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| Freescale Semiconductor Technical Data MPR03X Rev 2.0 11/2008 Product Preview Proximity Capacitive Touch Sensor Controller MPR03X OVERVIEW The MPR03X is an Inter-Integrated Circuit Communication driven Capacitive Touch Sensor Controller, optimized to manage two electrodes with interrupt functionality, or three electrodes with the interrupt disabled. It can accommodate a wide range of implementations due to increased sensitivity and a specialized feature set. Features * * * * * * * * * * * * * * * * * * 8 A supply current with two electrodes being monitored with 64 ms response time and IRQ enabled Compact 2 x 2 x 0.65 mm 8-lead DFN package Supports up to 3 touch pads Only one external component needed Intelligent touch detection capacity 4 A maximum shutdown current 1.71 V to 2.75 V operation Threshold based detection with hysteresis I2C interface, with optional IRQ Multiple devices in a system allow for up to 6 electrodes (need MPR032 with second I2C address) -40C to +85C operating temperature range Switch Replacements Touch Pads PC Peripherals MP3 Players Remote Controls Mobile Phones Lighting Controls (I2C) MPR031 MPR032 Capacitive Touch Sensor Controller Bottom View 8-PIN UDFN CASE 1944 Top View SCL SDA VSS VDD 1 2 3 4 8 IRQ/ELE2 ELE1 ELE0 REXT MPR03X 7 6 5 Implementations Figure 1. Pin Connections VDD Typical Applications IC Serial Interface INT REXT 75k SCL SDA ELE0 1 MPR03X ELE1 2 VSS VSS MPR03X with 2 Electrodes and 2 Pads ORDERING INFORMATION Device Name MPR031EP MPR031EPR2 MPR032EP MPR032EPR2 Temperature Range -40C to +85C -40C to +85C -40C to +85C -40C to +85C Case Number 1944 (8-Pin UDFN) 1944 (8-Pin UDFN) 1944 (8-Pin UDFN) 1944 (8-Pin UDFN) Touch Pads 3-pads 3-pads 3-pads 3-pads I2C Address 0x4A 0x4A 0x4B 0x4B Shipping Bulk Tape and Reel Bulk Tape and Reel This document contains a product under development. Freescale Semiconductor reserves the right to change or discontinue this product without notice. (c) Freescale Semiconductor, Inc., 2008. All rights reserved. Preliminary 1 1.1 Device Overview Introduction MPR03X is a small outline, low profile, low voltage touch sensor controller in a 2 mm x 2 mm DFN which manages up to three touch pad electrodes. An I2C interface communicates with the host controller at data rates up to 400 kbits/sec. An optional interrupt output advises the host of electrode status changes. The interrupt output is a multiplexed with the third electrode output, so using the interrupt output reduces the number of electrode inputs to two. The MPR03X includes three levels of input signal filtering to detect pad input condition changes due to touch without any processing by the application. 1.2 Internal Block Diagram SDA SCL SDA IC SCL Interface Traffic Debounce Interval Debounce Debounce Count and Sample Sample Interval Counters Sample Count Number of Electrodes 32 kHz Oscillator Shutdown 8 MHz Oscillator Shutdown 8MHz User Registers CLR Interrupt Controller IRQ IRQ SET 32 kHz8 MHz ADC Controller Shutdown Start Conversion Set Input Channel Set Grounded Electrodes Set Source Current Un-Touched Baseline Filter Debounced Results Magnitude Comparator Average Filtered Debounce Result Debounce Filter Registers 4 x Max Registers 4 x Sum Registers 4 x Min Registers Sample Filter Registers Max Register Sum Register Min Register Average Filtered Sample Result ADC Result Mirror REXT 0V 012 ELE0 ELE1 ELE2 Current SourceMultiplexor Select Chan Iset 3 Set Source Current 2 0 1 2 Select Chan Input Source Multiplexor 2 Set Input Channel Enable Convert 10 Bit ADC Clock Data 10 Shutdown Start Conversion 8MHz ADC Result Iref Sel 4 Set Grounded Electrodes Figure 2. Functional Block Diagram MPR03X Preliminary 2 Sensors Freescale Semiconductor 2 2.1 External Signal Description Device Pin Assignment Table 1 shows the pin assignment for the MPR03X. For a more detailed description of the functionality of each pin, refer to the appropriate chapter. Table 1. Device Pin Assignment Pin 1 2 3 4 5 6 7 8 Name SCL SDA VSS VDD REXT ELE0 ELE1 IRQ/ELE2 I C Serial Clock Input I2C Serial Data I/O Ground Positive Supply Voltage Reference Resistor Connect a 75 k 1% resistor from REXT to VSS Electrode 0 Electrode 1 Interrupt Output or Touch Electrode Input 2 IRQ is the active-low open-drain interrupt output 2 Function The package available for the MPR03X is a 2 x 2 mm 8 pin UDFN. The package and pinout is shown in Figure 3. SCL SDA VSS VDD 1 2 3 4 8 IRQ/ELE2 ELE1 ELE0 REXT MPR03X 7 6 5 Figure 3. Package Pinouts 2.2 Recommended System Connections The MPR03X Capacitive Touch Sensor Controller requires one external passive component. As shown in Table 1, the REXT line should have a 75 k connected from the pin to GND. This resistor needs to be 1% tolerance. In addition to the one resistor, a bypass capacitor of 10F should always be used between the VDD and VSS lines and a 4.7 k pull-up resistor should be included on the IRQ. The remaining three connections are SCL, SDA, IRQ. Depending on the specific application, each of these control lines can be used by connecting them to a host controller. In the most minimal system, the SCL and SDA must be connected to a master I2C interface to communicate with the MPR03X. All of the connections for the MPR03X are shown by the schematic in Figure 4. VDD IC Serial Interface SCL SDA REXT ELE0 1 MPR03X ELE1 2 75k IRQ/ELE2 3 VSS VSS Figure 4. Recommended System Connections Schematic MPR03X Sensors Freescale Semiconductor Preliminary 3 2.3 Serial Interface The MPR03X uses an I2C Serial Interface. The I2C protocol implementation and the specifics of communicating with the Touch Sensor Controller are detailed in the following sections. 