I would like to have 3 timers make a synchronized digital pattern; unfortunately I need to have control of both the frequency and duty cycle of each of them. Fastest one is about 400kHz.
It looks like the ATMEGA allows this kind of thing only on TIMER1 using the ICR1 register; both timer0 and timer2 are fixed frequency (aside from the prescaler).
Is there an AVR device that allows this? In other words, a device that has ICR0 and ICR2?
(I did try bitbanging two of them using an interrupt and manually counting, but it's not fast enough.)