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TPLD1202: Erratic WD simulation behavior

Part Number: TPLD1202

Tool/software:

Hello,

I have done the following simple design in the Interconnect studio tool:

My watchdog configuration is the following:

However, the simulated behavior is totally erratic, the resulting triggering delay and pulse width are way out of expectations.

Configured as 25MHz/64 for the watchdog clock, I wouldn't expect with my configuration a watchdog triggering of 608µs and a pulse width of 181µs as depicted on the following curves:

Am I missing something or is this a bug ?

I have attached the design file if needed.

Clément

pre-design.zip