2.3.1 Serial-Addressing The MPR03X operates as a slave that sends and receives data through an I2C 2-wire interface. The interface uses a Serial Data Line (SDA) and a Serial Clock Line (SCL) to achieve bi-directional communication between master(s) and slave(s). A master (typically a microcontroller) initiates all data transfers to and from the MPR03X, and it generates the SCL clock that synchronizes the data transfer. The MPR03X SDA line operates as both an input and an open-drain output. A pull-up resistor, typically 4.7k, is required on SDA. The MPR03X SCL line operates only as an input. A pull-up resistor, typically 4.7k, is required on SCL if there are multiple masters on the 2-wire interface, or if the master in a single-master system has an open-drain SCL output. Each transmission consists of a START condition (Figure 5) sent by a master, followed by the MPR03X's 7-bit slave address plus R/W bit, a register address byte, one or more data bytes, and finally a STOP condition. SDA tSU DAT tLOW tHIGH tR tF REPEAT ED ST ART CONDIT ION tHD DAT tSU STA tHD STA tSU STO tBUF SCL tHD STA ST ART CONDIT ION ST OP CONDIT ION ST ART CONDIT ION Figure 5. Wire Serial Interface Timing Details 2.3.2 Start and Stop Conditions Both SCL and SDA remain high when the interface is not busy. A master signals the beginning of a transmission with a START (S) condition by transitioning SDA from high to low while SCL is high. When the master has finished communicating with the slave, it issues a STOP (P) condition by transitioning SDA from low to high while SCL is high. The bus is then free for another transmission. SDA SCL DATA LINE STABLE DATA VALID CHANGE OF DATA ALLOWED Figure 6. Start and Stop Conditions 2.3.3 Bit Transfer One data bit is transferred during each clock pulse (Figure 7). The data on SDA must remain stable while SCL is high. MPR03X Preliminary 4 Sensors Freescale Semiconductor SDA SCL S START CONDITION Figure 7. Bit Transfer P STOP CONDITION 2.3.4 Acknowledge The acknowledge bit is a clocked 9th bit (Figure 8) which the recipient uses to handshake receipt of each byte of data. Thus each byte transferred effectively requires 9 bits. The master generates the 9th clock pulse, and the recipient pulls down SDA during the acknowledge clock pulse, such that the SDA line is stable low during the high period of the clock pulse. When the master is transmitting to the MPR03X, the MPR03X generates the acknowledge bit, since the MPR03X is the recipient. When the MPR03X is transmitting to the master, the master generates the acknowledge bit, since the master is the recipient. START CONDITION SCL SDA SDA CLOCK PULSE FOR ACKNOWLEDGEMENT 1 2 8 9 BY TRANSMITTER S Figure 8. Acknowledge BY RECEIVER 2.3.5 The Slave Address The MPR03X has a 7-bit long slave address (Figure 9). The bit following the 7-bit slave address (bit eight) is the R/W bit, which is low for a write command and high for a read command. SDA SCL 1 MSB 0 0 1 0 1 0 R/W ACK Figure 9. Slave Address The MPR03X monitors the bus continuously, waiting for a START condition followed by its slave address. When a MPR03X recognizes its slave address, it acknowledges and is then ready for continued communication. The MPR031 and MPR032 slave addresses are show in Table 2. Table 2. Part Number MPR031 MPR032 I2C Address 0x4A 0x4B MPR03X Sensors Freescale Semiconductor Preliminary 5 2.3.6 Message Format for Writing the MPR03X A write to the MPR03X comprises the transmission of the MPR03X's keyscan slave address with the R/W bit set to 0, followed by at least one byte of information. The first byte of information is the command byte. The command byte determines which register of the MPR03X is to be written by the next byte, if received. If a STOP condition is detected after the command byte is received, the MPR03X takes no further action (Figure 10) beyond storing the command byte. Any bytes received after the command byte are data bytes. Command byte is stored on receipt ofSTOP condition acknowledge from MPR03X D15 D14 D13 D12 D11 D10 D9 D8 S SLAVE ADDRESS R/W 0 A COMMAND BYTE acknowledge from MPR3X A P Figure 10. Command Byte Received Any bytes received after the command byte are data bytes. The first data byte goes into the internal register of the MPR03X selected by the command byte (Figure 11). acknowledge from MPR03X D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 acknowledge from MPR03X D3 D2 D1 D0 How command byte and data byte map into MPR03X's registers acknowledge from MPR03X S SLAVE ADDRESS R/W 0 A COMMAND BYTE A DATA BYTE 1 byte A P auto-increment memory word address Figure 11. Command and Single Data Byte Received If multiple data bytes are transmitted before a STOP condition is detected, these bytes are generally stored in subsequent MPR03X internal registers because the command byte address generally auto-increments (Section 2.4). 2.3.7 Message Format for Reading the MPR03X MPR03X is read using MPR03X's internally stored register address as address pointer, the same way the stored register address is used as address pointer for a write. The pointer generally auto-increments after each data byte is read using the same rules as for a write (Table 5). Thus, a read is initiated by first configuring MPR03X's register address by performing a write (Figure 10) followed by a repeated start. The master can now read 'n' consecutive bytes from MPR03X, with first data byte being read from the register addressed by the initialized register address. acknowledge from master D7 D6 D5 D4 D3 D2 D1 D0 acknowledge from MPR03X S SLAVE ADDRESS 1 A DATA BYTE A P R/W n bytes auto-increment memory word address Figure 12. Reading MPR03X MPR03X Preliminary 6 Sensors Freescale Semiconductor 2.3.8 Operation with Multiple Master The application should use repeated starts to address the MPR03X to avoid bus confusion between I2C masters.On a I2C bus, once a master issues a start/repeated start condition, that master owns the bus until a stop condition occurs. If a master that does not own the bus attempts to take control of that bus, then improper addressing may occur. An address may always be rewritten to fix this problem. Follow I2C protocol for multiple master configurations. 2.4 Register Address Map Table 3. Register Address Map Burst Mode Auto-Increment Address Register Register Address Touch Status Register ELE0 Filtered Data Low Register ELE0 Filtered Data High Register ELE1 Filtered Data Low Register ELE1 Filtered Data High Register ELE2 Filtered Data Low Register ELE2 Filtered Data High Register ELE0 Baseline Value Register ELE1 Baseline Value Register ELE2 Baseline Value Register Max Half Delta Register Noise Half Delta Register Noise Count Limit Register ELE0 Touch Threshold Register ELE0 Release Threshold Register ELE1 Touch Threshold Register ELE1 Release Threshold Register ELE2 Touch Threshold Register ELE2 Release Threshold Register AFE Configuration Register Filter Configuration Register Electrode Configuration Register 0x00 0x02 0x03 0x04 0x05 0x06 0x07 0x1A 0x1B 0x1C 0x26 0x27 0x28 0x29 0x2A 0x2B 0x2C 0x2D 0x2E 0x41 0x43 0x44 0x00 Register Address + 1 MPR03X Sensors Freescale Semiconductor Preliminary 7 3 3.1 Functional Overview Introduction The MPR03X has an analog front, a digital filter, and a touch recognition system. This data interpretation can be done many different ways but the method used in the MPR03X is explained in this chapter. 