Real time clock module

Model: HW-084.
Real time clock module.
The module adds timestamp and event scheduling information to your microcontroller projects. This module generates seconds, minutes, hours, day, date, month and year, and provides timekeeping until 2100 while compensating for leap years.

Features:
Accurate RTC manages all timekeeping functions
Battery-backup input for continuous timekeeping
Low power operation extends battery-backup run time.
Breadboard-friendly 6-pin SIP header

Specifications:
Clock chip: DS3231
Memory chip: AT24C32 (32K)
Operating voltage: 3.3 to 5.5 VDC
Communication: I2C bus, up to 400 kHz
Operating Temperature Ranges: commercial (0°C to +70°C) and industrial (-40°C to +85°C)
Accuracy from 0°C to +40°C: ±2ppm
Accuracy from -40°C to +85°C: ±3.5ppm
Dimensions: 38 x 22 x 14 mm