PCA9536DP 4位I2C总线和SMBus I/O端口
PCA9536是一款8引脚CMOS器件，为I2C总线/SMBus应用提供4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。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。
PCA9536由4位配置寄存器（输入或输出选择）、4位输入端口寄存器、4位输出端口寄存器和4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。
上电复位会将寄存器设为其默认值并初始化器件状态机。
I²C总线地址固定因而相同I²C总线/SMBus上只允许存在一个器件。
产品特点 Features
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功能框图
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封装
| 型号 | 可订购的器件编号 | 订购码 (12NC) | 产品状态 | 封装 |
| PCA9536DP | 9352 774 16118 | PCA9536DP,118 | 量产 | TSSOP8 (SOT505-1) |
| PCA9536DP/DG | 9352 858 94118 | PCA9536DP/DG,118 | 量产 | TSSOP8 (SOT505-1) |
订货和供应
| 型号 | 订购码 (12NC) | 可订购的器件编号 | 化学成分 |
| PCA9536DP | 9352 774 16118 | PCA9536DP,118 | PCA9536DP |
| PCA9536DP/DG | 9352 858 94118 | PCA9536DP/DG,118 | PCA9536DP/DG |
PCA9536DP 技术支持
| 档案名称 | 标题 | 类型 | 格式 |
| PCA9536DP | 4-bit I2C-bus and SMBus I/O port | Data sheet | |
| AN10441 | Level shifting techniques in I2C-bus design | Application note | |
| AN255 | I2C / SMBus Repeaters, Hubs and Expanders | Application note | |
| AN10710 | Features and applications of the PCA9536 I2C-bus extender | Application note | |
| 75016527 | Extend standard I2C-bus devices without worrying about offset voltages; NXP I2C-bus extender PCA9536 in a proven application | Brochure | |
| 75016532 | Extend the I2C-bus with advanced repeaters and hubs; NXP 2-channel I2C-bus repeaters PCA9536x and 5-channel I2C-bus hubs PCA9516x | Leaflet | |
| 75016080 | Extend the reach of any I2C-bus system without special offset voltage levels; NXP I2C-bus extender PCA9536 | Leaflet | |
| 75017424 | NXP I2C-bus solutions 2013: Smart, simple solutions for the 12 most common design concerns | Leaflet | |
| UM10204 | I2C-bus specification and user manual | User manual | |
| UM10206 | I2C Demonstration Board 2005-1 Quick Start Guide | User manual | |
| UM10323 | PCA9600 demonstration board OM6293 | User manual |