3.2 Understanding the Basics MPR03X is a touch pad controller which manages two or three touch pad electrodes. An IC interface communicates with the host, and an optional interrupt output advises the host of electrode status changes. The interrupt output is a multiplexed function with the third electrode input, so using the interrupt output reduces the number of electrode inputs to two. The primary application for MPR03X is the management of user interface touch pads. Monitoring touch pads involves detecting small changes of pad capacitance. MPR03X incorporates a self calibration function which continually adjusts the baseline capacitance for each individual electrode. Therefore, the host only has to configure the delta thresholds to interpret a touch or release. MPR03X uses a state machine to operate a capacitive measurement engine to analyze the electrodes and determine whether a pad has been touched or released. Between measurements the MPR03X draws negligible current. The application controls MPR03X's configuration, making trade-offs between noise rejection, touch response time, and power consumption. 3.3 Implementation The touch sensor system can be tailored to specific applications by varying the following: a capacitance detector, a raw data low pass filter, a baseline management system, and a touch detection system. In the following sections, the functionality and configuration of each block will be described. Electrodes can be connected to the MPR03X in two different configurations, one with an IRQ and one without (Figure 13). VDD VDD 1 IC Serial Interface INT SCL SDA ELE0 1 IC Serial Interface SCL SDA ELE0 MPR03X REXT 75k VSS VSS VSS ELE1 2 75k REXT MPR03X ELE1 2 ELE2 3 VSS MPR03X with 2 Electrodes and 2 Pads MPR03X with 3 Electrodes and 3 Pads Figure 13. MPR03X Pad and Interrupt Connection Options MPR03X Preliminary 8 Sensors Freescale Semiconductor 4 4.1 Modes of Operation Introduction MPR03X's operation modes are Stop, Run1, and Run2. Stop mode is the start-up and configuration mode. 4.2 Stop Mode In Stop mode, the MPR03X does not monitor any of the electrodes. This mode is the lowest power state. 4.2.1 Initial Power Up On power-up, the device is in Stop mode, registers are reset to the initial values shown in Table 4, and MPR03X starts in Stop mode drawing minimal supply current. The user configurable pin IRQ/ELE2 defaults to being the interrupt output IRQ function. IRQ is reset on power-up, and so defaults to logic high. Since the IRQ is an open-drain output, IRQ will be high impedance. Table 4. Power-Up Register Configurations Register Touch Status Register ELE0 Filtered Data Low Register ELE0 Filtered Data High Register ELE1 Filtered Data Low Register ELE1 Filtered Data High Register ELE2 Filtered Data Low Register ELE2 Filtered Data High Register ELE0 Baseline Value Register ELE1 Baseline Value Register ELE2 Baseline Value Register Max Half Delta Register Noise Half Delta Register Noise Count Limit Register ELE0 Touch Threshold Register ELE0 Release Threshold Register ELE1 Touch Threshold Register ELE1 Release Threshold Register ELE2 Touch Threshold Register ELE2 Release Threshold Register AFE Configuration Register Filter Configuration Register Electrode Configuration Register Cleared Cleared Cleared Cleared Cleared Cleared Cleared Cleared Cleared Cleared Max Half Delta set to 1 Noise Half Delta Amount set to 1 Noise Count Limit set to 1 Threshold set to 1 Threshold set to 1 Threshold set to 1 Threshold set to 1 Threshold set to 1 Threshold set to 1 6 AFE samples, 16A charge current 6 touch detection samples, 16ms detection sample interval Stop mode. ELE2/IRQ pin is interrupt function, Power-Up Condition Register Address 0x00 0x02 0x03 0x04 0x05 0x06 0x07 0x1A 0x1B 0x1C 0x26 0x27 0x28 0x29 0x2A 0x2B 0x2C 0x2D 0x2E 0x41 0x43 0x44 HEX Value 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x08 0x04 0x00 4.2.2 Stop Mode Usage In order to set the configuration registers, the device must be in stop mode. This is achieved by setting the EleEn field in the Electrode Configuration register to zero. MPR03X Sensors Freescale Semiconductor Preliminary 9 4.3 Run1 Mode In Run1 Mode, the MPR03X monitors 1, 2, or 3 electrodes which are connected to a user defined array of touch pads. When only 1 or 2 electrodes are selected, the IRQ/ELE2 pin is automatically configured as an open drain interrupt output. When 3 electrodes are selected in Run1 Mode, the IRQ/ELE2 pin becomes the third electrode input, ELE2 (Figure 14). Run1 Mode with 3 Electrodes 1 2 3 ELE0 ELE1 ELE2 Capacitance Measurement Engine Filters and Touch Detection 1 2 ELE0 ELE1 INT Run1 Mode with 2 Electrodes Capacitance Measurement Engine Interrupt Filters and Touch Detection Run1 Mode with 1 Electrode 1 ELE0 Capacitance Measurement Engine Interrupt INT Filters and Touch Detection Figure 14. Electrode/Pad Connections in Run Mode 4.4 Run2 Mode In Run2 Mode, all enabled electrodes act as a single electrode by internally connecting the electrode pins together. The entire surface of all the touch pads is used as a single pad, increasing the total area of the conductor. When 2 electrodes are selected in Run2 Mode, the IRQ/ELE2 pin is automatically configured as an open drain interrupt output. When 3 electrodes are selected, the IRQ/ELE2 pin becomes the third electrode input, ELE2 (Figure 15). Run2 Mode to 3 Pads 1 2 3 ELE0 ELE1 ELE2 Capacitance Measurement Engine Filters and Touch Detection ELE0 ELE1 INT Run2 Mode to 2 Pads 1 2 Capacitance Measurement Engine Interrupt Filters and Touch Detection Figure 15. Electrode/Pad Connections in Area Detection Mode 4.5 Electrode Configuration Register The Electrode Configuration Register manages the configuration of the Electrode outputs in addition to the mode of the part. The address of the Electrode Configuration Register is 0x44. 7 R W Reset: 0 0 6 CalLock 0 5 4 3 2 EleEn 1 0 ModeSel 0 0 0 0 0 0 = Unimplemented Figure 16. Electrode Configuration Register MPR03X Preliminary 10 Sensors Freescale Semiconductor Table 5. Electrode Configuration Register Field Descriptions Field 6 CalLock Description Calibration Lock - The Calibration Lock bit selects whether calibration is enabled or disabled. 0 Enabled - In this state baseline calibration is enabled. 