Product Summary

The RA8820 is a Character/Graphic dot-matrix liquid crystal display controller (LCD) with embedded 512K Byte Font ROM. The RA8820 supports up to 240x160. In tradition, users need a graphic LCM to display Chinese characters. Now Chinese characters display of RA8802/8820 presents a revolution. The RA8820, instead of a MCU, can directly deal with the access of Chinese/English fonts that consist of BIG5 or GB, and ASCII code.

Parametrics

RA8820 absolute maximum ratings: (1)PVIN: -0.3V to 30V SVIN: -0.3V to 30V; (2)Lx: -2V to 30V; (3)ISET: -2V to 30V; (4)FB: -0.3V to 5.5V; (5)Storage Temperature: -65 °C to 150 °C; (6)Junction Temperature: -40°C to 125°C; (7)Lead Temperature (Soldering, 10 sec): 300 °C.

Features

RA8820 features: (1)Dot matrix liquid crystal display controller supporting the display of Character/Graphic; (2)Fast Character/Graphical Mode for ASCII & Chinese (Big5 Code and GB Code)support; (3)Display Control Capacity; (4)RA8802: 320×240 dots (Max), 20×15 full-size character or 40×15 half-size character RA8820: 240x160 dots (Max), 15x10 full-size character or 30x10 half-size character; (5)Display of 16x16 dot for full-size fonts consisting of Chinese, 8x16 dots for half-size fonts of alphanumeric characters and symbols in the same display; (6)Clock source: RC Oscillator or 32K crystal for PLL (External 32KHz Crystal need); (7)Built-in 9.6Kbyte/4.8Kbyte Display Data RAM; (8)High-speed 4/8-bit MCU interface allowing direct connection to both the 8080 and 6800; (9)LCD interface: LCD driver compatible for data bus 4/8 bit supports.

Diagrams

RA8820 pin connection