(Battery Included +1Month Warranty) DS3231 AT24C32 I2C Real Time Clock RTC Module CR2032 Battery Size [ElectricA]

DS3231 high precision clock

Operating  voltage of  DS3231 MODULE: 2.3V – 5.5V
Can operate on LOW voltages
Consumes 500nA on battery backup
Maximum voltage at SDA , SCL : VCC + 0.3V
Operating temperature: -45ºC to +80ºC

RTC counts seconds, minutes, hours and year
Accuracy: +2ppm to -2ppm for 0ºC to +40ºC , +3.5ppm to -3.5ppm for -40ºC to +85ºC
Digital temperature sensor with ±3ºC accuracy
Two Time-of-day alarms
Programmable square wave output
Register for Aging trim
400Khz I2C interface
Low power consumption
Automatic power failure battery switch circuitry

The DS3231 is a low cost, high precision I2C real time clock (RTC) with integrated temperature compensated crystal oscillator (TCXO) and crystal. The device includes a battery input that maintains accurate timing when the mains supply is disconnected. The integrated crystal oscillator increases the long-term accuracy of the device and reduces the number of components in the production line. The DS3231 is available in both commercial and industrial temperature ranges and is available in a 16-pin 300 mil SO package.