1 Disabled - In this state baseline calibration is disabled. Mode Select - The Mode Select field selects which Run Mode the sensor will operate in. This register is ignored when in Stop Mode. 00 Encoding 0 - Run1 Mode is enabled. 01 Encoding 1 - Run2 Mode is enabled. 10 Encoding 2 - Run2 Mode is enabled. 11 Encoding 3 - Run2 Mode is enabled. Electrode Enable - The Electrode Enable Field selects the electrode and IRQ functionality. 0000 Encoding 0 - Stop Mode 0001 Encoding 1 - Run Mode with ELE0 is enabled, ELE1 is disabled, IRQ is enabled. 0010 Encoding 2 - Run Mode with ELE0 is enabled, ELE1 is enabled, IRQ is enabled. 0011 Encoding 3 - Run Mode with ELE0 is enabled, ELE1 is enabled, ELE2 is enabled. ~ 1111 Encoding 15 - Run Mode with ELE0 is enabled, ELE1 is enabled, ELE2 is enabled. 5:4 ModeSel 3:0 EleEn MPR03X Sensors Freescale Semiconductor Preliminary 11 5 5.1 Output Mechanisms Introduction The MPR03X has three outputs: the touch status, values from the second level filter (Section 8.3), and the calibrated baseline values. The application can either use the touch status or a combination of second level filter data with the baseline data to determine when a touch occurs. 5.2 Touch Status Each Electrode has an associated single bit that denotes whether or not the pad is currently touched. This output is generated using the touch threshold and release threshold registers to determine when a pad is considered touched or untouched. Configuration of this system is discussed in Section 9. 5.2.1 Touch Status Register The Touch Pad Status Register is a read only register for determining the current status of the touch pad. The I2C slave address of the Touch Pad Status Register is 0x02. 7 R W Reset: OCF 0 6 0 0 5 0 0 4 0 0 3 0 0 2 E2S 0 1 E1S 0 0 E0S 0 = Unimplemented Figure 17. Touch Status Register Table 6. Touch Pad Status Register Field Descriptions Field 7 OCF Description Over Current Flag - The Over Current Flag shows when too much current is on the REXT pin. If it is set all other status flags and registers are cleared and the device is set to Stop mode. When OCF is set, the MPR03X cannot be put back into a Run mode. 0 - Current is within limits. 1 - Current is above limits. Writing a 1 to this field will clear the OCF. Electrode 2 Status - The Electrode 2 Status bit shows touched or not touched. 0 - Not Touched 1 - Touched Electrode 1 Status - The Electrode 1 Status bit shows touched or not touched. 0 - Not Touched 1 - Touched Electrode 0 Status - The Electrode 0 Status bit shows touched or not touched. 0 - Not Touched 1 - Touched 2 E2S 1 E1S 0 E0S MPR03X Preliminary 12 Sensors Freescale Semiconductor 5.3 Filtered Data Each electrode has an associated filtered output. This output is generated through register settings and a low pass filter implementation (Section 8.4). 5.3.1 Filtered Data Low Register The Filtered Data Low register contains the data on each of the electrodes. It is paired with the Filtered Data High register for reading the 10 bit A/D value. The address of the ELE0 Filtered Data Low register is 0x02. The address of the ELE1 Filtered Data Low register is 0x04. The address of the ELE2 Filtered Data Low register is 0x06. 7 R W Reset: 0 6 5 4 FDLB 3 2 1 0 0 0 0 0 0 0 0 = Unimplemented Figure 18. Filtered Data Low Register Table 7. Filtered Data Low Register Field Descriptions Field 7:0 FDLB Description Filtered Data Low Byte - The Filtered Data Low Byte displays the lower 8 bits of the 10 bit filtered A/D reading. 00000000 Encoding 0 ~ 11111111 Encoding 255 5.3.2 Filtered Data High Register The Filtered Data High register contains the data on each of the electrodes. It is paired with the Filtered Data Low register for reading the 10 bit A/D value. The address of the ELE0 Filtered Data High register is 0x03. The address of the ELE1 Filtered Data High register is 0x05. The address of the ELE2 Filtered Data High register is 0x07. 7 R W Reset: 0 0 6 0 0 5 0 0 4 0 0 3 0 0 2 0 0 1 FDHB 0 0 0 = Unimplemented Figure 19. Filtered Data High Register Table 8. Filtered Data High Register Field Descriptions Field 7:0 FDHB Description Filtered Data High Bits - The Filtered Data High Bits displays the higher 2 bits of the 10 bit filtered A/D reading. 00 Encoding 0 ~ 11 Encoding 3 MPR03X Sensors Freescale Semiconductor Preliminary 13 5.4 Baseline Values In addition to the second level filter data, the data from the baseline filter (or third level filter) is also displayed. In this case, the least two significant bits are removed before the 10-bit value is displayed in the register. 5.4.1 Baseline Value Register The Baseline Value register contains the third level filtered data on each of the electrodes. It is a truncated 10 bit A/D value displayed in the 8 bit register. The address of the ELE0 Baseline Value register is 0x1A. The address of the ELE1 Baseline Value register is 0x1B. The address of the ELE2 Baseline Value register is 0x1C. 7 R W Reset: 0 6 5 4 BV 3 2 1 0 0 0 0 0 0 0 0 = Unimplemented Figure 20. Filtered Data High Register Table 9. Filtered Data High Register Field Descriptions Field 7:0 BV Description Baseline Value - The Baseline Value byte displays the higher 8 bits of the 10 bit baseline value. 00000000 Encoding 0 - The 10 bit baseline value is between 0 and 3. ~ 11111111 Encoding 255 - The 10 bit baseline value is between 1020 and 1023. MPR03X Preliminary 14 Sensors Freescale Semiconductor 6 6.1 Interrupts Introduction The MPR03X has one interrupt output that is triggered on any touch related event. The interrupts trigger on both the up or down motion of a finger as defined by a set of configurable thresholds. 6.2 Triggering an Interrupt An interrupt is asserted any time data changes in the Touch Status Register (Section 5.2). This means that if an electrode touch or release occurs, an interrupt will alert the application of the change. 6.3 Interrupt Handling The MPR03X has one interrupt output that is asserted on any touch related event. The interrupts trigger on both the up or down motion of a finger as defined by a set of configurable thresholds as described in Section 9. To service an interrupt, the application must read the Touch Status Register (Section 5.2) and determine the current condition of the system. As soon as an I2C read takes place the MPR03X will release the interrupt. 