DS1302 Real Time Clock .

Description:

1. Backup battery is genuine celestial CR2032, Voltage 3V, current 260mAh, non-rechargeable batteries.
2. DS1302 is made large 8-pin DIP chip, chip below IC socket for easy replacement and swap chips.
3. Module operating voltage compatible 3.3V/5V, can be connected with 5V and 3.3V microcontroller.
4. DS1302 work to maintain low power consumption data and clock information when power is less than 1mW.
5. DS1302 between the microcontroller can simply adopt the way synchronous serial communication port only used three lines: (1) RST Reset (2) I / O data lines (3) SCLK Serial Clock.

Specification:
Item Name: DS1302 Real Time Clock Module
Color: show as pictures
Material: PCB
Weight: 0.28 oz (8 g)
Dimensions: 1.97*0.98*0.43 in (5*2.5*1.1cm)
Working temperature: 0??- 70??
PCB single panel, size: 44mm * 23mm * 1.6mm
With four positioning holes, diameter 3.1mm

Note:
1. VCC and GND Do not reversed, it would burn the chip.
2. C51 MCU P0 port requires pull-up resistor, if your device does not have a pull-up resistor can be connected to other ports data lines.

Package included:
1 x DS1302 Module
1 x CR2032 battery