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Pericom Semiconductor

PI4IOE5V9521 Datasheet Preview

PI4IOE5V9521 Datasheet

2-bit I2C-bus and SMBus low power I/O port

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PI4IOE5V9521
2-bit I2C-bus and SMBus low power I/O port with interrupt and reset
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 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.
The Reset pin (Reset) causes the same
reset/initialization to occur without de-powering the
device.
Figure 1. UQFN 1.6 x 1.6-8
2016-02-0002
1
PT0564-1
03/29/16




Pericom Semiconductor

PI4IOE5V9521 Datasheet Preview

PI4IOE5V9521 Datasheet

2-bit I2C-bus and SMBus low power I/O port

No Preview Available !

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Pin Description
Table 1. Pin description
Pin Name
1 P0
Type
I/O
2 P1
I/O
3 GND
G
4 RESET
I
5 INT
O
6 SCL
I
7 SDA
I/O
8 VCC
P
* I = Input; O = Output; P = Power; G = Ground
PI4IOE5V9521
2-bit I2C-bus and SMBus
low power I/O port with interrupt and reset
|||||||||||||||||
Input/Output 0
Description
Input/Output1
Supply ground
Reset pin
Interrupt output (open-drain)
Serial clock line
Serial data line
Power supply
2016-02-0002
PT0564-1
03/29/16
2


Part Number PI4IOE5V9521
Description 2-bit I2C-bus and SMBus low power I/O port
Maker Pericom Semiconductor
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PI4IOE5V9521 Datasheet PDF






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