Introduction
RA8889 是一款低功耗及显示功能强大的彩色TFT 控制器，内部具有记忆体SDRAM，为了可以快速为显示记忆体进行萤幕更新，RA8889 支持MCU 端8080/6800 8/16-bit 非同步并列介面与3/4 线SPI 及IIC串列介面，提供多段的显示记忆体缓冲区段，并提供画中画(PIP)、透明度控制与显示旋转镜像及内建JPEG Decoder等功能。
Figure 1-1 : System Diagram
Features
Frame Buffer
- Build-in 128Mb SDRAM
- SDRAM configuration: x16
- 16-bit SDRAM bus, maximum frame buffer: 256MB/512MB
Supports images sizes : 1366 x 768
Mono / 256 / 65K / 16.7M colors
CMOS TTL
High Speed 3/4, IIC Serial MCU I/F
Embedded 12x24 Character Sets of ISO/IEC 8859-1/2/4/5.
Supports Ext. Font Code IC
Provide 4 User-defined 32x32 pixels Graphic Cursor
DMA Function
Supports Alpha-Blend, PIP, BTE
Geometric Drawing Engine
Related product Specification
| Functions | RA8889 | RA8871M | RA8873M | RA8876M | RA8876 | RA8877 | RA8875 |
|---|---|---|---|---|
| Product Guide | RA8889 : PDF | RA8871M : PDF | RA8876 : PDF | RA8875 : PDF |
| RA8873M : PDF | RA8877 : PDF | |||
| RA8876M : PDF | ||||
| Resolution(Max) | 1366 x 768 | RA8871M : 320 x 240 / 480 x 272 RA8873M : 800 x 480 |
1366 x 768 | 800 x 480 |
| Colors(Max) | 16.7M | RA8871M : 256 / 4K / 65K / 16.7M RA8873M : 256 / 65K |
Mono / 256 / 65K / 16.7M | 256 / 65K |
| Panel Type | CMOS / TTL | CMOS / TTL | RA8876 : CMOS / TTL RA8877 : LVDS | CMOS / TTL |
| Parallel MPU Interface | 8/16-Bits | 8/16-Bits | 8/16-Bits | 8/16-Bits |
| Serial MCU I/F | SPI 3 | 4 / IIC | SPI 3 | 4 / IIC | SPI 3 | 4 / IIC | SPI 3 | 4 / IIC |
| Master I/F | SPI / IIC | SPI / IIC | SPI / IIC | -- |
| Embedded Display RAM | 128Mbits | SDRAM | RA8876M (64Mbits) | 768KB |
| External SDRAM | -- | -- | Up to 512Mbits (RA8876/RA8877) | -- |
| Embedded ASCII Font | ISO-8859 Latin 1, 2, 4, 5 |
ISO-8859 Latin 1, 2, 4, 5 |
ISO-8859 Latin 1, 2, 4, 5 | ISO-8859 Latin 1~4 |
| External Font ROM I/F | Serial | Serial | Serial | Serial |
| Media Decoder | V | -- | -- | -- |
| Touch Panel Controller | -- | -- | -- | 4-Wires |
| Block Transfer Engine | V | V | V | V |
| Geometric Speed-up Engine | V | V | V | V |
| Virtual Display | Multi Buffer Display | Multi Buffer Display | Multi Buffer Display | -- |
| Picture-in-Picture | V | V | V | -- |
| Dual Pages Mode | V | V | V | V |
| Horizontal Scroll | V | V | V | V |
| Vertical Scroll | V | V | V | V |
| Graphic/Font Rotation | V | V | V | V |
| Programmable Text Cursor | V | V | V | V |
| Support Graphic Cursor | V | V | V | V |
| User-defined Characters | V | V | V | V |
| Alpha-Blending | V | V | V | -- |
| DMA | V | V | V | V |
| PWM O/P | V | 2 | 2 | 2 |
| Smart Key-Scan | V | 5x5 | 5x5 | 4x5 |
| GPIO | V | Max 40 | Max 40 | 9 |
| Clock Source | X'tal + PLL | X'tal + PLL | X'tal + PLL | X'tal + PLL |
| Operation Voltage | 3.0 ~ 3.6V | 3.0 ~ 3.6V | 3.0 ~ 3.6V | 3.0 ~ 3.6V |
| Package | LQFP-100 | LQFP-128 | LQFP-128 | LQFP-100 |
| Operation Temperature | -40 ~ +85 | -40 ~ +85 | -40 ~ +85 | -30 ~ +85 |