6.4 IRQ Pin The IRQ pin is an open-drain latching interrupt output which requires an external pull-up resistor. The pin will latch down based on the conditions in Section 6.2. The pin will de-assert when an I2C transaction reads from the MPR03X. MPR03X Sensors Freescale Semiconductor Preliminary 15 7 7.1 Theory of Operation Introduction The MPR03X utilizes the principle that a capacitor holds a fixed amount of charge at a specific electric potential. Both the implementation and the configuration will be described in this section. 7.2 Capacitance Measurement The basic measurement technique used by the MPR03X is to charge up the capacitor C on one electrode input with a DC current I for a time T (the charge time). Before measurement, the electrode input is grounded, so the electrode voltage starts from 0 V and charges up with a slope, Equation 1, where C is the pad capacitance on the electrode (Figure 21). All of the other electrodes are grounded during this measurement. At the end of time T, the electrode voltage is measured with a 10 bit ADC. The voltage is inversely proportional to capacitance according to Equation 2.The electrode is then discharged back to ground at the same rate it was charged. dV I = dt C V= I xT C Electrode voltage measured here Equation 1 Equation 2 Electrode Voltage V Electrode Charging Electrode Discharging Electrode Charge Time T Electrode Discharge Time 2T Figure 21. MPR03X Electrode Measurement Charging Pad Capacitance When measuring capacitance there are some inherent restrictions due to the methodology used. On the MPR03X the voltage after charging must be in the range that is shown in Figure 22. 900 800 700 600 ADC Counts ADCmid 500 400 300 200 100 0 1.71 ADClow Valid ADC Values vs. V DD ADChigh 1.91 2.11 V DD (V) 2.31 2.51 2.71 Figure 22. MPR03X Preliminary 16 Sensors Freescale Semiconductor The valid operating range of the electrode charging source is 0.7V to (VDD-.7)V. This means that for a given VDD the valid ADC (voltage visible to the digital interface) range is given by ADC low = .7 (1024) V DD and , Equation 3 ADC high = (VDD - .7 ) (1024) VDD . Equation 4 These equations are represented in the graph. In the nominal case of VDD = 1.8V the ADC range is shown below in Table 10. Table 10. VDD 1.8 ADChigh 625.7778 ADClow 398.2222 ADCmid 512 Any ADC counts outside of the range shown are invalid and settings must be adjusted to be within this range. If capacitance variation is of importance for an application after the current output, charge time and supply voltage are determined then the following equations can be used. The valid range for capacitance is calculated by using the minimum and maximum ADC values in the capacitance equation. Substituting the low and high ADC equations into the capacitance equation yields the equations for the minimum and maximum capacitance values which are Clow = 7.3 Sensitivity I x T and I xT . C high = VDD - .7 .7 Equation 5 The sensitivity of the MPR03X is relative to the capacitance range being measured. Given the ADC value, current and time settings capacitance can be calculated, C= I x T x 1024 . VDD x ADC Equation 6 For a given capacitance the sensitivity can be measured by taking the derivative of this equation. The result of this is the following equation, representing the change in capacitance per one ADC count, where the ADC in the equation represents the current value. dC I x T x 1024 =- dADC VDD x ADC 2 Equation 7 This relationship is shown in the following graph by taking the midpoints off all possible ranges by varying the current and time settings. The midpoint is assumed to be 512 for ADC and the nominal supply voltage of 1.8V is used. MPR03X Sensors Freescale Semiconductor Preliminary 17 Sensitivity vs. Midpoint Capacitance for VDD = 1.8 V 0 0 500 1000 1500 2000 2500 -0.5 -1 Sensitivity (pF/ADC Count) -1.5 -2 -2.5 -3 -3.5 -4 -4.5 -5 Midpoint Capacitance (pF) dC/dADC @cmid (pF/1 ADC Count) Figure 23. Smaller amounts of change indicate increased sensitivity for the capacitance sensor. Some sample values are shown in Table 11. Table 11. pF 10 100 Sensitivity (pF/ADC count) -0.01953 -0.19531 In the above cases, the capacitance is assumed to be in the middle of the range for specific settings. Within the capacitance range the equation is nonlinear, thus the sensitivity is best with the lowest capacitance. This graph shows the sensitivity derivative reading across the valid range of capacitances for a set I, T, and VDD. For simple small electrodes (that are approximately 21 pF) and a nominal 1.8V supply the following graph is representative of this effect. Sensitivity vs. Capacitance for VDD = 1.8 V and I =36 A and T = .5 S 0.1 0.09 0.08 Sensitivity (pF/ADC Count) 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 10 12 C/ADC Maximum Minimum 14 16 18 20 Capacitance 22 24 26 28 30 Figure 24. MPR03X Preliminary 18 Sensors Freescale Semiconductor 7.4 Configuration From the implementation above, there are two elements that can be configured to yield a wide range of capacitance readings ranging from 0.455 pF to 2874.39 pF. The two configurable components are the electrode charge current and the electrode charge time. The electrode charge current can be configured to equal a range of values between 1 A and 63 A. This value is set in the CDC in the AFE Configuration register (Section 7.4.1). The electrode charge time can be configured to equal a range of values between 500 ns and 32 S. This value is set in the CDT in the Filter Configuration Register (Section 8.3.1). 7.4.1 AFE Configuration Register The AFE (Analog Front End) Configuration Register is used to set both the Charge/Discharge Current and the number of samples taken in the lowest level filter. The address of the AFE Configuration Register is 0x41. 7 R W Reset: 0 FFI 6 5 4 3 CDC 2 1 0 0 0 0 0 0 0 0 = Unimplemented Figure 25. AFE Configuration Register Table 12. AFE Configuration Register Field Descriptions Field 7:6 FFI Description First Filter Iterations - The first filter iterations field selects the number of samples taken as input to the first level of filtering. 00 Encoding 0 - Sets samples taken to 6 01 Encoding 1 - Sets samples taken to 10 10 Encoding 2 - Sets samples taken to 18 11 Encoding 3 - Sets samples taken to 34 Charge Discharge Current - The Charge Discharge Current field selects the supply current to be used when charging and discharging an electrode. 000000 Encoding 0 - Disables Electrode Charging 000001 Encoding 1 - Sets the current to 1uA ~ 111111 Encoding 63 - Sets the current to 63uA 5:0 CDC MPR03X Sensors Freescale Semiconductor Preliminary 19 8 8.1 Filtering Introduction The MPR03X has three levels of filtering. The first and second level filters will allow the application to condition the signal for undesired input variation. The third level filter can be configured to reject touch stimulus and be used as a baseline for touch detection. Each level of filtering will be further described in this section. 