AB-RTC-TC-32.768kHz-2

Real Time Clock Module with I2C Bus

Revision: A 8/4/2025

Page 3

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Parameters

Symbol Min. Typ. Max. Units

Notes

PowerSupply(pad6)[Note1,2] VDD 1.6 3.0 5.5 V

Operating Temperature

TOPR

-40

25

85

℃

Current consumption

IDD1

1.25

5.1

uA

VDD = 5.0V, fSCL=0Hz,

FOE=GND, /INT = VDD;;

FOUT off (High-Z); Compensation

interval 2s;

IDD2

1.0

4.9

uA

VDD = 3.0V, fSCL=0Hz,

FOE=GND, /INT = VDD;;

FOUT off (High-Z); Compensation

interval 2s;

IDD3

5.8

20

uA

VDD= 5.0V, fSCL=0Hz,

FOE=VDD, /INT = VDD;

FOUT:32.768kHz, CL=0pF;

Compensation interval 2s;

IDD4

3.8

19

uA

VDD= 3.0V, fSCL=0Hz,

FOE=VDD, /INT = VDD;

FOUT:32.768kHz, CL=0pF;

Compensation interval 2s;

I2C clock signal (pad 2)

SCL

Input voltage high-level

VIH

0.8*VDD

5.5

V

Input voltage low-level

VIL

GND-0.3

0.2*VDD

V

Input Leak Current

ILK

-0.5

0.5

uA

VIN = VDD or GND

I2C data signal (pad 13)

SDA

Input voltage high-level

VIH

0.8*VDD

5.5

V

Input voltage low-level

VIL

GND-0.3

0.2*VDD

V

Output voltage Low-level

VOL

GND

GND+0.4

V

VDD≥3.0V, IOL = 3mA

Input Leak Current

ILK

-0.5

0.5

uA

VIN = VDD or GND

Output Leak Current

IOZ

-0.5

0.5

uA

VIN = VDD or GND

Frequency Output (pad 3)

FOUT

Output voltage high-level

VOH

4.0

5.0

V

VDD=5.0V, IOH = -1mA

2.2

3.0

VDD=3.0V, IOH = -1mA

2.9

3.0

VDD=3.0V, IOH = -100uA

Output voltage low-level

VOL

GND

GND+0.5

V

VDD=5.0V, IOL = 1mA

GND

GND+0.8

VDD=3.0V, IOL = 1mA

GND

GND+0.1

VDD=3.0V, IOL = 100uA

Output Control Pin (pad 7)

FOE

Input voltage high-level

VIH

0.8*VDD

5.5

V

Input voltage low-level

VIL

GND-0.3

0.2*VDD

V

Input Leak Current

ILK

-0.5

0.5

uA

VIN = VDD or GND

Output Control Pin (pad 10)

/INT

Output voltage low-level

VOL

GND

GND+0.25

V

VDD=5.0V, IOL = 1mA

GND

GND+0.4

VDD=3.0V, IOL = 1mA

Output Leak Current

IOZ

-0.5

0.5

uA

VIN = VDD or GND

DC Characteristics (Unless otherwise specified, GND=0V, VBAT=VDD=1.2~5.5V, VIO=1.6V ~5.5V, Ta=-40

℃~+85℃)