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I built a system once based on a Microchip PIC running with a 32.768KHz crystal main clock. The CPU draws about 11uA when running in this mode. Imagine you ca
by YZF 9y ago
I built a system once based on a Microchip PIC running with a 32.768KHz crystal main clock. The CPU draws about 11uA when running in this mode. Imagine you can do something useful with only 32768 instructions/s vs the 1 billion you get a modern CPU ;)
- DamonHD 9y agoOur AVR based setup uses the 32768Hz clock to wake up every two seconds to then do as much as it needs to at 1MIPS - "race to idle". Almost exactly the performance (other than the better I/O and the multiply op) that I used to get out of a Z80A or a 6502 (eg BBC Micro).