PCA9555D: 带有中断的16位I2C总线和SMBus I/O端口
PCA9555是一款24引脚CMOS器件，为I²C总线/SMBus应用提供16位通用并行输入/输出(GPIO)扩展且开发用于增强NXP Semiconductors系列的I²C总线I/O扩展器。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。
PCA9555由两个8位配置（输入或输出选择）、输入、输出和极性反转（高电平有效或低电平有效操作）寄存器组成。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或输出寄存器中。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PCF8575，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PCA9555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。PCA9555的固定I²C总线地址与PCA9554相同，允许最多八个这些器件以任意组合方式共享相同的I²C总线/SMBus。
PCA9555D: 产品结构框图
Outline 3d SOT137-1
数据手册 (1)
| 名称/描述 | Modified Date |
|---|---|
| 16-bit I2C-bus and SMBus I/O port with interrupt (REV 8.0) PDF (539.0 kB) PCA9555 [English] | 22 Oct 2009 |
应用说明 (5)
| 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 |
| LED dimmer demoboard (REV 1.0) PDF (392.0 kB) AN10315 [English] | 11 Jan 2005 |
| 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 (5)
| 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 |
| 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 small outline package; 24 leads; body width 7.5 mm (REV 1.0) PDF (379.0 kB) SOT137-1 [English] | 08 Feb 2016 |
包装 (1)
| 名称/描述 | Modified Date |
|---|---|
| SO24; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering... (REV 4.0) PDF (235.0 kB) SOT137-1_118 [English] | 12 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 (8.0 kB) SO-SOJ-WAVE [English] | 08 Oct 2009 |
Design Support
- Expert mode sample code for 16-bit Totem Pole (REV 1.0) TXT 16-BIT-TOTEM-POLE-READ-WRITE 12/10/2014
订购信息
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PCA9555D | Active | 16 | 2.3 | 5.5 | Y | 1 | 0.25 | 25 | 200 | 10 | Y | Totem pole | Y | 100 | 400 | 166.14 | SO24 | SOT137-1 | -40~85 | 8 |
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 | EFR | IFR(FIT) | MTBF（小时） | MSL | MSL LF |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PCA9555D | | SOT137-1 | SO-SOJ-WAVE | Reel 13" Q1/T1 | Active | PCA9555D,118 (9352 695 67118) | PCA9555D | PCA9555D |    | week 11, 2005 | 0.0 | 2.0 | 5E8 | 1 | 1 |
| Bulk Pack | Active | PCA9555D,112 (9352 695 67112) | PCA9555D | PCA9555D | | week 11, 2005 | 0.0 | 2.0 | 5E8 | 1 | 1 |
- 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
- LED dimmer demoboard PCA9533
- 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
- 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 16-bit Totem Pole PCAL9555APW
- plastic small outline package; 24 leads; body width 7.5 mm 74LVC4245A_Q100
- Footprint for wave soldering NPIC6C596A_Q100
- SO24; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering... 74LVC4245A_Q100
- PCA9555
- PCA9552
