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Número de pieza
componentes Descripción
PCA9556PW(1998) Ver la hoja de datos (PDF) - Philips Electronics
Número de pieza
componentes Descripción
Fabricante
PCA9556PW
(Rev.:1998)
Octal SMBus Registered Interface
Philips Electronics
PCA9556PW 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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