PI4IOE5V9521
Features
Operation power supply voltage from 2.3V to 5.5V 2-bit I2C-bus GPIO with interrupt and reset 5V tolerant I/Os Active Low interrupt output Active Low reset input Polarity inversion register Low current consumption 0Hz to 1MHz clock frequency Noise filter on SCL/SDA inputs Power-on reset ESD protection (4KV HBM and 1KV CDM) Package offered :UQFN 1.6x1.6-8
Pin Configuration
Description
The PI4IOE5V9521 provides 2 bits of General Purpose parallel Input/Output (GPIO) expansion for I2C-bus/ SMBus applications. It includes the features such as higher driving capability, 5V tolerance, lower power supply, individual I/O configuration, and smaller packaging. It provides a simple solution when additional I/O is needed for ACPI power switches, sensors, push buttons, LEDs, fans, etc.
The PI4IOE5V9521 consists of a 2-bit configuration register to configure the I/Os as either inputs or outputs, and a 2-bit polarity register to change the polarity of the input port...
