RAiO TECHNOLOGY INC. 1/191 www.raio.com.tw
RAiO
RA8875
文字/圖形
TFT LCD 控制器
規格書
Version 1.6
Demcember 03, 2013
RAiO Technology Inc.
©Copyright RAiO Technology Inc. 2011, 2012, 2013
Version 1.6
文字
/
圖形
TFT LCD
控制器
RAiO TECHNOLOGY INC. 2/191 www.raio.com.tw
RA8875
改 版 說 明
版 本 日 期 說 明
August 01, 2011 Preliminary Version
October 04, 2011
1.Modify Figure 7-80、Figure 7-81
November 18, 2011
1. Modify Section 7-4-2
2. Modify Table 8-2
1.0
November 30, 2011
1. Add Figure 7-82
2. Modify Figure 6-41
1.1 January 10, 2012
1. Modify Section 7-6 BTE Function
(Parallel MCU interface only)
February 09, 2012 1. Add Appendix A
February 22, 2012 1. Modify REG[21h]
1.2
March 16, 2012
1. Modify Section 4-8 : pin description of OSC_VDD
1. Modify Section 6-1-2 : Serial I/F Protocol
2. Add Note of REG[94h], REG[98h], Figure 7-29, Figure 7-30
May 15, 2012
1. Modify Section 5-2 : the Bit1 of REG[01h]
2. Modify Table 7-8
1.3
March 16, 2013
1. Modify Section 4-1 : pin description of PS
2. Modify Section 5-2 : REG[01h]、REG[16h]
3. Add Section 6-1-2-3 :SPI Sleep/Wake Up
1.4 May 3, 2013
1. Modify Section 6-1-2-1 : 3-Wire SPI Interface
2. Modify Section 6-1-2-2 : 4-Wire SPI Interface
June 18, 2013
1. Modify Figure 6-12、Figure 6-18
July 17, 2013 1. Modify Section 6-8 : Example of formula for system clock
1.5
July 31, 2013 1. Modify Section 5-2 : REG[15h]
1.6 Demcember 03, 2013
1. Modify Figure 6-37~Figure 6-40、Figure 6-48
Version 1.6
文字
/
圖形
TFT LCD
控制器
RAiO TECHNOLOGY INC. 3/191 www.raio.com.tw
RA8875
Chapter Contents Page
1. 簡介............................................................................................................7
2. 特性............................................................................................................7
3. 方塊圖......................................................................................................... 8
3-1 內部方塊圖 ........................................................................................................... 8
3-2 系統方塊圖 ........................................................................................................... 8
4. 腳位定義.....................................................................................................9
4-1 MCU 介面............................................................................................................. 9
4-2 串列式MCU介面 ................................................................................................. 10
4-3 LCD面板介面...................................................................................................... 11
4-4 串列式Flash/ROM 介面...................................................................................... 11
4-5 觸控介面............................................................................................................. 12
4-6 鍵盤介面............................................................................................................. 12
4-7 脈寬調變介面...................................................................................................... 12
4-8 時脈與電源介面 .................................................................................................. 13
5. 暫存器....................................................................................................... 14
5-1 狀態暫存器 ......................................................................................................... 15
5-2 系統與組態暫存器............................................................................................... 16
5-3 LCD 顯示模式..................................................................................................... 21
5-4 工作視窗及捲動視窗設定.................................................................................... 27
5-5 游標設定............................................................................................................. 30
5-6 BTE 引擎............................................................................................................ 34
5-7 觸控面板............................................................................................................. 41
5-8 圖形游標............................................................................................................. 43
5-9 PLL設定 ............................................................................................................. 44
5-10 脈波寬度調變 (PWM).......................................................................................... 46
5-11 繪圖控制暫存器 .................................................................................................. 49
5-12 直接記憶體存取 (DMA) 暫存器........................................................................... 55
5-13 鍵盤掃描與 IO控制暫存器................................................................................... 58
5-14 浮動視窗控制暫存器........................................................................................... 60
5-15 串列式Flash控制暫存器 ..................................................................................... 62
5-16 中斷控制............................................................................................................. 63
6. 硬體介面...................................................................................................66
6-1 MCU 介面........................................................................................................... 66
6-1-1 MCU傳輸協定........................................................................................................................67
6-1-1-1 並列式介面的傳輸協定................................................................................................67
Version 1.6
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RAiO TECHNOLOGY INC. 4/191 www.raio.com.tw
RA8875
6-1-2 串列式介面的協定..................................................................................................................70
6-1-2-1 3-Wire SPI 介面..........................................................................................................70
6-1-2-2 4-Wire SPI 介面..........................................................................................................73
6-1-2-3 SPI 睡眠 / 喚醒............................................................................................................77
6-1-2-4 IIC 介面.......................................................................................................................78
6-1-3 狀態讀取暫存器 .....................................................................................................................80
6-1-4 指令寫入暫存器 .....................................................................................................................81
6-1-5 記憶體讀取/寫入的操作 .........................................................................................................82
6-1-6 中斷與等待.............................................................................................................................83
6-1-6-1 中斷.............................................................................................................................83
6-1-6-2 等待.............................................................................................................................84
6-1-7 資料匯流排與TFT的RGB資料格式........................................................................................85
6-1-7-1 16 位元資料匯流排......................................................................................................85
6-1-7-2 8 位元資料匯流排........................................................................................................85
6-2 驅動介面的色彩設定模式.................................................................................... 86
6-3 LCD 介面............................................................................................................ 87
6-4 外部串列式Flash/ROM....................................................................................... 89
6-4-1 外部串列式字體記憶體 ..........................................................................................................92
6-4-2 外部串列式資料記憶體 ..........................................................................................................93
6-5 觸控介面............................................................................................................. 94
6-6 鍵盤掃描功能...................................................................................................... 96
6-7 脈寬調變介面...................................................................................................... 96
6-8 時脈 (Clock) 與 PLL........................................................................................... 97
6-9 重置功能............................................................................................................. 99
