I/O expander. PCA9672D Datasheet

PCA9672D expander. Datasheet pdf. Equivalent

PCA9672D Datasheet
Recommendation PCA9672D Datasheet
Part PCA9672D
Description Remote 8-bit I/O expander
Feature PCA9672D; PCA9672 Remote 8-bit I/O expander for Fm+ I2C-bus with interrupt and reset Rev. 3 — 27 May 2013 P.
Manufacture NXP
Datasheet
Download PCA9672D Datasheet




NXP PCA9672D
PCA9672
Remote 8-bit I/O expander for Fm+ I2C-bus with interrupt and
reset
Rev. 3 — 27 May 2013
Product data sheet
1. General description
The PCA9672 provides general-purpose remote I/O expansion via the two-wire
bidirectional I2C-bus (serial clock (SCL), serial data (SDA)).
The devices consist of eight quasi-bidirectional ports, 1 MHz 30 mA drive I2C-bus
interface, three hardware address inputs and a reset input operating between 2.3 V and
5.5 V. 1 MHz I2C-bus Fast-mode Plus (Fm+) can support PWM dimming of LEDs, and
higher I2C-bus drive 30 mA allows more devices to be on the bus without the need for bus
buffers. The quasi-bidirectional port can be independently assigned as an input to monitor
interrupt status or keypads, or as an output to activate indicator devices such as LEDs.
The system master can read from the input port or write to the output port through a single
register.
The low current consumption of 2.5 A (typical, static) is great for mobile applications and
the latched output ports have 25 mA high current sink drive capability for directly driving
LEDs.
The PCA9672 has two hardware address pins, allowing sixteen of each device to be on
the same I2C-bus without the need for bus buffers, so there can be supporting up to
128 I/Os (for example, 128 LEDs).
The active LOW open-drain interrupt output (INT) can be connected to the interrupt logic
of the microcontroller and is activated when any input state differs from its corresponding
input port register state. It is used to indicate to the microcontroller that an input state has
changed and the device needs to be interrogated without the microcontroller continuously
polling the input register via the I2C-bus.
The internal Power-On Reset (POR) and active LOW hardware reset pin (RESET)
initialize the I/Os as inputs with a weak internal pull-up 100 A current source.
2. Features and benefits
I2C-bus to parallel port expander
1 MHz I2C-bus interface (Fast-mode Plus I2C-bus)
Operating supply voltage 2.3 V to 5.5 V with 5.5 V tolerant I/Os held to VDD with
100 A current source
8-bit remote I/O pins that default to inputs at power-up
Latched outputs with 25 mA sink capability directly drive LEDs
Total package sink capability of 200 mA
Active LOW reset input
Active LOW open-drain interrupt output



NXP PCA9672D
NXP Semiconductors
PCA9672
Remote 8-bit I/O expander for Fm+ I2C-bus with interrupt and reset
Sixteen programmable slave addresses using two address pins
Readable device ID (manufacturer, device type, and revision)
Software reset
Low standby current (2.5 A typical)
40 C to +85 C operation
ESD protection exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per
JESD22-C101
Latch-up testing is done to JEDEC standard JESD78 which exceeds 100 mA
Packages offered: SO16, TSSOP16 and HVQFN16
3. Applications
LED signs and displays
Servers
Keypads
Industrial control
Medical equipment
PLCs
Cellular telephones
Mobile devices
Gaming machines
Instrumentation and test measurement
4. Ordering information
Table 1. Ordering information
Type number Topside
marking
Package
Name Description
Version
PCA9672BS 672
HVQFN1 plastic thermal enhanced very thin quad flat package; no leads;
6
16 terminals; body 3 3 0.85 mm
SOT758-1
PCA9672D PCA9672D SO16
plastic small outline package; 16 leads; body width 7.5 mm
SOT162-1
PCA9672PW PCA9672 TSSOP16 plastic thin shrink small outline package; 16 leads; body width 4.4 mm SOT403-1
4.1 Ordering options
Table 2. Ordering options
Type number Orderable
part number
Package Packing method
Minimum Temperature range
order
quantity
PCA9672BS
PCA9672D
PCA9672BS,118 HVQFN16 Reel 13” Q1/T1 *standard mark SMD 6000
PCA9672D,512 SO16
Standard marking * tube dry pack 1920
PCA9672D,518 SO16
Reel 13” Q1/T1 *standard mark SMD 1000
dry pack
Tamb = 40 C to +85 C
Tamb = 40 C to +85 C
Tamb = 40 C to +85 C
PCA9672PW PCA9672PW,112 TSSOP16 Standard marking * IC’s tube -
DSC dry pack
2400
Tamb = 40 C to +85 C
PCA9672PW,118 TSSOP16 Reel 13” Q1/T1 *standard mark SMD 2500
Tamb = 40 C to +85 C
PCA9672
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 27 May 2013
© NXP B.V. 2013. All rights reserved.
2 of 36



NXP PCA9672D
NXP Semiconductors
5. Block diagram
PCA9672
Remote 8-bit I/O expander for Fm+ I2C-bus with interrupt and reset
INT
AD0
AD1
SCL
SDA
PCA9672
LP FILTER
INPUT
FILTER
I2C-BUS
CONTROL
INTERRUPT
LOGIC
SHIFT
REGISTER 8 BITS
I/O
PORT
P0 to P7
RESET
VDD
VSS
POWER-ON
RESET
Fig 1. Block diagram of PCA9672
write pulse
read pulse
002aac321
write pulse
data from Shift Register
power-on reset
DQ
FF
CI
S
Itrt(pu)
IOH
100 µA
IOL
VDD
P0 to P7
VSS
read pulse
data to Shift Register
DQ
FF
CI
S
to interrupt logic
002aah521
Fig 2. Simplified schematic diagram of P0 to P7
PCA9672
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 27 May 2013
© NXP B.V. 2013. All rights reserved.
3 of 36







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