8.2 First Level The first level filter is designed to filter high frequency noise by averaging samples taken over short periods of time. The number of samples can be configured to equal a set of values ranging from 6 to 34 samples. This value is set by the FFI in the AFE Configuration Register (Section 7.4.1). The timing of this filter is determined by the configuration of the electrode charge time in the Filter Configuration Register (Section 8.3.1). Note that the electrode charge time must be configured for the capacitance in the application. The resulting value will affect the period of the first level filter. 8.3 Second Level The second level filter is designed to filter low frequency noise and reject false touches due to inconsistent data. The number of samples can be configured to equal a set of values ranging from 4 to 18. This value is set by the SFI in the Filter Configuration Register (Section 8.3.1). The timing of this filter is determined by the configuration of ESI in the Filter Configuration Register (Section 8.3.1). Note that the ESI (Electrode Sample Interval) must be configured to accommodate the low power requirements of a system. Thus, the resulting value will affect the period of the second level filter. The raw data from the second level of filtering is output in the Filtered Data High and Filtered Data Low registers, as shown in Section 5.3. 8.3.1 Filter Configuration Register The Filter Configuration register is used to set. The address of the Electrode Configuration Register is 0x43. 7 R W Reset: 0 6 CDT 0 5 4 SFI 3 2 1 ESI 0 0 0 0 0 0 0 = Unimplemented Figure 26. Filter Configuration Register MPR03X Preliminary 20 Sensors Freescale Semiconductor Table 13. Filter Configuration Register Field Descriptions Field 7:5 CDT Description Charge Discharge Time - The Charge Discharge Time field selects the amount of time an electrode charges and discharges. 000 Encoding 0 - Invalid 001 Encoding 1 - Time is set to 0.5 s 010 Encoding 2 - Time is set to 1 s ~ 111 Encoding 7 - Time is set to 32 s. Second Filter Iterations - The Second Filter Iterations field selects the number of samples taken for the second level filter. 00 Encoding 0 - Number of samples is set to 4 01 Encoding 1 - Number of samples is set to 6 10 Encoding 2 - Number of samples is set to 10 11 Encoding 3 - Number of samples is set to 18 Electrode Sample Interval - The Electrode Sample Interval field selects the period between samples used for the second level of filtering. 000 Encoding 0 - Period set to 1 ms 001 Encoding 1 - Period set to 2 ms ~ 111 Encoding 7 - Period set to 128 ms 4:3 SFI 2:0 ESI 8.4 Third Level Filter The Third Level Filter is designed for varying implementations. It can be used as either an additional low pass filter for the electrode data or a baseline for touch detection. For it to function as a baseline filter, it must be used in conjunction with the touch detection system described in the next chapter. To use the filter as an additional layer for low pass filtering, the touch detection system must be disabled by setting all of the touch thresholds to zero (refer to Section 9.2). Although, in most cases the third level of filter will be used as a baseline filter. The primary difference between these implementations is this: if a touch is detected the baseline filter will hold its current value until the touch is released. The touch/release configuration will be described in Chapter 9. When a touch is not currently detected, the baseline filter will operate based on a few conditions. These are configured through a set of registers including the Max Half Delta Register, the Noise Half Delta Register, and the Noise Count Limit. 8.4.1 Max Half Delta Register The Max Half Delta register is used to set the Max Half Delta for the Third Level Filter. The address of the Max Half Delta Register is 0x26. 7 R W Reset: 0 0 6 0 0 5 4 3 MHD 2 1 0 0 0 0 0 0 0 = Unimplemented Figure 27. Max Half Delta Register Table 14. Max Half Delta Register Field Descriptions Field 5:0 MHD Description Max Half Delta - The Max Half Delta determines the largest magnitude of variation to pass through the third level filter. 000000 DO NOT USE THIS CODE 000001 Encoding 1 - Sets the Max Half Delta to 1 ~ 111111 Encoding 63 - Sets the Max Half Delta to 63 MPR03X Sensors Freescale Semiconductor Preliminary 21 8.4.2 Noise Half Delta Register The Noise Half Delta register is used to set the Noise Half Delta for the third level filter. The address of the Noise Half Delta Register is 0x27. 7 R W Reset: 0 0 6 0 0 5 4 3 NHD 2 1 0 0 0 0 0 0 0 = Unimplemented Figure 28. Noise Half Delta Register Table 15. Noise Half Delta Register Field Descriptions Field 5:0 NHD Description Noise Half Delta - The Noise Half Delta determines the incremental change when non-noise drift is detected. 000000 DO NOT USE THIS CODE 000001 Encoding 1 - Sets the Noise Half Delta to 1 ~ 111111 Encoding 63 - Sets the Noise Half Delta to 63 8.4.3 Noise Count Limit Register The Noise Count Limit register is used to set the Noise Count Limit for the Third Level Filter. The address of the Noise Half Delta Register is 0x28. 7 R W Reset: 0 0 6 0 0 5 0 0 4 0 0 3 2 NCL 1 0 0 0 0 0 = Unimplemented Figure 29. Noise Count Limit Register Table 16. Noise Count Limit Register Field Descriptions Field 3:0 NCL Description Noise Count Limit - The Noise Count Limit determines the number of samples consecutively greater than the Max Half Delta necessary before it can be determined that it is non-noise. 0000 Encoding 0 - Sets the Noise Count Limit to 1 (every time over Max Half Delta) 0001 Encoding 1 - Sets the Noise Count Limit to 2 consecutive samples over Max Half Delta ~ 1111 Encoding 15 - Sets the Noise Count Limit to 15 consecutive samples over Max Half Delta MPR03X Preliminary 22 Sensors Freescale Semiconductor 9 9.1 9.2 Touch Detection Introduction Thresholds The MPR03X uses a threshold based system to determine when touches occur. This section will describe that mechanism. When a touch pad is pressed, an increase in capacitance will be generated. The resulting effect will be a reduction in the ADC counts. When the difference between the second level filter value and the third level filter value is significant, the system will detect a touch. When a touch is detected, there are a couple of effects: the third level filter output becomes fixed (refer to Section 8.4), an interrupt is generated (refer to Section 6), and the touch status register (Section 5.2) is updated. The touch detection system is controlled using two threshold registers for each independent electrode. The Touch Threshold register represents the delta at which the system will trigger a touch. The Release Threshold represents the difference at which a release would be detected. In either case the system will respond by changing the previously mentioned items. 