The RA8835A is a controller IC that can display text and graphics on LCD panel. It can display layered text and graphics, scroll the display in any direction and partition the display into multiple screens. It also stores text, character codes and bitmapped graphics data in external frame buffer memory. Display controller functions include transferring data from the controlling microprocessor to the buffer memory, reading memory data, converting data to display pixels and generating timing signals for the buffer memory, LCD panel.
The RA8835A has an internal character generator with 160, 5x7 pixel characters in internal mask ROM. The character generators support up to 64, 8x16 pixel characters in external character generator RAM and up to 256, 8x16 pixel characters in external character generator ROM.
Character. Graphics and Mixed Mode
Three Overlapping Screens in graphics mode
Up to 640 X 256 pixel resolution
Up to 640 X 256 pixel resolution memory
Programmable cursor control
Smooth Horizontal and Vertical scrolling
1/2-duty to 1/256-duty
160, 5x7 pixel characters in internal mask-programmed character generator ROM
Up to 64, 8x16 pixel characters in external character generator RAM
Up to 256, 8x16 pixel characters in external character generator ROM
8-bit of 6800/8080 MCU interface
Low power consumption
Functions | RA6963 | RA8835A |
---|---|---|
Product Guide | RA6963 : PDF | RA8835A : PDF |
Resolution(Max) | External display RAM 64KB max | External display RAM Up to 640x256 pixel |
Operation Voltage | 4.5~5.5V | 2.7~5.5V |
MPU Interface | 8-bit ,8080 | 8-bit 6800,8080 |
Graphic / Text | Graphic/ Text | Graphic/ Text |
Embedded Font RAM | CGROM (128 word) | CGROM (160 word) |
Character Font | Horizontal: 5, 6, 7, 8 Vertical: 8 (fixed) | 5 x 7 |
Horizontal Scroll | V | V |
Vertical Scroll | V | V |
Read/Write Display Data | V | V |
S/W & H/W Reset | V | V |
Clock Source | X’tal OSC | X’tal OSC |
CLK (MHz) | 0.4~8 | 1~18 |
Package | LQFP67 | QFP60/TQFP60 |
Operation Temperature | -30 ~ +85℃ | -30 ~ +80℃ |
Compatible | T6963C | S1D13305 |