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| Features * Fast Read Access Time - 90 ns * Dual Voltage Range Operation * * * - Unregulated Battery Power Supply Range, 2.7V to 3.6V or Standard 5V 10% Supply Range Compatible with JEDEC Standard AT27C020 Low Power CMOS Operation - 20 A max. (less than 1 A typical) Standby for VCC = 3.6V - 29 mW max. Active at 5 MHz for VCC = 3.6V Wide Selection of JEDEC Standard Packages - 32-Lead PLCC - 32-Lead TSOP (8 x 20mm) - 32-Lead VSOP (8 x 14mm) - 42-Ball CBGA (8 x 8mm) High Reliability CMOS Technology - 2,000V ESD Protection - 200 mA Latchup Immunity RapidTM Programming Algorithm - 100 s/byte (typical) CMOS and TTL Compatible Inputs and Outputs - JEDEC Standard for LVTTL and LVBO Integrated Product Identification Code Commercial and Industrial Temperature Ranges AT27BV020 * * * * * Description The AT27BV020 is a high-performance, low-power, low-voltage 2,097,152-bit onetime programmable read only memory (OTP EPROM) organized as 256K by 8 bits. It requires only one supply in the range of 2.7 to 3.6V in normal read mode operation, making it ideal for fast, portable systems using either regulated or unregulated battery power. (continued) 2-Megabit (256K x 8) Unregulated Battery-VoltageTM High Speed OTP EPROM AT27BV020 Pin Configurations Pin Name A0 - A17 O0 - O7 CE OE PGM Function Address Outputs Chip Enable Output Enable Program Strobe PLCC, Top View A 1 CBGA Top View 2 3 4 5 6 7 GND O6 VCC VCC O2 B A17 O7 C A10 NC D A14 A13 A9 E A16 A11 PGM NC F A15 A12 A8 A7 NC NC O5 NC O3 O4 NC NC OE GND O0 O1 A6 A4 CE A0 A3 A1 A2 NC VPP A5 TSOP VSOP Top View , Type 1 0902A-A-10/97 1 Atmel's innovative design techniques provide fast speeds that rival 5V parts while keeping the low power consumption of a 3V supply. At V CC = 2.7V, any byte can be accessed in less than 90 ns. With a typical power dissipation of only 18 mW at 5 MHz and VCC = 3V, the AT27BV020 consumes less than one fifth the power of a standard 5V EPROM. Standby mode supply current is typically less than 1 A at 3V. The AT27BV020 simplifies system design and stretches battery lifetime even further by eliminating the need for power supply regulation The AT27BV020 is available in industry standard JEDEC approved one-time programmable (OTP) plastic PLCC, TSOP and VSOP packages, as well as a 42-ball, 1 mm pitch, plastic chip-scale Ball Grid Array package (CBGA). All devices feature two-line control (CE, OE) to give designers the flexibility to prevent bus contention. The AT27BV020 operating with VCC at 3.0V produces TTL level outputs that are compatible with standard TTL logic devices operating at VCC = 5.0V. At VCC = 2.7V, the part is compatible with JEDEC approved low voltage battery operation (LVBO) interface specifications. The device is also capable of standard 5-volt operation making it ideally suited for dual supply range systems or card products that are pluggable in both 3-volt and 5-volt hosts. Atmel's AT27BV020 has additional features to ensure high quality and efficient production use. The RapidTM Program- ming Algorithm reduces the time required to program the part and guarantees reliable programming. Programming time is typically only 100 s/byte. The Integrated Product Identification Code electronically identifies the device and manufacturer. This