[SOLVED] ATTiny12 running with internal clock

[Rosko]

Does anybody have any experiance with ATTiny12 running with internal clock.How accurate is the clock?Can it run half-duplex RS232 (software emulated)??

Alex

 

[singhjaya]

I have used it, it is a nice processor, but no, the internal clock is not good enough for RS-232 communication. It is a pretty good internal clock, but not that good over time and temperature.

 

[Rosko]

Tnx!
I'll have samples next week and I'll try it anyway, but I'll have plan B prepared just in case :smile)

Yeah I looked more carefully at datasheets and the temperature could realy couse a lot of problems :sad:

Alex

 

[pixies]

On 2002-02-22 14:54, Rosko wrote:
Does anybody have any experiance with ATTiny12 running with internal clock.How accurate is the clock?Can it run half-duplex RS232 (software emulated)??

Alex

Hi Alex,
The Tiny12 internal oscillator can be calibrate. After this operation, you have 5% of precision. There's no problem to emulate an UART with using the timer with interrupt.

Bye