Description It’s a DS3231 Real Time Clock Module. This is a RTC based module. 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. Features DS3231 based RTC with 2032 Battery Holder. Highly Accurate RTC Real-Time Clock Counts Digital Temp Sensor Output. Register for Aging Trim. Two Time-of-Day Alarms. Programmable Square-Wave Output Signal. Configurable I2C device Address for AT24C32 using SMD jumpers on PCB (A0, A1, A2). 1Hz output pin SQW. 32KHz output pin 32K. Time Format: HH: MM: SS (12/24 hr). Date Format: YY-MM-DD. Specification Voltage Supply 2.2 V ~ 5.5 V Active Supply Current (VCC = 3.63V/VCC = 5.5V) 200/300 µA Color Blue Country of Origin China
