Precision control of motors

[kshvts]

Hi! i wanted to use an IC for a project of mine: It has to have at least 2 external interrupts, and either SPI or I2C; such that the pins of these do no hinder the pins of the interrupt. The objective is to use an IC with as less pins as possible. External Interrupt is not to be of the type IOC. PWM channel is desirable; but not essential. In case PWM doesnt exist; IC must have at least 1 16 bit timer. Flash memory is to be >= 4 kb. Architecture can be 8/16/32 bit; and packaging is also flexible. Anything else is not an issue.

 

[nickelflippr]

Have a look at the 28 pin PIC18F2331 data sheet for the power control PWM module, which has all manner of options. The 18 pin PIC18F1330 could also be an option if a software I2C or SPI could be used.

 

[WTP Pepper]

My choice would be an C8051F320/321 from SiLabs. Both have all your requirements and are cheap.