PCA9672 2 Remote 8-bit I/O expander for Fm+ I C-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 2 bidirectional I C-bus (serial clock (SCL), serial data (SDA)). 2 The devices consist of eight quasi-bidirectional ports, 1 MHz 30 mA drive I C-bus interface, three hardware address inputs and a reset input operating between 2.3 V and 2 5.5V. 1MHz I C-bus Fast-mode Plus (Fm+) can support PWM dimming of LEDs, and 2 higher I C-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 2 the same I C-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 2 polling the input register via the I C-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 2 I C-bus to parallel port expander 2 2 1MHz I C-bus interface (Fast-mode Plus I C-bus) Operating supply voltage 2.3 V to 5.5 V with 5.5 V tolerant I/Os held to V with DD 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 outputPCA9672 NXP Semiconductors 2 Remote 8-bit I/O expander for Fm+ I C-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 Package marking Name Description Version PCA9672BS 672 HVQFN1 plastic thermal enhanced very thin quad flat package no leads SOT758-1 6 16 terminals body 3 3 0.85 mm 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 Package Packing method Minimum Temperature range part number order quantity PCA9672BS PCA9672BS,118 HVQFN16 Reel 13 Q1/T1 *standard mark SMD 6000 T = 40 C to +85 C amb = 40 C to +85 C PCA9672D PCA9672D,512 SO16 Standard marking * tube dry pack 1920 T amb = 40 C to +85 C PCA9672D,518 SO16 Reel 13 Q1/T1 *standard mark SMD 1000 T amb dry pack PCA9672PW PCA9672PW,112 TSSOP16 Standard marking * ICs tube - 2400 T = 40 C to +85 C amb DSC dry pack PCA9672PW,118 TSSOP16 Reel 13 Q1/T1 *standard mark SMD 2500 T = 40 C to +85 C amb PCA9672 All information provided in this document is subject to legal disclaimers. NXP B.V. 2013. All rights reserved. Product data sheet Rev. 3 27 May 2013 2 of 36