The RTC DS3231 module is a real-time clock that enables accurate time-keeping with minimum fuss.

It uses a DS3231 IC, which is an extremely accurate RTC chip with a built-in 32 kHz crystal oscillator. The chip also features a basic temperature sensor and alarm clock capability.

The RTC module uses a standard I²C interface and can easily be interfaced with various developments boards (such as an Arduino® compatible board).

Features

• extremely accurate RTC chip with built-in 32 kHz crystal
• temperature sensor
• alarm clock capability

Specifications

• supply voltage: 3,3 - 5 V DC
• RTC IC: DS3231
• RTC accuracy: ± 2 ppm (from 0 °C to + 40 °C)
• temperature sensor accuracy: ± 3 °C
• max. I²C bus frequency: 400 kHz
• dimensions (W x L x H): 43,2 x 22,4 x 14,7 mm
• backup battery: CR2032 (included)