feature is used by industry standard programming equipment to select the proper programming algorithms and voltages. The AT27BV020 programs exactly the same way as a standard 5V AT27C020 and uses the same programming equipment. System Considerations Switching between active and standby conditions via the Chip Enable pin may produce transient voltage excursions. Unless accommodated by the system design, these transients may exceed data sheet limits, resulting in device non-conformance. At a minimum, a 0.1 F high frequency, low inherent inductance, ceramic capacitor should be utilized for each device. This capacitor should be connected between the V CC and Ground terminals of the device, as close to the device as possible. Additionally, to stabilize the supply voltage level on printed circuit boards with large EPROM arrays, a 4.7 F bulk electrolytic capacitor should be utilized, again connected between the VCC and Ground terminals. This capacitor should be positioned as close as possible to the point where the power supply is connected to the array. 2 AT27BV020 AT27BV020 Block Diagram Absolute Maximum Ratings* *NOTICE: Temperature Under Bias .................................. -40C to +85C Storage Temperature ..................................... -65C to +125C Voltage on Any Pin with Respect to Ground .........................................-2.0V to +7.0V(1) Voltage on A9 with Respect to Ground ......................................-2.0V to +14.0V(1) VPP Supply Voltage with Respect to Ground .......................................-2.0V to +14.0V(1) Note: Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Minimum voltage is -0.6V DC which may undershoot to 2.0V for pulses of less than 20 ns.Maximum output pin voltage is VCC + 0.75V DC which may be exceeded if certain precautions are observed (consult application notes) and which may overshoot to +7.0V for pulses of less than 20 ns. Operating Modes Mode / Pin Read(2) Output Disable Standby(2) Rapid Program PGM Verify(3) PGM Inhibit (3) (3) (2) CE VIL X VIH VIL VIL VIH (3)(5) OE VIL VIH X VIH VIL X VIL PGM X(1) X X VIL VIH X X Ai Ai X X Ai Ai X A9 = VH(4) A0 = VIH or VIL A1 - A17 = VIL VPP X X X VPP VPP VPP X VCC VCC(2) VCC (2) Outputs DOUT High Z High Z DIN DOUT High Z Identification Code VCC(2) VCC (3) VCC(3) VCC (3) Product Identification Notes: VIL VCC(3) 1. X Can be VIL or VIH. 2. Read, output disable, and standby modes require, 2.7V VCC 3.6V, or 4.5V VCC 5.5V. 3. Refer to Programming Characteristics. Programming modes requires VCC = 6.5V. 4. VH = 12.0 0.5V. 5. Two identifier bytes may be selected. All Ai inputs are held low (VIL), except A9 which is set to VH and A0 which is toggled low (VIL) to select the Manufacturer's Identification byte and high (VIH) to select the Device Code byte. 3 DC and AC Operating Conditions for Read Operation AT27BV020 -90 Com. Operating Temperature (Case) Ind. VCC Power Supply -40C - 85C 2.7V to 3.6V 5V 10% -40C - 85C 2.7V to 3.6V 5V 10% -40C - 85C 2.7V to 3.6V 5V 10% = Preliminary Information 0C - 70C -12 0C - 70C -15 0C - 70C DC and Operating Characteristics for Read Operation Symbol Parameter Condition Min Max Units VCC = 2.7V to 3.6V ILI ILO IPP1(2) ISB ICC VIL Input Load Current Output Leakage Current VPP (1) VIN = 0V to VCC VOUT = 0V to VCC VPP = VCC ISB1 (CMOS), CE = VCC 0.3V ISB2 (TTL), CE = 2.0 to VCC + 0.5V f = 5 MHz, IOUT = 0 mA, CE = VIL, VCC = 3.6V VCC = 3.0 to 3.6V VCC = 2.7 to 3.6V -0.6 -0.6 2.0 0.7 x VCC 1 5 10 20 100 8 0.8 0.2 x VCC VCC + 0.5 VCC + 0.5 0.4 0.2 0.1 2.4 VCC - 0.2 VCC - 0.1 A A A A A mA V V V V V V V V V V Read/Standby Current VCC(1) Standby Current VCC Active Current Input Low Voltage VIH Input High Voltage VCC = 3.0 to 3.6V VCC = 2.7 to 3.6V IOL = 2.0 mA VOL Output Low Voltage IOL = 100 A IOL = 20 A IOH = -2.0 mA VOH Output High Voltage IOH = -100 A IOH = -20 A VCC = 4.5V to 5.5V ILI ILO IPP1(2) ISB ICC VIL VIH VOL VOH Input Load Current Output Leakage Current VPP (1) VIN = 0V to VCC VOUT = 0V to VCC VPP = VCC ISB1 (CMOS), CE = VCC 0.3V ISB2 (TTL), CE = 2.0 to VCC + 0.5V f = 5 MHz, IOUT = 0 mA, CE = VIL -0.6 2.0 IOL = 2.1 mA IOH = -400 A 2.4 1 5 10 100 1 25 0.8 VCC + 0.5 0.4 A A A A mA mA V V V V Read/Standby Current Standby Current VCC (1) VCC Active Current Input Low Voltage Input High Voltage Output Low Voltage Output High Voltage Notes: 1. VCC must be applied simultaneously with or before VPP, and removed simultaneously with or after VPP. 2. VPP may be connected directly to VCC, expect during programming. The supply current would then be the sum of ICC and IPP. 4 AT27BV020 AT27BV020 AC Characteristics for Read Operation (VCC = 2.7V to 3.6V and 4.5V to 5.5V) AT27BV020 -90 Symbol tACC tCE (3) -12 Max 90 90 50 40 Min Max 120 120 50 40 0 0 Min -15 Max 150 150 60 50 Units ns ns ns ns ns Parameter Address to Output Delay CE to Output Delay OE to Output Delay OE or CE High to Output Float, whichever occurred first Output Hold from Address, CE or OE, whichever occurred first Condition CE = OE = VIL OE = VIL CE = VIL Min (2) (2)(3) tOE tDF(4)(5) tOH Note: 0 2,3,4,5. - see AC Waveforms for Read Operation = Preliminary Information AC Waveforms for Read Operation(1) Notes: 1. 2. 3. 4. 5. Timing measurement references are 0.8V and 2.0V. Input AC drive levels are 0.45V and 2.4V, unless otherwise specified. OE may be delayed up to tCE - tOE after the falling edge of CE without impact on tCE. OE may be delayed up to tACC - tOE after the address is valid without impact on tACC. This parameter is only sampled and is not 100% tested. Output float is defined as the point when data is no longer driven. 5 Input Test Waveform and Measurement Level Output Test Load tR, tF < 20 ns (10% to 90%) Note: CL = 100 pF including jig capacitance. Pin Capacitance(1) (f = 1 MHz, T = 25C) Typ CIN COUT Note: Max 8 12 Units pF pF Conditions VIN = 0V VOUT = 0V 4 8 Typical values for nominal supply voltage. This parameter is only sampled and is not 100% tested. 6 AT27BV020 AT27BV020 Programming Waveforms(1) Notes: 1. 2. 3. The Input Timing Reference is 0.8V for VIL and 2.0V for VIH. tOE and tDFP are characteristics of the device but must be accommodated by the programmer. When programming the AT27BV020 a 0.1 F capacitor is required across VPP and ground to suppress spurious voltage transients. DC Programming Characteristics TA = 25 5C, VCC = 6.5 0.25V, VPP = 13.0 0.25V Limits Symbol ILI VIL VIH VOL VOH ICC2 IPP2 VID Parameter Input Load Current Input Low Level Input High Level Output Low Voltage Output High Voltage VCC Supply Current (Program and Verify) VPP Supply Current A9 Product Identification Voltage CE = PGM = VIL 11.5 IOL = 2.1 mA IOH = -400 A 2.4 40 20 12.5 Test Conditions VIN = VIL,VIH -0.6 2.0 Min Max 10 0.8 VCC + 0.5 0.4 Units A V V V V mA mA V 7 AC Programming Characteristics TA = 25 5C, VCC = 6.5 0.25V, VPP = 13.0 0.25V Test Conditions(1) Symbol tAS tCES tOES tDS tAH tDH tDFP tVPS tVCS tPW tOE tPRT Notes: 1. 