Enable the on-chip brown out detect function.
Some PICAXE chips have a programmable internal brown out detect function, to automatically cleanly reset the chip on a power brown out (temporary voltage drop). The brown out detect is always enabled by default when a program runs.
However it is sometimes beneficial to disable this function to reduce current drain in battery powered applications whilst the chip is 'sleeping'. The brownout voltage is fixed for each device as follows:
||20X2, 14M2, 18M2, 20M2, 28X2, 40X2
||08, 08M, 14M, 20M, 28X1, 40X1
||18, 18A, 18M, 18X, 28A, 28X, 40X
Use of the disablebod command prior to a sleep will considerably reduce the current drawn during the actual sleep command.
- Applies To:
All (except 08, 18, 18A, 18M, 18X, 28, 28A, 28X, 40X)
- See Also:
- Related Create:
Enabling brown out detection
This program will disable the brown out detection for 23 seconds then re-enable it.
- Code Example:
main: disablebod ; disable brown out
sleep 10 ; sleep for 23 seconds (10x2.3)
enablebod ; enable brown out
goto main ; loop back to start
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