JLC1562B数据手册集成电路（IC）的I/O扩展器规格书PDF

描述 Description

The JLC1562B facilitates easy I2C Bus expandibility. Multiple devices (up to 8 on the same I2C Bus) are easily added as each device has its own selectable 3−bit address. The JLC1562B provides an 8−bit bidirectional input/output port and 6−bit resolution Digital to Analog Converter. The voltage on pins P0−P4 is compared with a controllable threshold voltage and the results are readable through the I2C Bus.
I2C Bus interface pins SDA, SCL and A0−A2 are; Serial Data, Serial Clock and Device Address respectively. External interface pins are P0−P7 and VDAC; I/O Port and D/A output.

特性 Features

• Low Power Dissipation
• I2C−Bus Format (2−Wire Type; SDA, SCL) Data Transfer
• 6−bit DAC
• Bus Address Selectable (3−bit)
• Address Input Pins are Pulled Up to VDD with Internal Resistor
• I/O Pins are Open Drain Outputs
• 5 Comparators at Inputs
• Inputs Protected from External Bus Currents in Power Down Mode
• Pb−Free Packages are Available*

简介

JLC1562B属于集成电路（IC）的I/O扩展器。由制造生产的JLC1562BI/O 扩展器该系列器件可与微控制器、微处理器或类似器件结合使用，目的是增加可用于连接外设的信号连接数量。典型的工作概念涉及使用串行通信，只需主机设备上的几根 I/O 线，即可读/写扩展器设备上的许多输入/输出引脚的状态。该技术的通信速度不佳，但连通性较高，最适合快速响应不是很关键的应用，例如许多人机界面应用。