9.2.1 Touch Threshold Register The Touch Threshold Register is used to set the touch threshold for each of the electrodes. The address of the ELE0 Touch Threshold Register is 0x29. The address of the ELE1 Touch Threshold Register is 0x2A. The address of the ELE2 Touch Threshold Register is 0x2B. 7 R W Reset: 0 6 5 4 TTH 3 2 1 0 0 0 0 0 0 0 0 = Unimplemented Figure 30. Touch Threshold Register Table 17. Touch Threshold Register Field Descriptions Field 7:0 TTH Description Touch Threshold - The Touch Threshold Byte sets the trip point for detecting a touch. 00000000 Encoding 0 ~ 11111111 Encoding 255 9.2.2 Release Threshold Register The Release Threshold Register is used to set the release threshold for each of the electrodes. The address of the ELE0 Release Threshold Register is 0x2C. The address of the ELE1 Release Threshold Register is 0x2D. The address of the ELE2 Release Threshold Register is 0x2E. 7 R W Reset: 0 6 5 4 RTH 3 2 1 0 0 0 0 0 0 0 0 = Unimplemented Figure 31. Release Threshold Register Table 18. Release Threshold Register Field Descriptions Field 7:0 RTH Description Release Threshold - The Release Threshold Byte sets the trip point for detecting a touch. 00000000 Encoding 0 ~ 11111111 Encoding 255 MPR03X Sensors Freescale Semiconductor Preliminary 23 Appendix A Electrical Characteristics A.1 Introduction This section contains electrical and timing specifications. A.2 Absolute Maximum Ratings Absolute maximum ratings are stress ratings only, and functional operation at the maxima is not guaranteed. Stress beyond the limits specified in Table 19 may affect device reliability or cause permanent damage to the device. For functional operating conditions, refer to the remaining tables in this section. This device contains circuitry protecting against damage due to high static voltage or electrical fields; however, it is advised that normal precautions be taken to avoid application of any voltages higher than maximum-rated voltages to this high-impedance circuit. Table 19. Absolute Maximum Ratings - Voltage (with respect to VSS) Rating Supply Voltage Input Voltage SCL, SDA, IRQ Operating Temperature Range Storage Temperature Range Symbol VDD VIN TSG TSG Value -0.3 to +2.9 VSS - 0.3 to VDD + 0.3 -40 to +85 -40 to +125 Unit V V C C A.3 ESD and Latch-up Protection Characteristics Normal handling precautions should be used to avoid exposure to static discharge. Qualification tests are performed to ensure that these devices can withstand exposure to reasonable levels of static without suffering any permanent damage. During the device qualification ESD stresses were performed for the Human Body Model (HBM), the Machine Model (MM) and the Charge Device Model (CDM). A device is defined as a failure if after exposure to ESD pulses the device no longer meets the device specification. Complete DC parametric and functional testing is performed per the applicable device specification at room temperature followed by hot temperature, unless specified otherwise in the device specification. Table 20. ESD and Latch-up Test Conditions Rating Human Body Model (HBM) Machine Model (MM) Charge Device Model (CDM) Latch-up current at TA = 85C Symbol VESD VESD VESD ILATCH Value 4000 200 500 100 Unit V V V mA MPR03X Preliminary 24 Sensors Freescale Semiconductor A.4 DC Characteristics This section includes information about power supply requirements and I/O pin characteristics. Table 21. DC Characteristics (Temperature Range = -40C to 85C Ambient) (Typical Operating Circuit, VDD = 1.71 V to 2.75 V, TA = TMIN to TMAX, unless otherwise noted. Typical current values are at VDD = 1.8 V, TA = +25C.) Parameter Operating Supply Voltage Symbol VDD IDD IDD IDD IDD IDD IDD IDD IDD IDD IDD Conditions Min 1.71 Typ 1.8 43 22 14 8 6 5 4 4 1.25 1.5 -6 Max 2.75 57.5 32 19.4 13.3 10.1 8.6 7.8 7.5 1.5 4 +6 Units 1 V A A A A A A A A mA A % 2 2 2 2 2 2 2 2 Average Supply Current Average Supply Current Average Supply Current Average Supply Current Average Supply Current Average Supply Current Average Supply Current Average Supply Current Measurement Supply Current Idle Supply Current Electrode Charge Current Accuracy ELE_ Electrode Input Working Range ELE_ Input Leakage Current ELE_ Input Capacitance ELE_ Input High Voltage SDA, SCL Input Low Voltage SDA, SCL Input Leakage Current SDA, SCL Input Capacitance SDA, SCL Output Low Voltage SDA, IRQ Power On Reset Run1 Mode @ 1 ms sample period Run1 Mode @ 2 ms sample period Run1 Mode @ 4 ms sample period Run1 Mode @ 8 ms sample period Run1 Mode @ 16 ms sample period Run1 Mode @ 32 ms sample period Run1 Mode @ 64 ms sample period Run1 Mode @ 128 ms sample period Peak of measurement duty cycle Stop Mode Relative to nominal values programmed in Register 0x41 Electrode charge current accuracy within specification 2 1 1 0.7 0.025 0.7 x VDD VDD - 0.7 1 15 V A pF V V A pF V V V 1 1 2 2 2 2 2 1 2 2 IIH, IIL VIH VIL IIH, IIL 0.3 x VDD 0.025 1 7 VOL VTLH VTHL IOL = 6mA VDD rising VDD falling 1.08 0.88 1.35 1.15 0.5V 1.62 1.42 1. Parameters tested 100% at final test at room temperature; limits at -40C and +85C verified by characterization, not tested in production 2. Limits verified by characterization, not tested in production A.5 AC Characteristics Table 22. AC CHARACTERISTICS (Typical Operating Circuit, VDD = 1.71V to 2.75V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VDD = 1.8V, TA = +25C.) Parameter 8 MHz Internal Oscillator 32 kHz Internal Oscillator Symbol fH fL Conditions Min 7.44 20.8 Typ 8 32 Max 8.56 43.2 Units MHz kHz 1 1 1. Parameters tested 100% at final test at room temperature; limits at -40C and +70C verified by characterization, not tested in production 2. Limits verified by characterization, not tested in production. MPR03X Sensors Freescale Semiconductor Preliminary 25 A.6 I2C AC Characteristics