PCA9554ATS: 带有中断的8位I2C总线和SMBus I/O端口

PCA9554和PCA9554A是16引脚CMOS器件,为I²C总线/SMBus应用提供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。改进内容包括更高的驱动能力、5 V I/O容限、更低的供电电流、独立的I/O配置、400 kHz时钟频率和更小的封装。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。

PCA9554/PCA9554A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读取寄存器的极性。系统主器件可读取所有寄存器。虽然引脚对引脚和I²C总线地址都兼容PCF8574系列,但是因增强功能而需要软件更改,这在应用注意事项AN469中讨论。

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PCA9554/PCA9554A开漏中断输出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。

三个硬件引脚(A0、A1、A2)会改变固定I²C总线地址,因而允许最多八个器件共享相同的I²C总线/SMBus。除允许相同I²C总线/SMBus上存在最多十六个这些器件(各八个)的固定I²C总线地址不同外,PCA9554A与PCA9554完全相同。

PCA9554ATS: 产品结构框图
Outline 3d SOT266-1
数据手册 (1)
名称/描述Modified Date
8-bit I2C-bus and SMBus I/O port with interrupt (REV 9.0) PDF (585.0 kB) PCA9554_9554A [English]19 Mar 2013
应用说明 (7)
名称/描述Modified Date
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
PCA9564 - I2C-bus controller (REV 1.0) PDF (352.0 kB) AN10148 [English]22 Nov 2004
PCA9564 Evaluation Board (REV 1.0) PDF (2.0 MB) AN10149 [English]19 Aug 2004
I2C manual (REV 1.0) PDF (4.2 MB) AN10216 [English]27 Mar 2003
I2C 2002-1A Evaluation Board (REV 2.0) PDF (2.2 MB) AN10146 [English]26 Feb 2003
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 (6)
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
Development Tools for ARM-based microcontrollers (REV 2.1) PDF (374.0 kB) 75017388 [English]18 Apr 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
Evaluate the I2C-bus with a comprehensive kit; NXP® I2C 2002-1A evaluation board kits OM6285 and OM6278 (REV 1.0) PDF (1.8 MB) 75016531 [English]01 Jul 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
Low-power GPIO expanders for portable applications; NXP® 8/16-bit I2C/SMBus GPIO expanders... (REV 1.0) PDF (239.0 kB) 75016020 [English]01 Jun 2007
封装信息 (1)
名称/描述Modified Date
plastic shrink small outline package; 20 leads; body width 4.4 mm (REV 1.0) PDF (329.0 kB) SOT266-1 [English]08 Feb 2016
包装 (1)
名称/描述Modified Date
SSOP20; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or... (REV 1.0) PDF (222.0 kB) SOT266-1_118 [English]15 Apr 2013
报告或演示文稿 (1)
名称/描述Modified Date
design_con_2003_tecforum_i2c_b_1 (REV 0.1) PDF (4.2 MB) DESIGN_CON_2003_TECFORUM_I2C_B_1 [English]27 Jan 2003
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
Design Support
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
PCA9554ATSActive82.35.5Y10.252510010YTotem poleY10040043.56SSOP20SOT266-1-40~858
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
PCA9554ATSSOT266-1SSOP-TSSOP-VSO-WAVEReel 13" Q1/T1ActivePCA9554ATS,118 (9352 767 72118)PA9554APCA9554ATSweek 13, 20050.02.05E811
Bulk PackActivePCA9554ATS,112 (9352 767 72112)PA9554APCA9554ATSweek 13, 20050.02.05E811
8-bit I2C-bus and SMBus I/O port with interrupt pca9554_pca9554a
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
PCA9564 - I2C-bus controller PCA9531
PCA9564 Evaluation Board PMBTA92
I2C manual se98apw
I2C 2002-1A Evaluation Board lm75a
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
Development Tools for ARM-based microcontrollers PCA9531
Versatile, easy-to-use GPIO expanders; NXP® 4/8/16-bit I2C/SMBus GPIO expanders PCA9536/54/54A/55 pcf8570p
Evaluate the I2C-bus with a comprehensive kit; NXP® I2C 2002-1A evaluation board kits OM6285 and OM6278 lm75a
Create smarter, more efficient white goods; An industry-leading portfolio of cost-effective, power-saving solutions for... PMEG6010CE_AUTOMOTIVE
Low-power GPIO expanders for portable applications; NXP® 8/16-bit I2C/SMBus GPIO expanders... pcf8570p
design_con_2003_tecforum_i2c_b_1 lm75a
Expert mode sample code for 8-bit Totem Pole PCAL9554BPW
Expert mode sample code for PCA9554A and PCA9554C PCA9554CPW
plastic shrink small outline package; 20 leads; body width 4.4 mm SA636
SSOP-TSSOP-VSO-WAVE LPC1114FDH28
SSOP20; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or... SA636
PCA9554_PCA9554A
SA636