DESCRIPTION

· The LC75700T is a key scanning LSI designed to handle input from up to 30 keys and control up to four general-purpose output ports, reducing the number of lines needed in application systems.

FEATURES

· Supports key input for up to 30 keys.
· Provides up to four general-purpose output ports.
· Reduces power dissipation by performing key scans only when a key is pressed.
· Serial data I/O supports CCB format communication with the system controller.
· Allows switching between key scan output port and general-purpose output port functions via control data.
· Includes a RES pin to disable key scanning and force general-purpose output ports to low level.
· Equipped with an RC oscillator circuit.

APPLICATIONS

· Suitable for systems requiring key input and output port control, such as front panel interfaces in electronic devices.