I'm playing with the PIC10F320 at the moment. Minimalism is fun. $0.50 in 1 off quantities. 6-pin SOT-23 package. 16MHz. 0.5K of program space. 64 bytes of RAM. Waveform generator. ADC. Timers. PWM and the coolest thing a configurable logic cell which works while the CPU is asleep.
I've got a semi-working morse iambic keyer in that and it uses 40uA of current running flat out. I'm working on sleeps now. I reckon I can get it down to 100nA average based on the wake time and 20nA sleep current. I can't actually measure down that low even with my 5.5 digit HP 3478A
I've got a semi-working morse iambic keyer in that and it uses 40uA of current running flat out. I'm working on sleeps now. I reckon I can get it down to 100nA average based on the wake time and 20nA sleep current. I can't actually measure down that low even with my 5.5 digit HP 3478A