R8A66173SP
R8A66173SP is 4-CH 12-BIT PWM GENERATOR manufactured by Renesas.
DESCRIPTION
R8A66173 has four 12-bit PWM (Pulse Width Modulation) circuits which are built by using the CMOS process. This IC controls PWM waveform by adjusting the “H” width according to serial data sent from MCU (Micro Controller Unit) or other device. Each channel can be independently controlled. High-resolution digital-analog (D-A) converter can be formed easily by connecting a low-pass filter (LPF) circuit to the output pins of this circuit. R8A66173 is the succession product of M66242.
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FEATURES
- Built-in four 12-bit high-resolution PWM circuits
- Easy D-A conversion
- Quick output waveform smoothing Control by 1.22m V possible per step (VCC=5V range)
- Serial data input
- “H” level width setting type
- 4 channels controlled independently
- All 4 channels reset by reset input (R), High-impedance status after reset
- All 4 channels controlled by output control input (OC)
- Settings take effect after ongoing cycle is pleted
- Output : CMOS 3-state output Output current Io=±4m A (Vcc=5.0V range), Io=±2m A (Vcc=3.3V range)
- Wide operating supply voltage range (Vcc=3.0~3.6V or Vcc=4.5~5.5V, single power supply)
- Wide operating temperature range: Ta=-40o C~+85 o C
APPLICATION
- Analog signal control in televisions and audio systems
- Control of lamps, heaters and motors
- For software servo in home appliances and industrial machinery
PIN CONFIGURATION (TOP VIEW)
CHIP SELECT RESET WRITE CONTROL SERIAL DATA INPUT WRITE CLOCK OUTPUT CONTROL
CS R WR SIN Sc LK OC GND
1 2 3 4 5 6 7
14 13 12 11 10 9 8
Vcc PWM1 PWM2 OUTPUT PWM3 PWM4 XOUT XIN CLOCK OUTPUT CLOCK INPUT
REJ03F0264-0100 Rev.1.00 Jan.24.2008 Page 1 of 12
BLOCK DIAGRAM (EACH CHANNEL)
Vcc
Upper byte register SIN SCLK
4 5
8-bit PWM circuit PWM register 12-bit PWM circuit 4-bit-rate multiplier
Input register
PWM1
Low er byte register CS WR
1 3 2 6
12 11
PWM2 PWM3...
