In SX Microcontrollers, SX/B Compiler and SX-Key Tool, jdemeyer wrote:

I am using the Watchdog timer in a program similar to Bean's Magic 8 program.  There is some set up and then it executes:

[code]
RESETWDT
SLEEP
[/code]

When the Watchdog times out, the SX comes out of SLEEP and starts the program again.

I am seeing odd behavior in the Watchdog timer when I operate the SX at 3.3 volts.  At 5 volts, the program operates as expected.  At 3.3 volts, I have seen longer than expected time outs (I am using the maximum of 2 seconds - I have seen 3 and longer), and I have seen the program hang when the Watchdog should rescue it.  The only difference I see is the supply voltage.  Any ideas?

Joe

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