PT7C4300 Datasheet, PDF (3/17 Pages) Pericom Semiconductor Corporation – Real-time Clock Module (I²c Bus)

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 I}²_{C 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