PI4IOE5V9538 Datasheet, PDF (1/1 Pages) Pericom Semiconductor Corporation – interrupt and reset

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PI4IOE5V9538
8-bit I2C-bus and SMBus low power I/O port with interrupt and reset
The PI4IOE5V9538 provides 8 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 PI4IOE5V9538 consists of an 8-bit register to configure
the I/Os as either inputs or outputs, and two 8-bit polarity
registers 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 PI4IOE5V9538 open-drain interrupt output (INT) is activated
when any input state 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. The Reset pin causes the
same reset/initialization to occur without de-powering the device.
Two hardware pins (A0 and A1) vary the fixed I2C-bus address
and allow up to four devices to share the same I2C-bus/SMBus.
Features
ÎÎOperation power supply voltage from 2.3V to 5.5V
ÎÎ8-bit I2C-bus GPIO with interrupt and reset
ÎÎ5V tolerant I/Os
ÎÎActive Low interrupt output
ÎÎActive Low reset input
ÎÎPolarity inversion register
ÎÎLow current consumption
ÎÎ0Hz to 400KHz clock frequency
ÎÎNoise filter on SCL/SDA inputs
ÎÎPower-on reset
ÎÎESD protection (4KV HBM and 1KV CDM)
ÎÎOffered in three different packages:
- SOIC-16, TSSOP-16, TQFN 4x4-16
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