DS3231 RTC Module Precise Real Time Clock I2C AT24C32

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Overview
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DS3231 RTC is a Precise Real-Time Clock Module with 32Kbit EEPROM and a built-in 10-bit temperature sensor having a resolution of 0.25C.

The DS3231 RTC module Precise Real-Time Clock Module is a low-cost, extremely accurate I²C real-time clock (RTC) with an integrated temperature-compensated crystal oscillator (TCXO) and crystal. The device incorporates a battery input and maintains accurate timekeeping when the main power to the device is interrupted.

The integration of the crystal resonator enhances the long-term accuracy of the device as well as reduces the piece-part count in a manufacturing line. The ds3231 Arduino is available in commercial and industrial temperature ranges and is offered in a 16-pin, 300-mil SO package.

For more details about the IC, the DS 3231 datasheet is attached.

Connection Diagram:

Features:

Two Time-of-Day Alarms.
Digital Temp Sensor Output.
Register for Aging Trim.
DS 3231 RTC with 2032 Battery Holder.
Highly Accurate RTC Completely Manages All Timekeeping Functions.
Real-Time Clock Counts Seconds, Minutes, Hours, Date of the Month, Month, Day of the Week, and Year, with Leap-Year Compensation Valid Up to 2100.
Configurable I2C device Address for AT24C32 using SMD jumpers on PCB (A0, A1, A2).
Programmable Square-Wave Output Signal.
Battery-Backup Input for Continuous Timekeeping.
Low Power Operation Extends Battery-Backup Run Time.

Specifications:

Operating Voltage (VDC):	2.7 ~ 5.5
Voltage Supply for RTC	2.2 V ~ 5.5 V
Accuracy	±2ppm from 0°C to +40°C., ±3.5ppm from -40°C to +85°C.
Battery Holder	2032 Coin Battery.
I2C interface	Fast (400kHz) I2C Interface.
EEPROM	AT24C32 32Kbit Serial I2C.
Time and Date Format	Time: HH: MM: SS (12/24 hr). Date Format: YY-MM-DD-dd.
Operating Temperature (°C)	-40 to 85
Digital Temp Sensor Output	10 bit, ±3°C Accuracy and 0.25C resolution.
Dimensions (L x W x H) mm	38 x 22 x 14
Weight (g):	8
Shipping Weight	0.012 kg
Shipping Dimensions	12 × 8 × 5 cm