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NJU6060
Full Color LED Controller Driver with PWM Control
GENERAL DESCRIPTION
The NJU6060 is Full Color LEDs Controller Driver. It drives specifically RGB(Red, Green and Blue) color LEDs by 1 package and control the each color LED separately. The NJU6060 contains PWM (Pulse Width Modulation) luminance control, a LED driver, MPU interface circuit and so on. The PWM luminance control's output level are 32 steps to 1 LED. Therefore totally it control 32,768 kinds of color. NJU6060 is suitable for Cellular Phone, Car Audio and so on.
PACKAGE OUTLINE
NJU6060V
FEATURES
Controls the 3-color LED Separately (ILED=10mA x 3 outputs) Built-in PWM Luminance Control (32 steps x 3) Built-in 8bit serial Interface Circuit Built-in Oscillation Circuit Operating Voltage for Step-up Circuits : 2.4V to 5.5V Package : SSOP-10 CMOS Technology
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NJU6060
PIN CONNECTIONS (TOP VIEW)
LED3 LED2 LED1 OSC DATA
RSTb
PIN DESCRIPTIONS
No. 1 2 3 4 5 6 7 8 9 10 PIN NAME VDD RSTb CSb CLK DATA OSC VSS LED1 LED2 LED3 TYPE Power Input Input Input Input Input Power Output Output Output DESCRIPTIONS VDD Power Supply terminal Reset terminal - Active "L". Chip Select terminal The serial data is fixed on the rising edge of CSb clock. Shift Clock terminal Serial Data terminal Oscillating terminal External resistor connecting Ground terminal LED Connect terminals (Open drain output) Output level are 32 steps PWM by instruction control. Connecting cathode of LED.
CLK
CSb
VDD
VSS
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NJU6060
BLOCK DIAGRAM
VDD OSC OSC
32step PWM
VLED
Driver
LED1
VDD
C P U RSTb CSb CLK DATA VSS I / F
32step PWM
Driver
LED2
Instruction Decoder
32step PWM
Driver
LED3
FUNCTIONAL DESCRIPTIONS
(1) Description for each blocks (1-1) PWM Luminance Control The NJU6060 incorporates three channel of 32 steps PWM Luminance Control circuits. 32 steps of Luminance Control by setting up DUTY. The relation between a register and DUTY is shown below:
REGISTER 0,0,0,0,0 0,0,0,0,1 0,0,0,1,0 0,0,0,1,1 0,0,1,0,0 0,0,1,0,1 0,0,1,1,0 0,0,1,1,1 DUTY 1/32 2/32 3/32 4/32 5/32 6/32 7/32 8/32 REGISTER 0,1,0,0,0 0,1,0,0,1 0,1,0,1,0 0,1,0,1,1 0,1,1,0,0 0,1,1,0,1 0,1,1,1,0 0,1,1,1,1 DUTY 9/32 10/32 11/32 12/32 13/32 14/32 15/32 16/32 REGISTER 1,0,0,0,0 1,0,0,0,1 1,0,0,1,0 1,0,0,1,1 1,0,1,0,0 1,0,1,0,1 1,0,1,1,0 1,0,1,1,1 DUTY 17/32 18/32 19/32 20/32 21/32 22/32 23/32 24/32 REGISTER 1,1,0,0,0 1,1,0,0,1 1,1,0,1,0 1,1,0,1,1 1,1,1,0,0 1,1,1,0,1 1,1,1,1,0 1,1,1,1,1 DUTY 25/32 26/32 27/32 28/32 29/32 30/32 31/32 32/32
(1-2) Oscillator The NJU6060 Oscillation circuit is generated clock which generates PWM by connecting external resistor. The oscillation circuit with the external register generate the clock for PWM. The PWM frequency (fPWM) is finely adjusted by value of the external register. In addition, the ON/OFF of oscillation circuit is controlled by the instruction, and the current consumption is decreased when it was OFF of the oscillation circuit. If PWM was high when the oscillation circuit became OFF, the situation of PWM was kept. Input OFF command of the output port.
