【Note】

[] Do not include Raspberry Pi

【Overview】

[] This is an RTC WatchDog HAT (B) designed for Raspberry Pi with high-precision RTC and watchdog HAT, which refreshes and counts at a limited time and the watchdog circuit can reset the system.

【Features】

[] Onboard auto reset monitoring circuit.

[] Onboard high-precision clock chip (DS3231SN) for providing accurate timing control.

[] Support I2C communication and a 16-bit counter.

[] Onboard the watchdog status indicator to warn the watchdog timeout.

【Parameters】

[] Communication interface: I2C

[] RTC chip: DS3231

[] Watchdog chip: CH32V003

[] Power supply: 5V

[] Dimensions: 30.5mm x 65mm

[] Fixed hole diameter: 3.0mm

【Designed For Raspberry Pi Series】

[] Standard Raspberry Pi 40PIN GPIO Header, For Raspberry Pi Series Boards, Jetson Nano

[] for reference ONLY, the Raspberry Pi boards and Jetson Nano are NOT included.

【Auto Reset Monitoring】

[] Monitoring Circuit With Auto Reset Function, Using I2C Communication

【High Precision RTC】

[] Incorporates DS3231SN High Precision RTC Chip, With Backup Battery Holder

【What's On Board】

1. USB Type-C power input

2. CH32V003 watchdog

3. CR1220 RTC battery holder : RTC power supply, supports CR1220 button cell

4. Watchdog status indicator : 

Blinking rapidly at a frequency of 100ms when the watchdog overflows

After the watchdog overflows and runs the reboot command, it will blink at a frequency of 500ms if the host is detected as not having powered off

Keeps on when the watchdog function is turned on

Keeps off when the watchdog function is turned off

5. Power indicator

6. Raspberry Pi 40PIN GPIO header : for connecting to Raspberry Pi

7. RTC chip : DS3231 high precision RTC chip

8. Watchdog reset pin selection

9. Control interface : for use with other host boards

【Pinout Definition】

【Outline Dimensions】

[] RTC Watchdog HAT (B) x1

[] 2×20PIN female header x1

[] Standoffs pack x1

To：

Dear Customers, There may be a lag of several hours before we could process your order, depending on the time difference between your location and ours. Sincerely hoping your understanding!

Email(support)

services01@spotpear.com