RS5C372A-E2-F 데이터 시트보기 (PDF) - RICOH Co.,Ltd.

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RS5C372A-E2-F

I2C bus SERIAL INTERFACE REAL-TIME CLOCK ICs

RICOH Co.,Ltd. 

RS5C372A/B

5.2 Example of Interface Circuit to the CPU

˙ RS5C372A

System power supply

Backup power supply

RS5C372A

VDD

INTRA

INTRB

OSCIN

OSCOUT

VSS

SCL

SDA

32.768kHz or

32.000kHz

Microcontroller

VDD

*) The SCL and SDA pins of the RS5C372A do not contain protective diodes on VDD side. Therefore, back up power supply≤system power supply caus-

es no adverse effect.

˙ RS5C372B

System power supply

Backup power supply

RS5C372B

32KOUT

VDD

INTR

OSCIN

OSCOUT

VSS

SCL

SDA

32.768kHz or

32.000kHz

Microcontroller

VDD

*) The SCL and SDA pins of the RS5C372B do not contain protective diodes on VDD side. Therefore, back up power supply≤system power supply caus-

es no adverse effect.

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