DESCRIPTION

M66242 Integrated Circuit has four 12-bit PWM (pulse width modulation) circuits which are built by using the CMOS (complementary metal oxide semiconductor) 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 converter can be formed easily by connecting a low-pass filter circuit to the output pins of this circuit.

FEATURES

? Built-in four 12-bit high-resolution pulse width modulation circuits

? Easy digital-analog conversion – Quick output waveform smoothing

Control by 1.22mV possible per step (VCC =5V)

? Serial data input

? “H” level width setting type

? 4 independently controlled channels

? 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 completed

? Input: TTL level

? Output: CMOS 3-state output

Output current IO = ±4mA

? VCC =5V ± 10

APPLICATION

? Analog signal control in televisions and audio systems

? Control of lamps, heaters and motors

? For software servo in home appliances and industrial machinery