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。
名称/描述 | Modified Date |
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8-bit I2C-bus and SMBus I/O port with interrupt (REV 9.0) PDF (585.0 kB) PCA9554_9554A [English] | 19 Mar 2013 |
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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 |
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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 |
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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 |
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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 |
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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 |
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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 |
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Footprint for wave soldering (REV 1.0) PDF (16.0 kB) SSOP-TSSOP-VSO-WAVE [English] | 08 Oct 2009 |
型号 | 状态 | No of bits | VDD [min] (V) | VDD [max] (V) | Over volt tolerant | No of supplies | Standby current [typ] (µA) | Max Sink Current per bit (mA) | Max Sink Current, per package (mA) | Source Current per bit (mA) | Interrupt output pin | Reset input pin | Output mode | Input mode: invert option | Internal pull-up resistor per bit (kOhm) | I2C-bus (kHz) | Footprint body and leads (mm2) | Package name | Package version | Operating Temperature (Cel) | No of Addresses | Remark |
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PCA9554PW/Q900 | Active | 8 | 2.3 | 5.5 | Y | 1 | 0.25 | 25 | 100 | 10 | Y | Totem pole | Y | 100 | 400 | 33.66 | TSSOP16 | SOT403-1 | -40~85 | 8 | ||
PCA9554PW | Active | 8 | 2.3 | 5.5 | Y | 1 | 0.25 | 25 | 100 | 10 | Y | Totem pole | Y | 100 | 400 | 33.66 | TSSOP16 | SOT403-1 | -40~85 | 8 | ||
PCA9554PW/DG | End of Life | 8 | 2.3 | 5.5 | Y | 1 | 0.25 | 25 | 100 | 10 | Y | Totem pole | Y | 100 | 400 | 33.66 | TSSOP16 | SOT403-1 | -40~85 | 8 | ||
PCA9554PW/G | No Longer Manufactured | 8 | 2.3 | 5.5 | Y | 1 | 0.25 | 25 | 100 | 10 | Y | Totem pole | Y | 100 | 400 | 33.66 | TSSOP16 | SOT403-1 | -40~85 | 8 |
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 | EFR | IFR(FIT) | MTBF(小时) | MSL | MSL LF |
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PCA9554PW | SOT403-1 | SSOP-TSSOP-VSO-WAVE | Bulk Pack | Active | PCA9554PW,112 (9352 691 94112) | 9554DH | PCA9554PW | week 48, 2004 | 0.0 | 2.0 | 5E8 | 1 | 1 | ||
Reel 13" Q1/T1 | Active | PCA9554PW,118 (9352 691 94118) | 9554DH | PCA9554PW | week 48, 2004 | 0.0 | 2.0 | 5E8 | 1 | 1 | |||||
PCA9554PW/DG | SOT403-1 | SSOP-TSSOP-VSO-WAVE | Reel 13" Q1/T1 | Discontinued | PCA9554PW/DG,118 (9352 858 96118) | 9554DH | PCA9554PW/DG | Always Pb-free | 0.0 | 2.0 | 5E8 | 1 | 1 | ||
PCA9554PW/Q900 | SOT403-1 | SSOP-TSSOP-VSO-WAVE | Reel 13" Q1/T1 | Active | PCA9554PW/Q900,118 (9352 946 94118) | 9554DH | PCA9554PW/Q900 | Always Pb-free | 0.0 | 2.0 | 5E8 | 1 | 1 |