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Pericom Semiconductor

PI4IOE5V9557 Datasheet Preview

PI4IOE5V9557 Datasheet

8-bit I2C-bus and SMBus I/O port

No Preview Available !

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PI4IOE5V9557
8-bit I2C-bus and SMBus I/O port with reset
Features
Operation power supply voltage from 2.3V to 5.5V
8-bit I2C-bus GPIO with interrupt and reset
5V tolerant I/Os
Polarity inversion register
Active LOW Reset Pin
Low current consumption
0Hz to 400KHz clock frequency
Noise filter on SCL/SDA inputs
Power-on reset
ESD protection (4KV HBM and 1KV CDM)
Offered in three different packages:SOIC-16,
TSSOP-16 and TQFN 4x4-16
Description
The PI4IOE5V9557 provide 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 PI4IOE5V9557 consists of an 8-bit register to
configure the I/Os as either inputs or outputs, and an 8-
bit polarity register to change the polarity of the input
port register. 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 power-on reset sets the registers to their default
values and initializes the device state machine. The
RESET pin causes the same reset/default I/O input
configuration to occur without de-powering the device,
holding the registers and I2C-bus state machine in their
default state until the RESET input is once again HIGH.
Three hardware pins (A0, A1, A2) vary the fixed
I2C-bus address and allow up to eight devices to share
the same I2C-bus/SMBus.
Pin Configuration
Figure 1: SOIC-16/TSSOP-16 ( Top View )
Figure 2: TQFN 4x4-16 ( Top view )
2015-07-0028
PT0552-2
8/18/15
1




Pericom Semiconductor

PI4IOE5V9557 Datasheet Preview

PI4IOE5V9557 Datasheet

8-bit I2C-bus and SMBus I/O port

No Preview Available !

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Pin Description
Table 1: Pin Description
Pin
SO16 TSSOP16 TQFN16
1 15
Name
SCL
2 16 SCA
3 1 A0
4 2 A1
5 3 A2
6 4 IO0
7 5 IO1
8 6 GND
9 7 IO2
10 8 IO3
11 9 IO4
12 10 IO5
13 11 IO6
14 12 IO7
15 13 RESET
16 14 VCC
* I = Input; O = Output; P = Power; G = Ground
PI4IOE5V9557
8-bit I2C-bus and SMBus I/O port with reset
|||||||||||||||||
Type
I
I
I
I
I
I/O
I/O
G
I/O
I/O
I/O
G
I/O
I/O
I
P
Description
Serial clock line
Serial data line
Address input 0
Address input 1
Address input 2
input/output 0 (open-drain)
input/output 1
Supply ground
input/output 2
input/output 3
input/output 4
input/output 5
input/output 6
input/output 7
Active LOW reset input
Supply voltage
2015-07-0028
PT0552-2
8/18/15
2


Part Number PI4IOE5V9557
Description 8-bit I2C-bus and SMBus I/O port
Maker Pericom Semiconductor
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Pericom Semiconductor





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