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零件编号
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PCA9539 查看數據表(PDF) - Philips Electronics
零件编号
产品描述 (功能)
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PCA9539
16-bit I2C and SMBus, low power I/O port with interrupt and reset
Philips Electronics
PCA9539 Datasheet PDF : 21 Pages
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Philips Semiconductors
16-bit I
2
C and SMBus, low power I/O port
with interrupt and reset
Product data sheet
PCA9539
BLOCK DIAGRAM
PCA9539
A0
A1
SCL
SDA
V
DD
RESET
V
SS
INPUT
FILTER
POWER-ON
RESET
8-BIT
INPUT/
OUTPUT
PORTS
WRITE pulse
READ pulse
I
2
C/SMBUS
CONTROL
8-BIT
WRITE pulse
INPUT/
OUTPUT
PORTS
READ pulse
I/O1.0
I/O1.1
I/O1.2
I/O1.3
I/O1.4
I/O1.5
I/O1.6
I/O1.7
I/O0.0
I/O0.1
I/O0.2
I/O0.3
I/O0.4
I/O0.5
I/O0.6
I/O0.7
V
CC
INT
LP
FILTER
NOTE: ALL I/Os ARE SET TO INPUTS AT RESET
SW02202
Figure 3. Block diagram
2004 Sep 30
4
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