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Part Number
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PCA9554 |
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Manufacturer
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ON Semiconductor |
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Description
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8-bit I2C and SMBus I/O Port |
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Published
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Dec 6, 2020 |
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Detailed Description
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PCA9554
8-bit I2C and SMBus I/O Port with Interrupt
Description
The PCA9554 is a CMOS device that provides 8−bit paralle...
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Datasheet
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PCA9554
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Overview
PCA9554
8-bit I2C and SMBus I/O Port with Interrupt
Description
The PCA9554 is a CMOS device that provides 8−bit parallel input/output port expansion for I2C and SMBus compatible applications.
This I/O expander provides a simple solution in applications where additional I/Os are needed: sensors, power switches, LEDs, pushbuttons, and fans.
The PCA9554 consist of an input port register, an output port register, a configuration register, a polarity inversion register and an I2C/SMBus−compatible serial interface.
Any of the eight I/Os can be configured as an input or output by writing to the configuration register.
The system master can invert the PCA9554 input data by writing to the active−hig...
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