8-bit I2C-bus and SMBus I/O port with interrupt

General description The PCA9554 and PCA9554A are 16-pin CMOS devices that provide 8 bits of General Purpose parallel Input/Output (GPIO) expansion for I2C-bus/SMBus applications and were developed to enhance the NXP Semiconductors family of I2C-bus I/O expanders. The improvements include higher d

文件：187.57 Kbytes 页数：30 Pages

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8-bit I2C-bus and SMBus I/O port with interrupt

General description The PCA9554 and PCA9554A are 16-pin CMOS devices that provide 8 bits of General Purpose parallel Input/Output (GPIO) expansion for I2C-bus/SMBus applications and were developed to enhance the NXP Semiconductors family of I2C-bus I/O expanders. The improvements include higher d

文件：590.74 Kbytes 页数：35 Pages

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8-bit I2C-bus and SMBus I/O port with interrupt

General description The PCA9554 and PCA9554A are 16-pin CMOS devices that provide 8 bits of General Purpose parallel Input/Output (GPIO) expansion for I2C-bus/SMBus applications and were developed to enhance the NXP Semiconductors family of I2C-bus I/O expanders. The improvements include higher d

文件：590.74 Kbytes 页数：35 Pages

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带有中断的8位I2C总线和SMBus I/O端口

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。\nPCA9554/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 2.3 V至5.5 V的工作电源电压范围\n5 V耐受I/O\n极性反转寄存器\n低电平有效的中断输出\n低待机电流\nSCL/SDA输入上有噪音滤波器\n上电时没有脉冲干扰\n内部上电复位\n默认为8个输入的8个I/O引脚\n0 Hz至400 kHz时钟频率\nESD保护：按JESD22-A114超过2000 V HBM，按JESD22-A115超过200 V MM，按JESD22-C101超过1000 V CDM\n已按照JEDEC标准JESD78完成闭锁测试，超过100 mA\n提供封装：DIP16、SO16、SSOP16、SSOP20、TSSOP16、HVQFN16（2种版本：4 x ;

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