LC75700T Key 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 CCB format munication with the system controller
- Switching between the key scan output port and general purpose output port functions can be controlled by the control da
- The RES pin is provided. This pin disables key scanning, and forces the general-purpose output ports to the low level
- RC oscillator circuit