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零件编号
产品描述 (功能)
PCA9556(1998) 查看數據表(PDF) - Philips Electronics
零件编号
产品描述 (功能)
生产厂家
PCA9556
(Rev.:1998)
Octal SMBus Registered Interface
Philips Electronics
PCA9556 Datasheet PDF : 12 Pages
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Philips Semiconductors
Octal SMBus Registered Interface
SIMPLIFIED SCHEMATIC OF I/O0
DATA FROM
SHIFT REGISTER
DATA FROM
SHIFT REGISTER
WRITE MASK PULSE
INPUT/OUTPUT
MASK REGISTER
DQ
FF
C
K
Q
WRITE PULSE
WRITE
REGISTER
DQ
FF
C
K
Q
READ PULSE
DATA FROM
SHIFT REGISTER
WRITE
POLARITY
PULSE
READ
REGISTER
DQ
FF
C
K
Q
POLARITY
REGISTER
DQ
FF
C
K
Q
NOTE: ON POWER-UP OR RESET, ALL REGISTERS RETURN TO DEFAULT VALUES
Figure 3. Simplified schematic of I/O0
Product specification
PCA9556
OUTPUT PORT
REGISTER DATA
I/O0
ESD PROTECTION DIODE
V
SS
INPUT PORT
REGISTER DATA
POLARITY
REGISTER DATA
su01047
1998 Dec 18
4
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