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PI4IOE5V9555 Datasheet(PDF) 1 Page - Pericom Semiconductor Corporation

Part # PI4IOE5V9555
Description  16-bit I2C-bus and SMBus I/O port with interrupt
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Manufacturer  PERICOM [Pericom Semiconductor Corporation]
Direct Link  http://www.pericom.com
Logo PERICOM - Pericom Semiconductor Corporation

PI4IOE5V9555 Datasheet(HTML) 1 Page - Pericom Semiconductor Corporation

  PI4IOE5V9555 Datasheet HTML 1Page - Pericom Semiconductor Corporation  
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Product Databrief
NEW PRODUCT BRIEF
www.pericom.com | 1-408-232-9100
PI4IOE5V9555
16-bit I2C-bus and SMBus I/O port with interrupt
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Operation power supply voltage from 2.3V to 5.5V
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16-bit I/O pins which can be programmed as Input or
Output
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5V tolerant I/Os
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Polarity inversion register
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Active LOW interrupt output
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Low current consumption
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0Hz to 400KHz clock frequency
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Noise filter on SCL/SDA inputs
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Power-on reset
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ESD protection (4KV HBM and 1KV CDM)
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Latch-up tested (exceeds 100mA)
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Offered in two different packages:
- TSSOP-24 and TQFN 4x4-24
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


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