PCA9538PW: 带有中断和复位的8位I2C总线和SMBus低功率I/O端口

PCA9538是一款16引脚CMOS器件,为I²C总线/SMBus应用提供带中断和复位的8位通用并行输入/输出(GPIO)扩展,是为增强NXP Semiconductors的I²C总线I/O扩展器系列而开发的。ACPI电源开关、传感器、按钮、LED、风扇等需要额外的I/O时,I/O扩展器提供简易的解决方案。

PCA9538由8位配置寄存器(输入或输出选择)、8位输入端口寄存器、8位输出端口寄存器和8位极性反转寄存器(高电平有效或低电平有效操作)组成。系统主器件可通过写入I/O配置位将I/O用作输入或输出。每个输入或输出的数据保留在对应的输入端口或输出端口寄存器中。通过极性反转寄存器可反转输入端口寄存器的极性。系统主器件可读取所有寄存器。

除取消I/O保持低电平时极大降低功耗的内部I/O上拉电阻、用1替换A2以及地址范围不同外,PCA9538与PCA9554完全相同。

当任何输入状态与其对应的输入端口寄存器状态不同时,会激活PCA9538开漏中断输出(1)并用于通知系统主器件输入状态已改变。上电复位会将寄存器设为其默认值并初始化器件状态机。1引脚可引发相同的复位/初始化而无需使器件断电。

两个硬件引脚(A0和A1)会改变固定I²C总线地址,因而允许最多四个器件共享相同的I²C总线/SMBus。

PCA9538PW: 产品结构框图
Outline 3d SOT403-1
数据手册 (1)
名称/描述Modified Date
8-bit I2C-bus and SMBus low power I/O port with interrupt and reset (REV 7.0) PDF (426.0 kB) PCA9538 [English]26 Nov 2014
应用说明 (4)
名称/描述Modified Date
Driving stepper motors using NXP® I2C-bus GPIO expanders (REV 2.0) PDF (275.0 kB) AN10814 [English]24 Oct 2011
PCA9500/PCA9501 provides simple card maintenance and control using I²C-bus (REV 1.0) PDF (90.0 kB) AN256 [English]23 Mar 2009
Level shifting techniques in I2C-bus design (REV 1.0) PDF (52.0 kB) AN10441 [English]20 Jun 2007
I2C/SMBus general purpose I/O expanders (REV 2.0) PDF (294.0 kB) AN469 [English]20 Jan 2005
用户指南 (4)
名称/描述Modified Date
I2C-bus specification and user manual (REV 6.0) PDF (1.4 MB) UM10204 [English]28 Apr 2014
I2C-bus specification and user manual (REV 5.0) PDF (1.6 MB) UM10204_JA [English]03 Apr 2013
PCA9698 demonstration board OM6281 (REV 1.0) PDF (558.0 kB) UM10267 [English]26 Sep 2008
I2C Demonstration Board 2005-1 Quick Start Guide (REV 1.0) PDF (261.0 kB) UM10206 [English]13 Jun 2006
手册 (3)
名称/描述Modified Date
NXP® I2C-bus solutions 2014: Smart, simple solutions for the 12 most common design concerns (REV 1.0) PDF (3.5 MB) 75017540 [English]01 Aug 2014
Versatile, easy-to-use GPIO expanders; NXP® 4/8/16-bit I2C/SMBus GPIO expanders PCA9536/54/54A/55 (REV 1.0) PDF (319.0 kB) 75016535 [English]01 Aug 2008
Create smarter, more efficient white goods; An industry-leading portfolio of cost-effective, power-saving solutions for... (REV 1.0) PDF (1.1 MB) 75016543 [English]01 Jun 2008
封装信息 (1)
名称/描述Modified Date
plastic thin shrink small outline package; 16 leads; body width 4.4 mm (REV 1.0) PDF (300.0 kB) SOT403-1 [English]08 Feb 2016
包装 (1)
名称/描述Modified Date
TSSOP16; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or... (REV 1.0) PDF (218.0 kB) SOT403-1_118 [English]08 Apr 2013
支持信息 (1)
名称/描述Modified Date
Footprint for wave soldering (REV 1.0) PDF (16.0 kB) SSOP-TSSOP-VSO-WAVE [English]08 Oct 2009
IBIS
订购信息
型号状态No of bitsVDD [min] (V)VDD [max] (V)Over volt tolerantNo of suppliesStandby current [typ] (µA)Max Sink Current per bit (mA)Max Sink Current, per package (mA)Source Current per bit (mA)Interrupt output pinReset input pinOutput modeInput mode: invert optionInternal pull-up resistor per bit (kOhm)I2C-bus (kHz)Footprint body and leads (mm2)Package namePackage versionOperating Temperature (Cel)No of AddressesRemark
PCA9538PW/Q900Active82.35.5Y10.252510010YYTotem poleY40033.66TSSOP16SOT403-1-40~854
PCA9538PWActive82.35.5Y10.252510010YYTotem poleY40033.66TSSOP16SOT403-1-40~854
封装环保信息
产品编号封装说明Outline Version回流/波峰焊接包装产品状态部件编号订购码 (12NC)Marking化学成分RoHS / 无铅 / RHF无铅转换日期EFRIFR(FIT)MTBF(小时)MSLMSL LF
PCA9538PWSOT403-1SSOP-TSSOP-VSO-WAVEReel 13" Q1/T1ActivePCA9538PW,118 (9352 774 19118)PCA9538PCA9538PWweek 13, 20050.02.05E811
Bulk PackActivePCA9538PW,112 (9352 774 19112)PCA9538PCA9538PWweek 13, 20050.02.05E811
PCA9538PW/Q900SOT403-1SSOP-TSSOP-VSO-WAVEReel 13" Q1/T1ActivePCA9538PW/Q900,118 (9352 968 62118)PCA9538PCA9538PW/Q900Always Pb-free0.02.05E811
8-bit I2C-bus and SMBus low power I/O port with interrupt and reset pca9538
Driving stepper motors using NXP® I2C-bus GPIO expanders pca9698
PCA9500/PCA9501 provides simple card maintenance and control using I²C-bus PCA9553
Level shifting techniques in I2C-bus design pca9685pw
I2C/SMBus general purpose I/O expanders pcf8575ts
I2C-bus specification and user manual pca9685pw
I2C-bus specification and user manual pca9685pw
PCA9698 demonstration board OM6281 PCA9553
I2C Demonstration Board 2005-1 Quick Start Guide pca9685pw
NXP® I2C-bus solutions 2014: Smart, simple solutions for the 12 most common design concerns pca9685pw
Versatile, easy-to-use GPIO expanders; NXP® 4/8/16-bit I2C/SMBus GPIO expanders PCA9536/54/54A/55 pcf8570p
Create smarter, more efficient white goods; An industry-leading portfolio of cost-effective, power-saving solutions for... PMEG6010CE_AUTOMOTIVE
PCA9538 IBIS model PCA9538PW
SOT403-1 LPC812M101JDH16
SSOP-TSSOP-VSO-WAVE LPC1114FDH28
Reel 13" Q1/T1 LPC812M101JDH16
PCA9538
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