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NJU6060
(2) Instructions 3 line type serial interface using a setup of PWM data, ON/OFF of Light Emitting Diode, etc. are made. The input data and latched at rising edge of chip shift clock (CLK) and the 8-bit data are fetched into the NJU6060 at the rising edge of chip select (CS). The data to input is MSB first. Table.1 shows the instruction codes of the NJU6060. Table 1. Instruction Code Code D4 D3 D2 D1 D D D D D D D D D D D D
Instruction LED1 PWM Data Set LED2 PWM Data Set LED3 PWM Data Set
PWM Frequency set / OSC ON/OFF /Output port ON/OFF
D7 0 0 0
D6 0 0 1
D5 0 1 0
D0 D D D
Discription 5-bit PWM data is set. 5-bit PWM data is set. 5-bit PWM data is set. 0:(fosc/2)/32 1:(fosc/2)/64 OSC 0:OFF 1:ON LED1 to 3 0:OFF 1:ON 0,0: Same phase 0,1: 4-step shift 1,0: 8-step shift 1,1: 16-step shift Inhibited command * : Don't Care fPWM
0
1
1
fPWM
OSC
LED1
LED2
LED3
LED1 PWM Phase set LED2 PWM Phase set LED3 PWM Phase set Test
1 1 1 1
0 0 1 1
0 1 0 1
* * *
* * *
* * * Test Data
Phase value Phase value Phase value
Note) The "PWM data set", the "PWM Frequency set" and the "PWM phase set" commands are executed, asynchronously to the PWM counter, thus the user's command setting is executed after execution time, which is about 128/fosc if {"fPWM=(fosc/2)/2"} is set up. During that execution time, the IC may execute an unexpected setting. For this reason, it is recommended to make sure actual performance is the user's practical application.
(2-1) Explanation of instruction code (a) LED1 to 3 PWM Data Set This instruction set the PWM luminance control Duty data. It sets up for every LED port. LED1 PWM Data Set D7 D6 D5 0 0 0 LED2 PWM Data Set D7 D6 D5 0 0 1 LED3 PWM Data Set D7 D6 D5 0 1 0 D
D4 D
D3 D
D2 D
D1 D
D0 D
D4 D
D3 D
D2 D
D1 D
D0 D
D4 D
D3 D
D2 D
D1 D
D0 D
:DUTY 0,0,0,0,0 to 1,1,1,1,1
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NJU6060
(b) PWM Frequency set / OSC ON/OFF / Output port ON/OFF
This instruction set the PWM Frequency, Oscillator ON/OFF and Output port ON/OFF. PWM Frequency set / OSC ON/OFF / Output port ON/OFF D6 D5 D4 D3 D2 D1 D0 D7 0 1 1 fPWM
OSC LED 1 LED 2 LED 3
PWM Frequency set fPWM
0 : fsys / 32 frequency(Default) 1 : fsys / 64 frequency (fsys : System clock = fosc / 2)
OSC ON/OFF OSC
0 : Oscillator OFF(Default) 1 : Oscillator ON
Output port ON/OFF LED1 to 3
0 : Output port OFF(Default) 1 : Output port ON It sets up for every LED port.
