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
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
PCA9535CHFActive162.35.5Y10.2525200YOpen drainY40016.81HWQFN24SOT994-1-40~858
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
PCA9535CHFSOT994-1Reel 13" Q1/T1ActivePCA9535CHF,118 (9352 852 72118)P35CPCA9535CHFAlways Pb-free0.02.05E811
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