Pico Real-time Clock (RTC) HAT [Discontinued]

The Pico RTC HAT is a Real-Time clock expansion module for the Raspberry Pi Pico with the powerful IC DS3231, backup battery holder, 3.3V operating voltage and fast (400kHz) I2C Interface that aligns the time of the device with the “Real-Time”.

Note: Raspberry Pi Pico not included. You'll need a Pico with male headers soldered to it. You can grab a Pico here and Pico male headers here, or buy a Pico with pre-soldered headers.

Features

• Accuracy ±2ppm from 0°C to +40°C
• Accuracy ±3.5ppm from -40°C to +85°C
• Battery backup input for continuous timekeeping
• Operating temperature range: 0°C to +70°C Industrial: -40°C to +85°C.
• Real-Time Clock counts Seconds, Minutes, Hours, Day, Date, Month, and Year with leap year Compensation valid up to 2100
• Programmable square-wave output
• Digital temp sensor output: ±3°C accuracy

Specifications

• Operating Voltage - 3.3 V
• DS3231 RTC
• Battery - CR1220 coin cell (battery not included)
• I2C Interface - 400 Khz
• Backup Battery Voltage - 2.3V~5.5V

Package Contents

• 1x Pico RTC HAT

Pico and CR1220 battery not included

Pinout

Pico RTC HAT	Pico Pins
VCC	3V3
GND	GND
RTC SDA	GP6
RTC SCL	GP7

Resources

• Product Wiki
• GitHub