SPI/I2C PWM Generator?

Discussion in 'General Electronics Chat' started by SenseiTG, May 28, 2008.

  1. SenseiTG

    Thread Starter New Member

    May 28, 2008
    Does anyone know of a single chip (a few support components are ok) that meets or comes close to these requirements:

    PWM generator either:
    Logarithmic, 8 bits or more
    Linear, 12 bits or more

    Duty controlled by SPI/I2C/other serial interface.
    Duty 0% possible

    3 channels or more (or 1 ch and very small)


    Tah, Dave
  2. hgmjr

    Retired Moderator

    Jan 28, 2005
    It sounds like what you are describing is a small microcontroller such as an AVR or a PIC.

    I know the AVR by ATMEL has an 8-pin DIP packaged microcontroller (ATTINY series) that can generate a PWM output with 8-bit or 16-bit counter/timer resolution. It also has the SPI interface. It would seem that with a bit of programming you could design would you need.