PT7C4300 데이터 시트보기 (PDF) - Pericom Semiconductor

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PT7C4300

Real-time Clock Module (I2C Bus)

Pericom Semiconductor 

Data Sheet

PT7C4300

Real-time Clock Module (I2C Bus)

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Pin Configuration

Pin Description

Pin no.

1

2

Pin

Type

Description

X1

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

Or external clock input.

X2

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

3

VBAT

P Battery Supply Voltage.

4

GND

P Ground.

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.

6

SCL

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

Frequency Test / Output Driver. Open drain. 512Hz output when Frequency Test is selected.

7

FT/OUT O

Output DC level by register selection. Frequency Test is prior.

8

VCC

P Supply Voltage.

PT0222(02/06)

3

Ver: 0

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