PT7C4307WE 데이터 시트보기 (PDF) - Pericom Semiconductor

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PT7C4307WE

Real-time Clock Module (I2C Bus)

Pericom Semiconductor 

Preliminary Data Sheet

PT7C4307

Real-time Clock Module (I2C Bus)

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Pin Assignment

PT7C4307

1 X1

VCC 8

2 X2

SQW/OUT 7

3 VBAT

SCL 6

4 GND

SDA 5

DIP-8

SOIC-8

Pin Description

Pin no.

Pin

Type

Description

1

X1

I Oscillator Circuit Input. Together with X2, 32.768kHz crystal is connected between them.

2

X2

O

Oscillator Circuit Output. Together with X1, 32.768kHz crystal is connected between them.

When 32.768kHz external input, X2 must be float.

6

SCL

I Serial Clock Input. SCL is used to synchronize data movement on the I2C serial interface.

5

SDA

I/O

Serial Data Input/Output. SDA is the input/output pin for the 2-wire serial interface. The

SDA pin is open-drain output and requires an external pull-up resistor.

7

SQW/OUT

O

Square Wave/Output Driver. Open drain. Four frequencies selectable: 32.768k, 8.192k,

4.096k, 1Hz when SQWE bit is set to 1.

8

VCC

P Power. Primary power for PT7C4307.

3

VBAT

P +3V Battery Power.

4

GND

P Ground.

PT0206(02/05)

3

Ver: 0

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