The PCF8574 device provides general-purpose remote I/O expansion for most microcontroller families by way of the I2C interface [serial clock (SCL), serial data (SDA)]. The device features …

This 16-bit I/O expander for the two-line bidirectional bus (I2C) is designed for 2.5-V to 5.5-V VCC operation. The PCF8575 device provides general-purpose remote I/O expansion for most microcontroller families by way of the I2C interface [serial clock (SCL), serial data (SDA)].

The PCF8574/74A provides general-purpose remote I/O expansion via the two-wire bidirectional I2C-bus (serial clock (SCL), serial data (SDA)). The devices consist of eight quasi-bidirectional ports, 100 kHz I2C-bus interface, three hardware address inputs and interrupt output operating between 2.5 V and 6 V.

The PCF8574 device provides general-purpose remote I/O expansion for most microcontroller families by way of the I2C interface [serial clock (SCL), serial data (SDA)]. The device features an 8-bit quasi-bidirectional I/O port (P0–P7), including latched outputs with high-current drive capability for directly driving LEDs.

The PCF8574A device provides general-purpose remote I/O expansion for most microcontroller families via the I2C interface [serial clock (SCL), serial data (SDA)]. The device features an 8-bit quasi-bidirectional I/O port (P0–P7), including latched outputs with high-current drive capability for directly driving LEDs.

pcf8575 器件通过 i2c 接口 [串行时钟 (scl)、串行数据 (sda)] 为大多数微控制器系列提供通用远程 i/o 扩展。 该器件具有一个 16 位准双向输入/输出 (I/O) 端口（P07–P00、P17–P10），其中包括具有高电流驱动能力的锁存输出，用于直接驱动 LED。

PCF8575 器件通过 I2C 接口 [串行时钟 (SCL)、串行数据 (SDA)] 为大多数微控制器系列提供通用远程 I/O 扩展。 (P07–P00、P17–P10),其中包括具有高电流驱动能力的锁存输出,用于直接驱动 LED。 每个准双向 I/O 都可以用作输入或输出(无需使用数据方向控制信号) 。 在上电时,这些 I/O 处于高电平。 在该模式下,仅有一个连接到 VCC 的电流源处于活动状态。 有关可用封装,请参阅节 12。 封装尺寸(长 × 宽) 为标称值, 并包括引脚( 如适用)。 本资源的原文使用英文撰写。 为方 …

2024年3月9日 · PCF8574是TI（Texas Instruments）公司生产的一种常见的I/O扩展芯片，用于将微控制器的少量GPIO引脚扩展为更多的GPIO接口。它采用I2C总线（串行通信协议）进行与微处理器的通信。PCF8574芯片具有8个并行输入/输出引脚（即I/O口），可以根据需要配置为输入或输 …

2022年11月2日 · With the Adafruit PCF8575 GPIO Expander Breakout - an affordable 16 channel I2C expander - you can add more GPIO to your project super easily! GPIO expanders work like this: you have a board with some number of GPIO but not enough for your project - maybe you need more buttons or LEDs.

2019年1月2日 · The PCF8574 is one of the more popular methods of adding lines as it uses the I2C bus that requires only 2 lines on the MCU. It provides 8 additional digital I/O lines, which are easily expandable up to 64.