uM-PWM1 Servo Coprocessor

The uM-PWM1 chip is designed to work with pulse-width modulated signals used for remote control servo applications. It provides up to 8 input channels for monitoring pulse widths and 8 output channels for producing pulse width modulated (PWM) signals at either 50 Hz or a selectable frequency from 10 to 450 Hz. It can be interfaced with a microcontroller using an I2C or serial data interface.

Features

• internal oscillator
• I2C bus interface (up to 400 Kbps)
• serial data interface
• up to 8 input channels
  • pulse widths measured with ± 1 microsecond accuracy
  • pulse count
  • high time
  • low time
  • frequency
• provides decoding of Pulse Position Modulation (PPM) input signal
• 8 output channels
• pulse widths generated with ± 1 microsecond accuracy
• selectable output channel frequency
• standard frequency (50 Hz)
• alternate frequency (from 10 to 450 Hz)
• pulse widths restricted to specified range
• 800 to 2200 microseconds standard pulse widths
• 500 to 2500 extended pulse widths
• output channel movements can be coordinated and synchronized
• speed and time of output channel movements can be controlled

·  provides encoding of Pulse Position Modulation (PPM) output signal

·  5V operating voltage

Applications

• remote control servos
• controlling radio-control models
• UAV
• robotics
• automation
  
• special effects