(c) LED1 to 3 PWM Phase set This instruction set the PWM waveform Phase of output LED ports. LED1 PWM Phase set D7 D6 D5 1 0 0
D4 *
D3 *
D2 D1 D0 * Phase *: Don't Care
LED2 PWM Phase set D7 D6 D5 1 0 1
D4 *
D3 *
D2 D1 D0 * Phase *: Don't Care
LED3 PWM Phase set D7 D6 D5 1 1 0
D4 *
D3 *
D2 D1 D0 * Phase *: Don't Care
D1 0 0 1 1
D0 0 1 0 1
Shift Phase Value Same Phase 4-step shift 8-step shift 16-step shift
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NJU6060
Example ) Set Output PWM waveform of LED1 to LED3 terminal, shown below: - LED1 PWM Phase set D1=0, D0=0 - LED2 PWM Phase set D1=1, D0=0 - LED3 PWM Phase set D1=1, D0=1 - PWM Frequency set / OSC ON/OFF / Output port ON/OFF D4=0, D3=1, D2=1, D1=1, D0=1 - LED1 to 3 PWM Data Set (PWM 4, PWM 3, PWM 2, PWM 1, PWM 0) = (1,0,0,0,0)
Internal PWM counter
31
0
1
2
15 16 17 18
30 31
0
1
PWM Frequency (fPWM) = 195Hz(typ.) LED1 terminal 1 17 18 32
LED2 terminal
1
17 18
32
LED3 terminal
1
17 18
32
8-steps
8-steps
(d) Maker Testing This instruction is using for device testing mode (only for maker). If it's absolute necessary in the user's command sequence, the only one command data (1,1,1,0,0,0,0,0) to release the test mode can be accepted.
D7 1
D6 1
D5 1
D4
D3
D2 D1 Test Data
D0
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(3) Serial Interface The NJU6060 interface with MPU by Serial Interface, control for LED.
CSb CLK SIO * D7 D6 D5 D4 D3 D2 D1 D0 *
Note1) Data is not concerned with the signal of CSb but is read into the internal shift register by the rising edge of CLK. Note2) The contents of a shift register are read into the internal instruction decoder by the rising edge of CSb.
note3) An instruction and data should surely input 8 bits. In case of entering over than 8 bits data, valid data is last 8 bits data.
(4)
Reset Circuit Reset Circuit initializes the LSI to the following status by using of the more 1s reset signal into the RES terminal Reset status using the RES terminal 1, fPWM 0: (fosc/2)/32 2, OSC 0: Oscillation OFF 3, LED1 to 3 0: OFF 4, Phase 0,0: Same Phase 5, PWM data 0,0,0,0,0: 1/32
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NJU6060
ABSOLUTE MAXIMUMN RATINGS
Ta=25C
PARAMETERS VDD Power Supply Driver Off Break Down Voltage Driver On Break Down Voltage Input Voltage Power Dissipation Operating Temperature Storage Temperature SYMBOL CONDITIONS VDD terminal LED1, LED2, LED3 terminals LED1, LED2, LED3 terminals CSb, DATA, CLK, RSTb, OSC Terminals Ta=25C RATINGS -0.3 to +6.0 7.0 5.5 -0.3 to VDD+0.3 250 -40 to +85 -55 to +125 UNIT V V V V mW C C
VDD Voffmax Vonmax VIN1 Pdmax Topr Tstg
Note1) Note2)
VSS = 0V to all conditions If the LSI was used out of the absolute maximum ratings, LSI is damaged completely and the riliability become poor. The LSI is used on the electrical characteristics is recommended strongly for normal operation.
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NJU6060
DC ELECTRICAL CHARACTERISTICS
VDD=2.4 to 5.5V, Ta=-40 to 85C
PARAMETERS VDD Power Supply Input "H" Level Voltage Input "L" Level Voltage Input "H" Level Current Input "L" Level Current Output Off Leak Current Output "L" Level Voltage Oscillation Frequency Reset "L" Level Pulse Width Operating Current SYMBOL CONDITIONS RSTb, CSb, CLK, DATA RSTb, CSb, CLK, DATA RSTb, CSb, CLK, DATA, VIN= VDD RSTb, CSb, CLK, DATA, VIN=0V LED1, LED2, LED3: VO=5.5V, Output OFF LED1, LED2. LED3, IO=10mA VDD=3V, ROSC=910k, Ta=25C RSTb VDD=3V, PWM DUTY: 17/32, Output terminal open, ROSC=910k, Ta=25C MIN. TYP. MAX. Unit
