RTC DS1307+AT24C64+battery CR1220 I2C Module Precision Clock Module for Arduino MCS-51 ARM PIC

Module parameters:

•  Operating voltage :3.3 - 5 .5 V
•  clock chip: high-precision clock chip DS1307
•  Clock Accuracy :0-40 ° range, the accuracy 2ppm, the error was about 1 minute
•  calendar alarm clock with two
•  programmable square-wave output
•  Real time clock generator seconds, minutes, hours, day, date, month and year timing and provide valid until the year 2100 leap year compensation
•  memory chips: AT24C64 (storage capacity 64Kbit = 8Kbyte)
• I2C bus interface, the maximum transmission speed of 400KHz (working voltage of 5V)

Wiring instructions (For Arduino uno r3 for example):
SCL → A5
SDA → A4
VCC → 5V
GND → GND
Shipping list:

Package Included:

1 X DS1307+ 24C64 (PCB)
1 X 7 Pin Header
1 X 4 Pin Header
1 X battery CR1220