DS3231 Real Time Clock Module 3.3V 5V Precise, with battery

Specifications:

• Voltage Supply: 2.2 V ~ 5.5 V (for RTC).
• Time Format: HH: MM: SS (12/24 hr).
• 1 Hz output pin SQW.
• Date Format: YY-MM-DD-dd.
• DS 3231 based RTC with 2032 Battery Holder.
• 32 KHz output pin 32K.
• Size: 38mm x22mm x14mm

Features :

1. This is the DS1307 Real Time Clock developed by one of our designers.
2. Two-wire I2C interface.
3. Hour: Minutes: Seconds AM/PM.
4. Day Month, Date – Year.
5. DS1307 based RTC with LIR2032 battery (Battery include).
6. 1Hz output pin.
7. Consumes less than 500nA in battery backup mode with oscillator running
8. Available in 8-pin DIP or SOIC
9. Underwriters Laboratory (UL) recognized
10. Real-time clock (RTC) counts seconds, minutes, hours, date of the month, month, day of the week, and year with leap-year compensation valid up to 2100
11. 56-byte non-volatile RAM for data storage
12. 56 Bytes of Non-volatile memory available to the user.
13. The DS1307 is accessed via the I2C protocol.
14. The module comes fully assembled and pre-programmed with the current time.