具有中断、弱上拉和配置寄存器的 16 位 2.3V 至 5.5V I2C/SMBus I/O 扩展器

这个用于两线双向总线 (I2C) 的 16 位扩展器设计用于在 2.3V 至 5.5V VCC 之间运行。通过 I2C 接口 [串行时钟 (SCL)，串行数据 (SDA)]，它为大多数微控制器系列产品提供通用远程 I/O 扩展。\n\nPCA9555 由两个 8 位配置（输入或输出可选）、输入端口、输出端口和极性反转（高电平有效或低电平有效运行）寄存器组成。在加电时，I/O 被配置为输入。系统主控制器可以通过写入 I/O 配置位将 I/O 启用为输入或输出。每个输入或输出的数据均保存在相应的输入或输出寄存器中。输入端口寄存器的极性可借助极性反转寄存器进行转换。所有寄存器都可由系统主控器读取。 • 1µA 低待机电流消耗（最大值）\n• I2C 至并行端口扩展器\n• 开漏电路低电平有效中断输出\n• 可耐受 5V 电压的 I/O 端口\n• 兼容大多数微控制器\n• 400kHz 快速 I2C 总线\n• 针对多达 8 个器件使用的 3 个硬件地址引脚寻址\n• 极性反转寄存器\n• 具有最大高电流驱动能力的锁存输出，可用于直接驱动 LED\n• 锁断性能超过 100mA，符合 JESD 78 II 类规范\n• 静电放电 (ESD) 保护性能超过 JESD 22 规范的要求 \n• 2000V 人体放电模型 (A114-A)\n• 200V 机器放电模型 (A115-A)\n• ;

TI

德州仪器

Low-voltage 16-bit I2C-bus I/O port with interrupt and weak pull-up

General description The PCA9555A is a low-voltage 16-bit General Purpose Input/Output (GPIO) expander with interrupt and weak pull-up resistors for I2C-bus/SMBus applications. 恩XP I/O expanders provide a simple solution when additional I/Os are needed while keeping interconnections to a minimum

文件：2.45781 Mbytes 页数：39 Pages

恩XP

Low-voltage 16-bit I2C-bus I/O port with interrupt and weak pull-up

General description The PCA9555A is a low-voltage 16-bit General Purpose Input/Output (GPIO) expander with interrupt and weak pull-up resistors for I2C-bus/SMBus applications. 恩XP I/O expanders provide a simple solution when additional I/Os are needed while keeping interconnections to a minimum

文件：2.45781 Mbytes 页数：39 Pages

恩XP

Low-voltage 16-bit I2C-bus I/O port with interrupt and weak pull-up

General description The PCA9555A is a low-voltage 16-bit General Purpose Input/Output (GPIO) expander with interrupt and weak pull-up resistors for I2C-bus/SMBus applications. 恩XP I/O expanders provide a simple solution when additional I/Os are needed while keeping interconnections to a minimum

文件：2.45781 Mbytes 页数：39 Pages

恩XP

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

General description The PCA9555 is a 24-pin CMOS device that provides 16 bits of General Purpose parallel Input/Output (GPIO) expansion for I2C-bus/SMBus applications and was developed to enhance the 恩XP Semiconductors family of I2C-bus I/O expanders. The improvements include higher drive capab

文件：583.74 Kbytes 页数：34 Pages

恩XP

16-bit I2C and SMBus I/O port with interrupt

DESCRIPTION The PCA9555 is a 24-pin CMOS device that provide 16 bits of General Purpose parallel Input/Output (GPIO) expansion for I2C/SMBus applications and was developed to enhance the Philips family of IC I/O expanders. The improvements include higher drive capability, 5 V I/O tolerance, low

文件：185.32 Kbytes 页数：22 Pages

PHI

PHI

16-bit I2C and SMBus I/O port with interrupt

DESCRIPTION The PCA9555 is a 24-pin CMOS device that provide 16 bits of General Purpose parallel Input/Output (GPIO) expansion for I2C/SMBus applications and was developed to enhance the Philips family of IC I/O expanders. The improvements include higher drive capability, 5 V I/O tolerance, low

文件：185.32 Kbytes 页数：22 Pages

PHI

PHI

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

General description The PCA9555 is a 24-pin CMOS device that provides 16 bits of General Purpose parallel Input/Output (GPIO) expansion for I2C-bus/SMBus applications and was developed to enhance the 恩XP Semiconductors family of I2C-bus I/O expanders. The improvements include higher drive capab

文件：583.74 Kbytes 页数：34 Pages

恩XP

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

General description The PCA9555 is a 24-pin CMOS device that provides 16 bits of General Purpose parallel Input/Output (GPIO) expansion for I2C-bus/SMBus applications and was developed to enhance the 恩XP Semiconductors family of I2C-bus I/O expanders. The improvements include higher drive capab

文件：583.74 Kbytes 页数：34 Pages

恩XP

16-bit I2C and SMBus I/O port with interrupt

DESCRIPTION The PCA9555 is a 24-pin CMOS device that provide 16 bits of General Purpose parallel Input/Output (GPIO) expansion for I2C/SMBus applications and was developed to enhance the Philips family of IC I/O expanders. The improvements include higher drive capability, 5 V I/O tolerance, low

文件：185.32 Kbytes 页数：22 Pages

PHI

PHI