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This is a Waveshare RTC WatchDog HAT for Raspberry Pi, Auto Reset, High Precision RTC. It is an easy way to enable a global positioning function for your Raspberry Pi.
- USB Type-C power input
- MAX705 watchdog
- Watchdog output enable : 1: enabled, 0: disabled
- CR1220 RTC battery holder: RTC power supply supports CR1220 button cell
- Watchdog output warning: lights up if the watchdog is overflow
- Raspberry Pi 40PIN GPIO header
- RTC chip: DS3231 high precision RTC chip
- Watchdog reset pin selection
- Control interface for use with other host boards
Features :
MAX705 monitoring circuit with auto-reset function
Incorporates DS3231SN high precision RTC chip, with backup battery holder
Reset pin selection for switching watchdog
Indicator for watchdog output warning
Specifications:
Max705 Specifications:
Operating Voltage Range:1~5.5 V
Supply Current:150 µA
Reset Threshold Voltage:4.50~4.75 V
Watchdog Timeout Period:1~2.25 V
WDI Input Current: 50 µA
DS3231 Specifications:
Supply Voltage:2.3~5.5 V
Active Supply Current: (i)200 µA @3.3 V (ii)300 µA @5.5 V
Output Frequency:32.768 kHz
SCL Clock Frequency:100 kHz
Package Includes:
1 x Waveshare RTC WatchDog HAT for Raspberry Pi, Auto Reset, High Precision
RTC
