DS3231 RTC Module Precise Real Time Clock I2C AT24C32 without cell

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. Note: Battery not included 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. Voltage Supply for RTC: 2.2 V ~ 5.5 V Time and Date Format: Time: HH: MM: SS (12/24 hr). Date Format: YY-MM-DD-dd. Digital Temp Sensor Output: 10 bit, ±3°C Accuracy and 0.25C resolution.