DS1302 Real Time Clock Module with Battery CR1220


DS1302 Real Time Clock Module


Dimensions: 16.5mm * 26.3mm * 1.6mm

Backup battery CR1220, voltage 3V, current 260mAh, non-rechargeable batteries. Theoretical data hold time is more than 10 years!

Crystal 32.768KHz, matching capacitance 6pF, size 2 * 6mm

DS1302 8-pin SMD homemade chips

Module operating voltage compatible 3.3V/5V, can be connected with 5V and 3.3V microcontroller

Operating temperature: 0 degree --- 70 degree


VCC2 → +5 V/3.3V


CLK → P02

DAT → P01

RST → P00

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