Introduction
RA8876/77 是極省電的彩色LCD 控制器，對外部記憶體SDRAM 支持最多可達512M-bit。為了可以快速對外部的顯示記憶體進行LCD更新，因此RA8876/77 提供一高效頻寬的8/16bit 非同步並列的主控端介面，RA8876/77 提供多段的顯示記憶體緩衝區段，並提供畫中畫(PIP)、透明度控制與顯示旋轉鏡像等功能。
Features
Frame Buffer
- SDRAM density:16Mb, 32Mb, 64Mb, 128Mb, 256Mb or 512Mb
- 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
LVDS IF
High Speed 3/4, IIC Serial MCI I/F
Embedded ASCII Font. 8x16,12x24,16x32 Character
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 | RA8871M | RA8873M| RA8876M | RA8876 | RA8877 | RA8875 |
|---|---|---|---|
| Product Guide | RA8871M : PDF | RA8876 : PDF | RA8875 : PDF |
| RA8873M : PDF | RA8877 : PDF | ||
| RA8876M : PDF | |||
| Resolution(Max) | RA8871M : 320 x 240 / 480 x 272 RA8873M : 800 x 480 RA8876M : 1366 x 768 |
1366 x 768 | 800 x 480 |
| Colors(Max) | RA8871M : 256 / 65K / 16.7M RA8873M : 256 / 65K RA8876M : Mono / 256 / 65K / 16.7M |
Mono / 256 / 65K / 16.7M | 256 / 65K |
| Panel Type | CMOS / TTL | RA8876 : CMOS / TTL RA8877 : LVDS | CMOS / TTL |
| Parallel MPU Interface | 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 |
| Master I/F | SPI / IIC | SPI / IIC | -- |
| Embedded Display RAM | SDRAM | -- | 768KB |
| External SDRAM | -- | Up to 512Mbits | -- |
| Embedded ASCII Font | 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 |
| Touch Panel Controller | -- | -- | 4-Wires |
| Block Transfer Engine | V | V | V |
| Geometric Speed-up Engine | V | V | V |
| Virtual Display | Multi Buffer Display | Multi Buffer Display | -- |
| Picture-in-Picture | V | V | -- |
| Dual Pages Mode | V | V | V |
| Horizontal Scroll | V | V | V |
| Vertical Scroll | V | V | V |
| Graphic/Font Rotation | V | V | V |
| Programmable Text Cursor | V | V | V |
| Support Graphic Cursor | V | V | V |
| User-defined Characters | V | V | V |
| Alpha-Blending | V | V | -- |
| DMA | V | V | V |
| PWM O/P | 2 | 2 | 2 |
| Smart Key-Scan | 5x5 | 5x5 | 4x5 |
| GPIO | Max 40 | Max 40 | 9 |
| Clock Source | X'tal + PLL | X'tal + PLL | X'tal + PLL |
| Operation Voltage | 3.0 ~ 3.6V | 3.0 ~ 3.6V | 3.0 ~ 3.6V |
| Package | LQFP-128 | LQFP-128 | LQFP-100 |
| Operation Temperature | -40 ~ +85℃ | -40 ~ +85℃ | -30 ~ +85℃ |