HD66420 Overview
The HD66420 drives and controls a dot matrix graphic LCD(Liquid Crystal Display) using a bit-mapped method. It provides a highly flexible display through its on-chip display RAM, in which each two bits of data can be used to turn on or off one dot on LCD panel with four-level grey scale. A single HD66420 can display a maximum of 160x80 dots using its powerful display control functions.
HD66420 Key Features
- Circuits for generating LCD driving voltage : Contrast control, Operational amplifier, and Resistive dividers
- Internal resistive divider: programmable bias rate
- 32-level programmable contrast control
- Wide range of instructions reversible display, display on/off, vertical display scroll, blink, reversible address, read-
- Package: TCP
- Connected to Power supply Power supply V1 to V5 of HD66420 Oscillator resister or external clock Description VCC: +2.2V