Pericom Semiconductor PI4IOE5V9521
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.| Part No. | PI4IOE5V9521 |
|---|---|
| Datasheet | PI4IOE5V9521 Download |
| Manufacturer |  Pericom Semiconductor |
| Description | 2-bit I2C-bus and SMBus low power I/O port |
| Buy | Stock & Price |
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 ConfigurationDESCRIPTION
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 register data. The data for each input or output is kept in the corresponding Input port or Output port register. All registers can be read by the system master. The PI4IOE5V9521 open-drain interrupt output (INT) is activated when any input state is differed from its corresponding Input Port register and is used to indicate the system master that an input state has changed. The power-on reset sets the registers to their default values and initializes the device state machine.
