’Description:
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 x 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
GND ? GND
CLK ? P02
DAT ? P01
RST ? P00