STWD100NPWY3F Watchdog timer issues.
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2018-09-19 07:58 AM
I'm using a STWD100NPWY3F watchdog timer, and I can't get it working according to the datasheet. I have the following connections:
VCC: 3.3V
GND: GND
EN: GND
WDO: 10K pull up to VCC
WDI: pull down to GND and toggled to VCC
WDO stays low and keeps the MCU in a reset state. If I pull EN high, WDO goes high and the MCU operates. With EN low, even at startup, the WDO remains low. I have tried toggling WDI high and low, but WDO never changes state unless I pull EN high (which disables it).
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