AB-RTC-TC-32.768kHz-2

Real Time Clock Module with I2C Bus

Revision: A 8/4/2025

Page 2

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Parameters

Symbol Min. Typ. Max. Units Notes

Frequency stability

∆f/f −3.4

+3.4

ppm -40℃to+85℃

Oscillation start time

tSTA

1

s

@25℃

Year Aging

fa

±3

ppm

First year@25℃

Temperature Sensor Accuracy

Temp

±5

℃

VDD=3.0V

FOUT duty cycle`

Tw/t

40

50

60

%

Frequency Characteristics (Unless otherwise specified, GND=0V,VDD = 2.5V ~ 5.5V, Ta=-40

℃~+85℃)

Block Diagram