This section includes information about I2C AC Characteristics. Table 23. I2C AC Characteristics (Typical Operating Circuit, VDD = 1.71 V to 2.75 V, TA = TMIN to TMAX, unless otherwise noted. Typical current values are at VDD = 1.8 V, TA = +25C.) Parameter Serial Clock Frequency Bus Free Time Between a STOP and a START Condition Hold Time, (Repeated) START Condition Repeated START Condition Setup Time STOP Condition Setup Time Data Hold Time Data Setup Time SCL Clock Low Period SCL Clock High Period Rise Time of Both SDA and SCL Signals, Receiving Fall Time of Both SDA and SCL Signals, Receiving Fall Time of SDA Transmitting Pulse Width of Spike Suppressed Capacitive Load for Each Bus Line Symbol fSCL tBUF tHD, STA tSU, STA tSU, STO tHD, DAT tSU, DAT tLOW tHIGH tR tF tF.TX tSP Cb Conditions Min Typ Max 400 Units kHz s s s s 1 2 1.3 0.6 0.6 0.6 0.9 100 1.3 0.7 20+0.1 Cb 20+0.1 Cb 20+0.1 Cb 25 400 300 300 250 2 2 2 2 2 2 2 2 s ns s s ns ns ns ns pF 2 2 2 2 MPR03X Preliminary 26 Sensors Freescale Semiconductor Appendix B Brief Register Descriptions REGISTER Touch Status Register ELE0 Filtered Data Low Register ELE0 Filtered Data High Register ELE1 Filtered Data Low Register ELE1 Filtered Data High Register ELE2 Filtered Data Low Register ELE2 Filtered Data High Register ELE0 Baseline Value Register ELE1 Baseline Value Register ELE2 Baseline Value Register Max Half Delta Register Noise Half Delta Register Noise Count Limit Register ELE0 Touch Threshold Register ELE0 Release Threshold Register ELE1 Touch Threshold Register ELE1 Release Threshold Register ELE2 Touch Threshold Register ELE2 Release Threshold Register AFE Configuration Register Filter Configuration Register Electrode Configuration Register Abrv TS E0FDL E0FDH E1FDL E1FDH E2FDL D2FDH E0BV E1BV E2BV MHD NHD NCL E0TTH E0RTH E1TTH E1RTH E2TTH E2RTH AFEC FC EC FFI CDT CalL ock OCF Fields E2S E1S E0S E0FDLB E0FDHB E1FDLB E1FDHB E2FDLB E2FDHB E0BV E1BV E2BV MHD NHD NCL E0TTH E0RTH E1TTH E1RTH E2TTH E2RTH CDC SFI ModeSel ESI EleEn REGISTER ADDRESS 0x00 0x02 0x03 0x04 0x05 0x06 0x07 0x1A 0x1B 0x1C 0x26 0x27 0x28 0x29 0x2A 0x2B 0x2C 0x2D 0x2E 0x41 0x43 0x44 Initial Value 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x08 0x04 0x00 MPR03X Sensors Freescale Semiconductor Preliminary 27 Appendix C Ordering Information C.1 Ordering Information This section contains ordering information for MPR03X devices. ORDERING INFORMATION Device Name MPR031EP MPR031EPR2 MPR032EP MPR032EPR2 Temperature Range -40C to +85C -40C to +85C -40C to +85C -40C to +85C Case Number 1944 (8-Pin UDFN) 1944 (8-Pin UDFN) 1944 (8-Pin UDFN) 1944 (8-Pin UDFN) Touch Pads 3-pads 3-pads 3-pads 3-pads I2C Address 0x4A 0x4A 0x4B 0x4B Shipping Bulk Tape and Reel Bulk Tape and Reel C.2 Device Numbering Scheme All Proximity Sensor Products have a similar numbering scheme. The below diagram explains what each part number in the family represents. M Status (M = Fully Qualified, P = Preproduction) Proximity Sensor Product Number of Electrodes (03 = 3 electrode device) PR EE X P Package Designator (Q = QFN, EJ = TSSOP, EP = DFN) Version MPR03X Preliminary 28 Sensors Freescale Semiconductor PACKAGE DIMENSIONS PAGE 1 OF 3 MPR03X Sensors Freescale Semiconductor Preliminary 29 PAGE 2 OF 3 MPR03X Preliminary 30 Sensors Freescale Semiconductor PAGE 3 OF 3 MPR03X Sensors Freescale Semiconductor Preliminary 31 How to Reach Us: Home Page: www.freescale.com Web Support: http://www.freescale.com/support USA/Europe or Locations Not Listed: Freescale Semiconductor, Inc. Technical Information Center, EL516 2100 East Elliot Road Tempe, Arizona 85284 1-800-521-6274 or +1-480-768-2130 www.freescale.com/support Europe, Middle East, and Africa: Freescale Halbleiter Deutschland GmbH Technical Information Center Schatzbogen 7 81829 Muenchen, Germany +44 1296 380 456 (English) +46 8 52200080 (English) +49 89 92103 559 (German) +33 1 69 35 48 48 (French) www.freescale.com/support Japan: Freescale Semiconductor Japan Ltd. Headquarters ARCO Tower 15F 1-8-1, Shimo-Meguro, Meguro-ku, Tokyo 153-0064 Japan 0120 191014 or +81 3 5437 9125 support.japan@freescale.com Asia/Pacific: Freescale Semiconductor China Ltd. Exchange Building 23F No. 118 Jianguo Road Chaoyang District Beijing 100022 China +86 010 5879 8000 support.asia@freescale.com For Literature Requests Only: Freescale Semiconductor Literature Distribution Center P.O. Box 5405 Denver, Colorado 80217 1-800-441-2447 or +1-303-675-2140 Fax: +1-303-675-2150 LDCForFreescaleSemiconductor@hibbertgroup.com Information in this document is provided solely to enable system and software implementers to use Freescale Semiconductor products. There are no express or implied copyright licenses granted hereunder to design or fabricate any integrated circuits or integrated circuits based on the information in this document. Freescale Semiconductor reserves the right to make changes without further notice to any products herein. Freescale Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Freescale Semiconductor assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. "Typical" parameters that may be provided in Freescale Semiconductor data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including "Typicals", must be validated for each customer application by customer's technical experts. Freescale Semiconductor does not convey any license under its patent rights nor the rights of others. Freescale Semiconductor products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Freescale Semiconductor product could create a situation where personal injury or death may occur. Should Buyer purchase or use Freescale Semiconductor products for any such unintended or unauthorized application, Buyer shall indemnify and hold Freescale Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Freescale Semiconductor was negligent regarding the design or manufacture of the part. FreescaleTM and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. (c) Freescale Semiconductor, Inc. 2008. All rights reserved. RoHS-compliant and/or Pb-free versions of Freescale products have the functionality and electrical characteristics of their non-RoHS-compliant and/or non-Pb-free counterparts. For further information, see http:/www.freescale.com or contact your Freescale sales representative. For information on Freescale's Environmental Products program, go to http://www.freescale.com/epp. MPR03X Rev. 2.0 11/2008 |
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