DS3231 RTC Module Precise Real Time Clock I2C

1. 1Hz output pin SQW.
2. 32KHz output pin 32K.
3. Voltage Supply: 2.2 V ~ 5.5 V (for RTC).
4. Time Format: HH: MM: SS (12/24 hr).
5. Date Format: YY-MM-DD-dd.
6. DS3231 based RTC with 2032 Battery Holder.
7. Highly Accurate RTC
8. Real-Time Clock Counts
9. Digital Temp Sensor Output.
10. Register for Aging Trim.
11. Two Time-of-Day Alarms.
12. Programmable Square-Wave Output Signal.
13. Configurable I2C device Address for AT24C32 using SMD jumpers on PCB (A0, A1, A2).

DS3231 RTC  is 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 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.

Features:

1. Two Time-of-Day Alarms.
2. Digital Temp Sensor Output.
3. Register for Aging Trim.
4. DS3231 RTC with 2032 Battery Holder.
5. Highly Accurate RTC Completely Manages All Timekeeping Functions.
6. 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.
7. Configurable I2C device Address for AT24C32 using SMD jumpers on PCB (A0, A1, A2).
8. Programmable Square-Wave Output Signal.
9. Battery-Backup Input for Continuous Timekeeping.
10. Low Power Operation Extends Battery-Backup Run Time.