PCA9534BS3

更新时间： 2024-12-01 10:17:07

品牌	Logo	应用领域
恩智浦 - NXP		/
页数	文件大小	规格书
25页	155K
描述
8-bit I2C-bus and SMBus low power I/O port with interrupt

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PCA9534BS3 数据手册

PCA9534

8-bit I²C-bus and SMBus low power I/O port with interrupt

Rev. 03 — 6 November 2006

Product data sheet

1. General description

The PCA9534 is a 16-pin CMOS device that provide 8 bits of General Purpose parallel

Input/Output (GPIO) expansion for I²C-bus/SMBus applications and was developed to

enhance the NXP Semiconductors family of I²C-bus I/O expanders. The improvements

include higher drive capability, 5 V I/O tolerance, lower supply current, individual I/O

conﬁguration, 400 kHz clock frequency, and smaller packaging. I/O expanders provide a

simple solution when additional I/O is needed for ACPI power switches, sensors,

push buttons, LEDs, fans, etc.

The PCA9534 consists of an 8-bit Conﬁguration register (Input or Output selection); 8-bit

Input register, 8-bit Output register and an 8-bit Polarity Inversion register (active HIGH or

active LOW operation). The system master can enable the I/Os as either inputs or outputs

by writing to the I/O conﬁguration bits. The data for each input or output is kept in the

corresponding Input or Output register. The polarity of the Input Port register can be

inverted with the Polarity Inversion register. All registers can be read by the system

master. Although pin-to-pin and I²C-bus address compatible with the PCF8574 series,

software changes are required due to the enhancements and are discussed in Application

Note AN469.

The PCA9534 is identical to the PCA9554 except for the removal of the internal I/O pull-up

resistor which greatly reduces power consumption when the I/Os are held LOW.

The PCA9534 open-drain interrupt output is activated when any input state differs from its

corresponding input port register state and is used to indicate to the system master that

an input state has changed. The power-on reset sets the registers to their default values

and initializes the device state machine.

Three hardware pins (A0, A1, A2) vary the ﬁxed I²C-bus address and allow up to eight

devices to share the same I²C-bus/SMBus.

2. Features

I 8-bit I²C-bus GPIO

I Operating power supply voltage range of 2.3 V to 5.5 V

I 5 V tolerant I/Os

I Polarity Inversion register

I Active LOW interrupt output

I Low standby current

I Noise ﬁlter on SCL/SDA inputs

I No glitch on power-up

I Internal power-on reset

12 3 4 5 6 7...25

中文翻译

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PCA9534BS3 替代型号

型号	品牌	替代类型	描述	数据表
PCF8574RGTRG4	TI	功能相似	REMOTE 8-BIT I/O EXPANDER FOR I2C BUS
PCA9534RGTR	TI	功能相似	REMOTE 8-BIT I2C AND SMBus LOW-POWER I/O EXPANDER WITH INTERRUPT OUTPUT AND CONFIGURATION

与PCA9534BS3相关器件

型号	品牌	获取价格	描述	数据表
PCA9534BS3,118	NXP	获取价格	PCA9534 - 8-bit I2C-bus and SMBus low power I/O port with interrupt QFN 16-Pin
PCA9534BS-T	NXP	获取价格	IC 8 I/O, PIA-GENERAL PURPOSE, PQCC16, 4 X 4 MM, 0.85 MM HEIGHT, PLASTIC, MO-220, SOT629-1
PCA9534D	NXP	获取价格	8-bit I2C and SMBus, low power I/O port with interrupt
PCA9534D,118	NXP	获取价格	PCA9534 - 8-bit I2C-bus and SMBus low power I/O port with interrupt SOP 16-Pin
PCA9534DB	TI	获取价格	REMOTE 8-BIT I2C AND SMBus LOW-POWER I/O EXPANDER WITH INTERRUPT OUTPUT AND CONFIGURATION
PCA9534DBG4	TI	获取价格	REMOTE 8-BIT I2C AND SMBus LOW-POWER I/O EXPANDER WITH INTERRUPT OUTPUT AND CONFIGURATION
PCA9534DBQR	TI	获取价格	REMOTE 8-BIT I2C AND SMBus LOW-POWER I/O EXPANDER WITH INTERRUPT OUTPUT AND CONFIGURATION
PCA9534DBR	TI	获取价格	REMOTE 8-BIT I2C AND SMBus LOW-POWER I/O EXPANDER WITH INTERRUPT OUTPUT AND CONFIGURATION
PCA9534DBRG4	TI	获取价格	REMOTE 8-BIT I2C AND SMBus LOW-POWER I/O EXPANDER WITH INTERRUPT OUTPUT AND CONFIGURATION
PCA9534DBT	TI	获取价格	REMOTE 8-BIT I2C AND SMBus LOW-POWER I/O EXPANDER WITH INTERRUPT OUTPUT AND CONFIGURATION

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