PI4IOE5V9555 Datasheet, PDF (1/1 Pages) Pericom Semiconductor Corporation – 16-bit I2C-bus and SMBus I/O port with interrupt

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PI4IOE5V9555
16-bit I²C-bus and SMBus I/O port with interrupt
The PI4IOE5V9555 is an I2C-bus I/O expander that provides 16
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 PI4IOE5V9555 consists of two 8-bit configuration registers
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 PI4IOE5V9555 open-drain interrupt output is activated
and indicate to the system when any input state has changed.
The power-on reset sets the registers to their default values and
initializes the device state machine.
Three input pins (A0, A1, A2) can select I2C-bus address of
PI4IOE5V9555 from the eight preset address. It allows up to
eight PI4IOE5V9555 to share the same I2C-bus/SMBus and
provide maximum 128 I/Os.
Features
ÎÎOperation power supply voltage from 2.3V to 5.5V
ÎÎ16-bit I/O pins which can be programmed as Input or
Output
ÎÎ5V tolerant I/Os
ÎÎPolarity inversion register
ÎÎActive LOW interrupt output
ÎÎLow current consumption
ÎÎ0Hz to 400KHz clock frequency
ÎÎNoise filter on SCL/SDA inputs
ÎÎPower-on reset
ÎÎESD protection (4KV HBM and 1KV CDM)
ÎÎLatch-up tested (exceeds 100mA)
ÎÎOffered in two different packages:
- TSSOP-24 and TQFN 4x4-24
www.pericom.com | 1-408-232-9100