VDD VIH VIL IIH IIL IOFFH VOL fOSC tRW IDD
2.4 0.8VDD 0
5.5 VDD 0.2VDD 5.0
V V V A A
-5.0 6.0 0.5 10.23 1.0 6.0 12.0 12.48 14.72
A V kHz s A
Note1):
Input Terminal Structure
VDD
RSTb, CSb, CLK, DATA terminals
LED1, LED2, LED3 terminals
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NJU6060
Relation between oscillation frequency and LCD frame frequency Set Output PWM waveform of LED1 to LED3 terminal, shown below: - LED1 PWM Phase set D1=0, D0=0 - LED2 PWM Phase set D1=1, D0=0 - LED3 PWM Phase set D1=1, D0=1 - PWM Frequency set / OSC ON/OFF / Output port ON/OFF D4=0, D3=1, D2=1, D1=1, D0=1 - LED1 to 3 PWM Data Set (PWM 4, PWM 3, PWM 2, PWM 1, PWM 0) = (1,0,0,0,0) Tsys
32 1 2 3 16 17 18 19 31 32 1 2 fosc = 12.48kHz fsys = fosc/2 = 6.24kHz fPWM=: fsys / 32 = 195Hz
PWM Frequency (fPWM) = 195Hz(typ.) LED1 terminal 1 17 18 32
LED2 terminal
1
17 18
32
LED3 terminal
1
17 18
32
8-steps
8-steps
Tsys=1/fsys=2/fosc (fsys: Internal System Clock Freqency)
Set Output PWM waveform of LED1 to LED3 terminal, shown below: - LED1 PWM Phase set D1=0, D0=0 - LED2 PWM Phase set D1=1, D0=0 - LED3 PWM Phase set D1=1, D0=1 - PWM Frequency set / OSC ON/OFF / Output port ON/OFF D4=1, D3=1, D2=1, D1=1, D0=1 - LED1 to 3 PWM Data Set (PWM 4, PWM 3, PWM 2, PWM 1, PWM 0) = (1,0,0,0,0) Tsys
32 1 2 3 16 17 18 19 31 32 1 2 fosc = 12.48kHz fsys = fosc/2 = 6.24kHz fPWM=: fsys / 64 = 97.5Hz
PWM Frequency (fPWM) = 97.5Hz(typ.) LED1 terminal 1 17 18 32
LED2 terminal
1
17 18
32
LED3 terminal
1
17 18
32
8-steps
8-steps
Tsys=2/fsys=4/fosc (fsys: Internal System Clock Freqency)
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NJU6060
AC ELECTRICAL CHARACTERISTICS
VDD=2.4 to 5.5V, Ta=-40 to 85C
PARAMETERS "L" Level CLK Clock Width "H" Level CLK Clock Width Data Set-Up Time Data Hold Time CSb Set-Up Time CSb Hold Time CLK Wait Time Rising Time Falling Time SYMBOL Terminal CLK CLK CLK, DATA CLK, DATA CSb, CLK CSb, CLK CSb MIN. TYP. MAX. UNIT
tWCLL tWCLH tDS tDH tCS tCH tWCH tr tf
160 160 150 150 160 640 640 15 15
ns ns ns ns ns ns ns ns ns
Serial Input Timing
CSb
tWCLL tWCLH tCH
CLK
tCS
tf D7
tDS tDH
tr D0
tWCH
DATA
Note) All timing based on 20% and 80% of VDD voltage level.
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NJU6060
APPLICATION CIRCUIT
VLED VSS + VDD VDD LED3 LED2 LED1 RLED RLED RLED
NJU6060
RSTb CSb CPU CLK DATA OSC ROSC VSS
Resistor Selection RLED = VLED - VF - VOL ILED LED Current Control Resistor LED Voltage LED Forward Voltage (@ILED) Output "L" Level Voltage (@ILED) LED Forward Current
RLED: VLED: VF: VOL: ILED:
Example) ILED = 10mA, VLED = 5.0V, VF = 2.0V(@ILED = 10mA), VOL=0.5V 5.0V - 2.0V - 0.5V 10mA
RLED =
= 250
Note) VF and VOL are depended on the situation. And decide the optimum values by the actual test when RLED is selected.
[CAUTION] The specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. The application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights.
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Ver.2003-09-02

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