Product description
RTC WatchDog HAT (B) is an expansion board for Raspberry Pi that combines a high-precision real-time clock (RTC) with an integrated watchdog function. The module is designed for applications where stable operation and accurate time reference are required, even during power interruptions or system faults.
The board is based on the DS3231SN RTC circuit, which provides very accurate timekeeping and supports battery backup. The integrated watchdog circuit monitors the system and can automatically restart the Raspberry Pi in case of freezes or operational disturbances. Suitable for applications such as data logging and IoT systems.
Communication is handled via I2C, and the board connects directly to the Raspberry Pi through the standard 40-pin GPIO header. Also compatible with Jetson Nano.
Specifications:
- Communication interface: I2C
- RTC chip: DS3231
- Watchdog chip: CH32V003
- Supply voltage: 5 V via GPIO or USB-C
- GPIO connection: 40-pin Raspberry Pi header
- Battery backup: 3 V CR1220
- Indication: Status LEDs for watchdog and power
- Dimensions: 30.5 x 65 mm
