PCA9535CHF: 带有中断的16位I2C总线和SMBus、低功率I/O端口
PCA9535和PCA9535C是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，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。
PCA9535和PCA9535C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。
除取消I/O保持低电平时极大降低功耗的内部I/O上拉电阻外，PCA9535与PCA9555完全相同。
除所有I/O引脚均为高阻抗开漏输出外，PCA9535C与PCA9535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PCA9535和PCA9535C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。PCA9535和PCA9535C的固定I²C总线地址与PCA9555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。
sot994-1_3d
数据手册 (1)
| 名称/描述 | Modified Date |
|---|---|
| 16-bit I2C-bus and SMBus, low power I/O port with interrupt (REV 5.0) PDF (183.0 kB) PCA9535_PCA9535C [English] | 15 Sep 2008 |
应用说明 (3)
| 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 |
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 |
| 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 thermal enhanced very very thin quad flat package; no leads; 24 terminals; body 4 x 4 x 0.75 mm (REV 1.0) PDF (213.0 kB) SOT994-1 [English] | 08 Feb 2016 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PCA9535CHF | Active | 16 | 2.3 | 5.5 | Y | 1 | 0.25 | 25 | 200 | Y | Open drain | Y | 400 | 16.81 | HWQFN24 | SOT994-1 | -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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PCA9535CHF | | SOT994-1 | Reel 13" Q1/T1 | Active | PCA9535CHF,118 (9352 852 72118) | P35C | PCA9535CHF |    | Always Pb-free | 0.0 | 2.0 | 5E8 | 1 | 1 |
- 16-bit I2C-bus and SMBus, low power I/O port with interrupt pca9535_pca9535c
- 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
- 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
- Expert mode sample code for 16-bit Totem Pole PCAL9555APW
- plastic thermal enhanced very very thin quad flat package; no leads; 24 terminals; body 4 x 4 x 0.75 mm pcal9555a
- PCAL9555A
