DS3231 AT24C32 IIC Module Precision Clock Module

1 Size: 38mm (length) * 22mm (W) * 14mm (height)

2 Weight: 8g

3 Operating voltage :3.3 - 5 .5 V

4 chip: high-precision DS3231

5 Clock Accuracy :0-40 ° range, the accuracy 2ppm, the error was about 1 minute

6 two calendar alarm clock

7 programmable square-wave output

8 accurate timing from second to year and valid leap year compensation until the year 2100 

9 temperature sensor in the chip and with an accuracy of ± 3 °

10 memory chips: AT24C32 (storage capacity 32K)

11.IIC bus interface, the maximum transmission speed 400KHz (working voltage 5V)

12 can be cascaded with other IIC device, 24C32 addresses can be shorted A0/A1/A2 modify default address is 0x57

13 with rechargeable battery LIR2032, to ensure the system after power failure, the clock move any natural normal

14 Packing: single anti-static packaging

Wiring instructions (for Arduino uno r3 for example):

SCL → A5

SDA → A4

VCC → 5V

GND → GND

Note:  battery not included.