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PCA9672BS

更新时间： 2024-11-14 05:59:47

品牌	Logo	应用领域
恩智浦 - NXP		/
页数	文件大小	规格书
27页	164K
描述
Remote 8-bit I/O expander for Fm+ I2C-bus with interrupt and reset

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PCA9672BS 数据手册

PCA9672

Remote 8-bit I/O expander for Fm+ I²C-bus with interrupt and

reset

Rev. 02 — 6 July 2007

Product data sheet

1. General description

The PCA9672 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 PCA9672 is a drop-in upgrade for the PCF8574 providing higher Fast-mode Plus

(Fm+) I²C-bus speeds (1 MHz versus 400 kHz) so that the output can support PWM

dimming of LEDs, higher I²C-bus drive (30 mA versus 3 mA) so that many more devices

can be on the bus without the need for bus buffers, higher total package sink capacity

(200 mA versus 100 mA) that supports having all LEDs on at the same time and more

device addresses (16 versus 8) are available to allow many more devices on the bus

without address conﬂicts.

The difference between the PCA9672 and the PCF8574 is that the A2 address pin is

replaced by the RESET input on the PCA9672.

The device consists of an 8-bit quasi-bidirectional port and an I²C-bus interface. The

PCA9672 has low current consumption and include latched outputs with 25 mA high

current drive capability for directly driving LEDs.

The PCA9672 possesses an interrupt line (INT) that 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), hardware reset pin (RESET), or Software Reset

sequence initializes the I/Os as inputs.

2. Features

I 1 MHz I²C-bus interface

I Compliant with the I²C-bus Fast and Standard modes

I SDA with 30 mA sink capability for 4000 pF buses

I 2.3 V to 5.5 V operation with 5.5 V tolerant I/Os

I 8-bit remote I/O pins that default to inputs at power-up

I Latched outputs with 25 mA sink capability for directly driving LEDs

I Total package sink capability of 200 mA

I Active LOW open-drain interrupt output

I 16 programmable slave addresses using 2 address pins

I Readable device ID (manufacturer, device type, and revision)

12 3 4 5 6 7...27

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与PCA9672BS相关器件

型号	品牌	获取价格	描述	数据表
PCA9672BS,118	NXP	获取价格	PCA9672 - Remote 8-bit I/O expander for Fm+
PCA9672D	NXP	获取价格	Remote 8-bit I/O expander for Fm I2C-bus with interrupt and reset
PCA9672D,518	NXP	获取价格	PCA9672 - Remote 8-bit I/O expander for Fm+
PCA9672PW	NXP	获取价格	Remote 8-bit I/O expander for Fm+ I2C-bus with interrupt and reset
PCA9672PW,112	NXP	获取价格	PCA9672 - Remote 8-bit I/O expander for Fm+
PCA9672PW,118	NXP	获取价格	PCA9672 - Remote 8-bit I/O expander for Fm+
PCA9673	NXP	获取价格	Remote 16-bit I/O expander for Fm+ I2C-bus with interrupt and reset
PCA9673BQ	NXP	获取价格	Remote 16-bit I/O expander for Fm+ I2C-bus with interrupt and reset
PCA9673BS	NXP	获取价格	Remote 16-bit I/O expander for Fm+ I2C-bus with interrupt and reset
PCA9673BS,118	NXP	获取价格	PCA9673 - Remote 16-bit I/O expander for Fm+ I2C-bus with interrupt and reset QFN 24-Pin

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