2. 3. Parameter Address Setup Time CE Setup Time OE Setup Time Data Setup Time Address Hold Time Data Hold Time OE High to Output Float Delay VPP Setup Time VCC Setup Time PGM Program Pulse Width Data Valid from OE VPP Pulse Rise Time During Programming 50 (2) (3) Limits AC Conditions of Test Min 2 2 Input Rise and Fall Times (10% to 90%) 20ns Input Pulse Levels 0.45V to 2.4V Input Timing Reference Level 0.8V to 2.0V Output Timing Reference Level 0.8V to 2.0V 2 2 0 2 0 2 2 95 105 150 130 Max Units s s s s s s ns s s s ns ns VCC must be applied simultaneously or before VPP and removed simultaneously or after VPP. This parameter is only sampled and is not 100% tested. Output Float is defined as the point where data is no longer driven --see timing diagram. Program Pulse width tolerance is 100 sec 5%. Atmel's 27BV020 Integrated Product Identification Code(1) Pins Codes Manufacturer Device Type Note: A0 0 1 O7 0 1 O6 0 0 O5 0 0 O4 1 0 O3 1 0 O2 1 1 O1 1 1 O0 0 0 Hex Data 1E 86 The AT27BV020 has the same Product Identification Code as the AT27C020. Both are programming compatible. 8 AT27BV020 AT27BV020 Rapid Programming Algorithm A 100 s PGM pulse width is used to program. The address is set to the first location. VCC is raised to 6.5V and VPP is raised to 13.0V. Each address is first programmed with one 100 s PGM pulse without verification. Then a verification/reprogramming loop is executed for each address. In the event a byte fails to pass verification, up to 10 successive 100 s pulses are applied with a verification after each pulse. If the byte fails to verify after 10 pulses have been applied, the part is considered failed. After the byte verifies properly, the next address is selected until all have been checked. VPP is then lowered to 5.0V and VCC to 5.0V. All bytes are read again and compared with the original data to determine if the device passes or fails. 9 Ordering Information ICC (mA) VCC = 3.6V tACC (ns) 90 Active 8 Standby 0.02 Ordering Code AT27BV020-90CC AT27BV020-90JC AT27BV020-90TC AT27BV020-90VC AT27BV020-90CI AT27BV020-90JI AT27BV020-90TI AT27BV020-90VI AT27BV020-12CC AT27BV020-12JC AT27BV020-12TC AT27BV020-12VC AT27BV020-12CI AT27BV020-12JI AT27BV020-12TI AT27BV020-12VI AT27BV020-15CC AT27BV020-15JC AT27BV020-15TC AT27BV020-15VC AT27BV020-15CI AT27BV020-15JI AT27BV020-15TI AT27BV020-15VI Package 42C 32J 32T 32V 42C 32J 32T 32V 42C 32J 32T 32V 42C 32J 32T 32V 42C 32J 32T 32V 42C 32J 32T 32V Operation Range Commercial (0C to 70C) 8 0.02 Industrial (-40C to 85C) 120 8 0.02 Commercial (0C to 70C) 8 0.02 Industrial (-40C to 85C) 150 8 0.02 Commercial (0C to 70C) 8 0.02 Industrial (-40C to 85C) = Preliminary Information Package Type 42C 32J 32T 32V 42-Ball, Plastic Chip-Scale Ball Grid Array (CBGA) (8 x 8mm) 32-Lead, Plastic J-Leaded Chip Carrier (PLCC) 32-Lead, Plastic Thin Small Outline Package (TSOP) (8 x 20mm) 32-Lead, Plastic Thin Small Outline Package (VSOP) (8 x 14mm) 10 AT27BV020 |
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