DS1302 real time clock

PCB a single panel, size: 42mm * 24mm * 12mm(max)
with 4 holes, about 3.1mm in diameter
Color:green (as the picture shows)
genuine spare battery for the celestial sphere CR2032, Voltage 3V, current is 260mAh, non-rechargeable batteries.
Crystal 32.768KHz, matching capacitance 6pF, size 2 * 6mm
DS1302 made large 8-pin DIP chip, chip, IC Block below for easy replacement and plug the chip
module operating voltage compatible 3.3V/5V, 5V and 3.3V microcontrollers can be connected with
Operating temperature: 0-- 70
Wiring (to provide the program, for example, can take any IO port, the port defined in the program can be modified):
VCC → +5 V/3.3V
GND → GND
CLK → P02
DAT → P01
RST → P00
1.51 MCU P0 port requires a pull-up, if your single-chip pull-up resistor is not connected, you can port the data cable to the other
2VCC and GND must not be reversed, or it will burn the chip