PI4IOE5V9675 Datasheet, PDF (1/16 Pages) Pericom Semiconductor Corporation – interrupt Description

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Features
PI4IOE5V9675
Remote 16-bit I/O expander for Fm+ I²C-bus with interrupt
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
 64 programmable slave addresses using 3 address
pins
 ESD protection (4KV HBM and 1KV CDM)
 Latch-up tested (exceeds 100mA)
 Offered in two different packages: TSSOP-24 and
TQFN 4x4-24
The PI4IOE5V9675 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 PI4IOE5V9675 provides higher Fast-mode Plus
(Fm+) I²C-bus speeds (1 MHz versus 400 kHz) so that
the output can support PWM dimming of LEDs, high
I²C-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 (64) 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 PI4IOE5V9675 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)
2016-06-0008
Figure 2:TQFN 4x4-24(Top View)
PT0555-3
1
08/04/16