I was hacking along with an old mega8, then needed to use 2 discrete pwm so I decided to plonk in a mega88 I had around...
But it's not recognized by my programmer, nor with the usbasp. I plonked in a m168, and the same happend - not recognized - .... putting the m8 back in, and it's recognized!
My wiring is dead simple. 5V vcc, 10K pullup on reset, AVCC+VREF+VCC hooked, both GND grounded, and a few caps on VCC... The ISP connection doesn't have any pullups/down, and these pins are not used fro anything else either..
So, what's going on ? the datasheet shows these are pin compatible.. what am I missing ?