DS1302 Real Time Clock Module w/ CR2032 Button Battery

The real time clock module provides seconds, minutes, hours, days, date, months, and year information. The end of the month date is automatically adjusted for months with less than 31 days, including correction for leap years. This real time clock module communicates with a microprocessor via a simply serial interface. The clock module operates in either 24-hour or 12-hour format with AM / PM indicator.

Description:

• 31 x 8 RAM for scratchpad data storage
• Serial I/O interface for minimum pin count
• Wide Working Voltage: 2.0 ~ 5.5V
• Single-byte and multi-byte transmission for clock or RAM data read / write
• TTL-compatible (Vcc=5V)
• Working Temperature: 0 to +70℃
• 32.768KHz crystal oscillator
• Equipped with a 260mAh CR2032 button battery, not rechargeable
• Overall Size: Approx. 44 x 23 x 11mm

Wiring:

• Vcc - +5V / 3.3V
• GND - GND
• CLK - P01
• DAT - P02
• RST - P00

Note:

• Do not reverse VCC and GND, or it will cause damage
• It requires a pull-up resistor for P0 port of 51 MCU, if without, you can connect the data cable to other terminal

Package Includes:

• 1 x Real Time Clock Module
• 4 x Plastic Fixing Bolts