LC75700T数据手册集成电路（IC）的专用规格书PDF

描述 Description

The LC75700T is a key scanning LSI that accepts input from up to 30 keys and can control up to four generalpurpose output ports. Therefore it can reduce the number of lines to the front panel in application systems.

特性 Features

• Key input function for up to 30 keys.
• General-purpose output ports for up to four pins.
• A key scan is performed only when a key is pressed, and thus power dissipation is reduced.
• Serial data I/O supports 'computer control bus' format communication with the system controller.
• Switching between the key scan output port and generalpurpose output port functions can be controlled by the control data.
• The RES pin is provided. This pin disables key scanning, and forces the general-purpose output ports to the low level.
• RC oscillator circuit

简介

LC75700T属于集成电路（IC）的专用。由制造生产的LC75700T专用该系列产品可提供所需的功能，用以将信息源/信宿连到各种复杂或范围狭窄应用中的传感器、变送器、致动器、传输介质或其他此类端点。例如，汽车安全气囊驱动器、车身控制和信息娱乐总线、自适应电缆均衡器、智能卡等等。