PI4IOE5V9673 Datasheet, PDF (1/14 Pages) Pericom Semiconductor Corporation – reset Description

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Features
PI4IOE5V9673
Remote 16-bit I/O expander for Fm+ I²C-bus with interrupt and reset
Description
 Operation power supply voltage from 2.3V to 5.5V
 16-bit remote I/O pins that default to inputs at power-
up
 1 MHz I²C-bus interface
 Compliant with the I²C-bus Fast and Standard modes
 5.5V tolerant I/Os
 SDA with 30 mA sink capability for 4000 pF buses
 Latched outputs with 25 mA sink capability for
directly driving LEDs
 Total package sink capability of 400 mA
 Active LOW open-drain interrupt output
 Low standby current
 16 programmable slave addresses using 2 address
pins
 ESD protection (4KV HBM and 1KV CDM)
 Latch-up tested (exceeds 100mA)
 Offered in three different packages: TSSOP-24 and
TQFN 4x4-24
The PI4IOE5V9673 provides general purpose
remote I/O expansion for most microcontroller families
via the two-line bidirectional bus (I²C-bus) and is a part
of the Fast-mode Plus family.
The PI4IOE5V9673 provides higher Fast-mode Plus
(Fm+) I²C-bus speeds (1 MHz versus 400 kHz) so that
the output can support PWM dimming of LEDs,
higheI2C-bus drive (30 mA) so that many more devices
can be on the bus without the need for bus buffers, high
total package sink capacity (400 mA) that supports
having all 25 mA LEDs on at the same time and more
device addresses (16) are available to allow many more
devices on the bus without address conflicts.
The device consists of a 16-bit quasi-bidirectional
port and an I²C-bus interface. The PI4IOE5V9673 has a
low current consumption and includes latched outputs
with high current drive capability for directly driving
LEDs.
It also possesses an interrupt line (INT) which can be
connected to the interrupt logic of the microcontroller.
By sending an interrupt signal on this line, the remote
I/O can inform the microcontroller if there is incoming
data on its ports without having to communicate via the
I2C-bus. The internal Power-On Reset (POR) or
software reset sequence initializes the I/Os as inputs.
Pin Configuration
Figure 1: TSSOP-24 (Top View)
2016-01-0022
Figure 2: TQFN 4x4-24 (Top View)
PT0553-4
02/15/16
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