ColdFire/68K Microcontrollers and ProcessorsのトピックRe: 16 bit PWM on 64 pin MCF52221CAE?

16 bit PWM on 64 pin MCF52221CAE?

RichTestardi — Tue, 24 Jun 2008 23:24:19 GMT

Hi,

Does anyone know if I can use the PWM timers in 16 bit (concatenated) mode on the (pin-limited) 64 pin MCF52221CAE?

The reference manual says that when the timers are operated in 16 bit (concatenated) mode, that the outputs are available on pins PWMOUT7, 5, 3, and 1.

But the (pin-limited) 64 pin MCF52221CAE only seems to have pins bound to PWMOUT6, 4, 2, and 0 (at pins DTIN3, 2, 1, and 0).

Thanks!

-- Rich

Re: 16 bit PWM on 64 pin MCF52221CAE?

JimDon — Tue, 24 Jun 2008 23:52:58 GMT

I am afraid your assessment is 100% correct - you can't use the 16 bit mode on this chip.

You will have to do it manually, perhaps using a PIT or a DTIM.

Re: 16 bit PWM on 64 pin MCF52221CAE?

RichTestardi — Wed, 25 Jun 2008 00:21:18 GMT

Thanks!!! I'll be able to get by with 8-bit mode.

-- Rich