pca9557bs NXP Semiconductors, pca9557bs Datasheet - Page 3
pca9557bs
Manufacturer Part Number
pca9557bs
Description
8-bit I2c And Smbus I/0 Port With Reset
Manufacturer
NXP Semiconductors
Datasheet
1.PCA9557BS.pdf
(26 pages)
Available stocks
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Part Number:
pca9557bs,118
Manufacturer:
TI
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3 946
NXP Semiconductors
PCA9557_5
Product data sheet
Fig 2. Simplified schematic of IO0
write configuration
write polarity
shift register
shift register
shift register
write pulse
read pulse
data from
data from
data from
On power-up or reset, all registers return to default values.
pulse
pulse
configuration
register
D
CK
FF
Rev. 05 — 12 September 2007
Q
Q
output port
register
D
CK
FF
Q
8-bit I
input port
register
polarity inversion
register
D
CK
D
CK
2
FF
FF
C-bus and SMBus I/O port with reset
Q
Q
PCA9557
© NXP B.V. 2007. All rights reserved.
ESD protection
diode
output port
register data
IO0
V
input port
register data
polarity inversion
register data
SS
002aad277
3 of 26
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