6-10 電源.................................................................................................................. 101
6-10-1 電源腳位說明.......................................................................................................................101
6-10-2 電源結構 ..............................................................................................................................101
7. 功能描述.................................................................................................102
7-1 捲動功能........................................................................................................... 102
7-1-1 捲動視窗與捲動偏移值 ........................................................................................................102
7-1-2 水平捲動與垂直捲動............................................................................................................102
7-1-3 圖層混合捲動.......................................................................................................................103
7-1-3-1 圖層 1 與圖層 2 同時捲動..........................................................................................104
7-1-3-2 只捲動圖層 1.............................................................................................................104
7-1-3-3 只捲動圖層 2.............................................................................................................105
7-1-3-4 緩衝捲動 ...................................................................................................................106
7-2 工作視窗........................................................................................................... 107
7-2-1 工作視窗的文字寫入............................................................................................................107
7-2-2 工作視窗的幾何圖形顯示.....................................................................................................108
7-2-3 工作視窗中的DMA功能顯示................................................................................................108
7-2-4 工作視窗的記憶體寫入 ........................................................................................................108
7-3 游標與圖形樣板 ................................................................................................ 109
7-3-1 游標種類 ..............................................................................................................................109
7-3-1-1 圖形游標 ...................................................................................................................109
Version 1.6
文字
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圖形
TFT LCD
控制器
RAiO TECHNOLOGY INC. 5/191 www.raio.com.tw
RA8875
7-3-1-2 記憶體讀取游標.........................................................................................................111
7-3-1-3 記憶體寫入游標.........................................................................................................111
7-3-1-4 文字寫入游標............................................................................................................112
7-3-2 游標屬性 ..............................................................................................................................112
7-3-2-1 游標閃爍 ...................................................................................................................112
7-3-2-2 游標的高度與寬度.....................................................................................................113
7-3-3 圖形樣板 ..............................................................................................................................115
7-4 文字.................................................................................................................. 116
7-4-1 內部文字記憶體 ...................................................................................................................116
7-4-2 外部 Font ROM ...................................................................................................................121
7-4-3 CGRAM (Character Generation RAM 自建字庫功能) ......................................................122
7-4-4 文字 90 度轉向.....................................................................................................................124
7-4-5 文字放大與通透功能............................................................................................................124
7-4-6 文字換行 ..............................................................................................................................125
7-4-7 文字全型對齊.......................................................................................................................125
7-5 幾何圖案繪圖引擎............................................................................................. 126
7-5-1 圓形輸入 ..............................................................................................................................126
7-5-2 橢圓輸入 ..............................................................................................................................127
7-5-3 曲線輸入 ..............................................................................................................................128
7-5-4 方形輸入 ..............................................................................................................................129
7-5-5 直線輸入 ..............................................................................................................................130
7-5-6 三角形輸入...........................................................................................................................131
7-5-7 圓角方形輸入.......................................................................................................................132
7-6 BTE 引擎功能 (僅支援並列式MCU 介面).......................................................... 133
7-6-1 選擇BTE起始點位置及圖層.................................................................................................136
7-6-2 BTE 操作說明......................................................................................................................136
7-6-2-1 BTE寫入....................................................................................................................136
7-6-2-2 BTE讀取....................................................................................................................136
7-6-2-3 BTE移動....................................................................................................................136
7-6-2-4 單色填滿 ...................................................................................................................136
7-6-2-5 圖案填滿 ...................................................................................................................136
7-6-2-6 BTE通透填滿 ............................................................................................................136
7-6-2-7 BTE通透寫入 ............................................................................................................137
7-6-2-8 BTE通透移動 ............................................................................................................137
7-6-2-9 顏色擴充 ...................................................................................................................137
7-6-2-10 顏色移動 ...................................................................................................................137
7-6-3 BTE記憶體存取方式............................................................................................................138
7-6-3-1 區塊記憶體讀取.........................................................................................................138
7-6-3-2 線性記憶體讀取.........................................................................................................138
7-6-4 BTE 功能說明......................................................................................................................139
7-6-4-1 BTE寫入搭配光柵運算功能.......................................................................................139
7-6-4-2 BTE讀取功能 ............................................................................................................141
7-6-4-3 BTE正向移動搭配光柵運算功能 ...............................................................................142
7-6-4-4 BTE反向移動搭配光柵運算功能 ...............................................................................144
7-6-4-5 BTE通透性寫入功能..................................................................................................146
7-6-4-6 BTE正向通透性移動功能 ..........................................................................................148
7-6-4-7 圖形樣板填入搭配光柵運算功能...............................................................................149
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