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 恩XP Semiconductors family of I2C-bus I/O expanders. The improvements include higher d

文件：187.57 Kbytes 頁數：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 恩XP Semiconductors family of I2C-bus I/O expanders. The improvements include higher d

文件：590.74 Kbytes 頁數：35 Pages

恩XP

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 恩XP Semiconductors family of I2C-bus I/O expanders. The improvements include higher d

文件：590.74 Kbytes 頁數：35 Pages

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帶有中斷的8位I2C總線和SMBus I/O端口

PCA9554和PCA9554A是16引腳CMOS器件，為I2C總線/SMBus應用提供8位通用并行輸入/輸出(GPIO)擴展，是為增強恩XP Semiconductors的I2C總線I/O擴展器系列而開發(fā)的。改進內容包括更高的驅動能力、5 V I/O容限、更低的供電電流、獨立的I/O配置、400 kHz時鐘頻率和更小的封裝。ACPI電源開關、傳感器、按鈕、LED、風扇等需要額外的I/O時，I/O擴展器提供簡易的解決方案。\nPCA9554/PCA9554A由8位配置寄存器（輸入或輸出選擇）、8位輸入端口寄存器、8位輸出端口寄存器和8位極性反轉寄存器（高電平有效或低電平有效操作）組成。系統主器 2.3 V至5.5 V的工作電源電壓范圍\n5 V耐受I/O\n極性反轉寄存器\n低電平有效的中斷輸出\n低待機電流\nSCL/SDA輸入上有噪音濾波器\n上電時沒有脈沖干擾\n內部上電復位\n默認為8個輸入的8個I/O引腳\n0 Hz至400 kHz時鐘頻率\nESD保護：按JESD22-A114超過2000 V HBM，按JESD22-A115超過200 V MM，按JESD22-C101超過1000 V CDM\n已按照JEDEC標準JESD78完成閉鎖測試，超過100 mA\n提供封裝：DIP16、SO16、SSOP16、SSOP20、TSSOP16、HVQFN16（2種版本：4 x ;

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