Low-power S-35710 watchdog/wake-up timer breakout with STEMMA QT/Qwiic I2C connectors. Provides a digitally configurable alarm from 1 second up to 194 days, with OUT and reset pins plus an output polarity switch.
| Pin | Position | Type |
|---|---|---|
| VIN | header | Power |
| GND | header | Ground |
| SCL | header | I2C |
| SDA | header | I2C |
| OUT | header | GPIO |
| !RST | header | GPIO |
| STEMMA QT | left and right edge | I2C |
| NORINV switch | top edge | Control |
DS3231/DS3232 temperature-compensated RTCs, the budget PCF8523 and DS1307, the Si5351A clock generator (8kHz–160MHz), and bare 16MHz crystals — matched to drift tolerance and supply voltage.
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