PCA9557PW PDF Datasheet
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Description
This is 8-bit I2C and SMBus I/0 port with reset. INTEGRATED CIRCUITS
PCA9557 8-bit I2C and SMBus I, 0 port with reset
Product data File under Integrated Circuits ICL03 2001 Dec 12
Philips Semiconductors
Philips Semiconductors
Product data
8-bit I2C and SMBus I, 0 port with reset
PCA9557
The system master can also invert the PCA9557 inputs by writing to the active HIGH polarity inversion register. Finally, the system master can reset the PCA9557 in the event of a timeout by asserting a LOW in the reset input. The power-on reset puts the registers in their default state and initializes the I2C, SMBus state machine. The RESET pin causes the same reset, initialization to occur without depowering the part.
FEATURES
PCA9556
PIN CONFIGURATION
SCL 1 SDA 2 16 VDD 15 RESET 14 I, O7 13 I, O6 12 I, O5 11 I, O4 10 I, O3 9 I, O2
Lower voltage, higher performance migration path for the 8 general purpose input, output expander, collector Input, output configuration register Active HIGH polarity inversion register I2C and SMBus .