【正文】 2)顯示控制電路的參數(shù)對(duì)溫度的反應(yīng)有一定的影響，還需要進(jìn)一步研究 ，提高其精確度和穩(wěn)定性，使之更加適用于各種環(huán)境溫度系統(tǒng)和顯示要求。 USE 。 Q: OUT STD_LOGIC_VECTOR(7 DOWNTO 0) )。 SIGNAL DATALOCK,EN,RST1:STD_LOGIC。 variable i :INTEGER RANGE 0 TO 511:=0 。 設(shè) CONSTANT BULU:STATUS:=((00100000),(00000000),(00100000),(10000000),(00100000),(01000000), (00100000),(00100000),(00100000),(00010000),(00100000),(00001100),(10100000),(00000011), (01111111),(00000000),(01010000),(00000001),(00100000),(00000110),(00100000),(00001000), (00100000),(00110000),(00100000),(01100000),(00100000),(11000000),(00100000),(01000000), (00000000),(00000000),計(jì) ； (01000000),(00000000),(00110000),(00000010),(00010000),(00000010),(00010010), (00000010),(01011100),(00000010),(01010100),(00000010),(01010000),(01000010), (01010001),(10000010),(01011110),(01111111),(11010100),(00000010),(01010000), 北京化工大學(xué)北方學(xué)院畢業(yè)設(shè)計(jì)（論文） 27 (00000010),(00011000),(00000010),(01010111),(00000010),(00110010),(00000010), (00010000),(00000010),(00000000),(00000000)； (00000000),(00000000),(00000000),(00000000),(00000000),(00000000),(00000000),(00000000), (00000000),(00000000),(00000000),(00000000),(00000000),(00000000),(00000000),(00000000), (00000000),(00000000),(00000000),(00000000),(00000000),(00000000),(00000000),(00000000), (00000000),(00000000),(00000000),(00000000),(00000000),(00000000),(00000000),(00000000), (00000000),(00000000),(00000000),(00000000),(00000000),(00000000),(00000000),(00000000), (00000000),(00000000),(00000000),(00000000),(00000000),(00000000),(00000000),(00000000), (00000000),(00000000),(00000000),(00000000),(00000000),(00000000),(00000000),(00000000), (00000000),(00000000),(00000000),(00000000),(00000000),(00000000),(00000000),(00000000), (00100000),(00010000),(00110000),(00010011),(10101100),(00010001),(01100011), (01001001),(00100000),(00101001),(00011000),(10010001),(00000010),(10001100), (10000011),(01000011),(01111110),(01000000),(10000011),(00100011),(01000010), (00010100),(01110010),(00011000),(01001110),(01100110),(11000000),(11000001), (01000000),(01000000),(00000000),(00000000),信 (00000000),(00000000),(11100000),(00001111),(00010000),(00010000),(00001000),(00100000), (00001000),(00100000),(00010000),(00010000),(11100000),(00001111),(00000000),(00000000),0 (00000000),(00000000),(01110000),(00110000),(00001000),(00101000),(00001000), (00100100),(00001000),(00100010),(10001000),(00100001),(01110000),(00110000), (00000000),(00000000),2 (01000010),(00010000),(01000010),(00010000),(11111110),(00001111),(01000010), (10001000),(01000010),(01001001),(11100000),(00100000),(00000000),(00011000), (11111111),(00000111),(00000000),(00100000),(01000010),(00100000),(01000010), (。 CONSTANT WORD:STATUS:=((00010000),(00000100),(01100000),(00000100),(00000001),(11111111), (11000110),(00000000),(00110000),(00000000),(00000010), (00000000), 北京化工大學(xué)北方學(xué)院畢業(yè)設(shè)計(jì)（論文） 23 (11100010), (00000111), (00100010), (00000010), (00100010), (00000010), (11100010), (00000111),(00000010), (01000000), (00000010), (10000000), (11111110), (01111111),(00000010), (00000000), (00000010), (00000000), (00000000), (00000000), 北 (00000100),(00000000),(00000100),(00000000),(11100100),(01111111), (00100100),(00000100),(00100100),(00000101),(01100100),(00000101), (10110100),(00000101),(00101111),(01111111),(00100100),(00000101), ((10100100),(00000101),(01100100),(00000101),(00100100),(00100101), (00100100),(01000100),(11100110),(00111111),(00000100),(00000000), (00000000),(00000000), 京 (00010000),(00000100),(00010010),(00000010),(10010010),(00000001), (01110010),(0000000000),(11111110),(11111111),(01010001),(00000000), (10010001),(00000100),(00000000),(00000100),(00100010),(00000100), (11001100),(00000010),(0000000000),(00000010),(0000000000),(00000010), (11111111),(111111111),(00000000),(000000001),(00000000),(00000001), (000000000),(00000000), 化 (00001000),(00000001),(00001000),(010000001),(10001000),(10000000), (11111111),(01111111),(01001000),(00000000),(00101000),(01000000), (00000000),(010000000),(11001000),(00100000),(01001000),(00010011), (01001000),(00001100),(01111111),(00001100),(01001000),(00010010), (11001000),(001000001),(01001000),(01100000),(00001000),(00100000), (00000000),(00000000), 工 ， (00000000),(00000000),(00000000),(00000000),(11111000),(00001111),(01001000), (00000100),(01001000),(00000100),(01001000),(00000100),(01001000),(00000100), (11111111),(00111111),(01001000),(01000100),(01001000),(01000100),(01001000), (01000100),(01001000),(01000100),(11111000),(01001111),(00000000),(01000000), (00000000),(01110000),(00000000),(00000000),大 。 SIGNAL XPAGE:STD_LOGIC_VECTOR(7 DOWNTO 0):=10111000。 ARCHITECTURE BEHAV OF LCD IS TYPE STATES IS(ST0,ST1,ST2,ST3,ST4,ST5,ST6,ST7, ST8,ST9,ST10,ST11,ST12,ST13,ST14,ST15,ST16) 。 RS,RW,CS1,CS2,E: OUT STD_LOGIC。 USE 。 由于本人的時(shí)間和能力有限，對(duì)于 FPGA顯示控制系統(tǒng)中的應(yīng)用只是做了一些嘗試性的探索和及其簡(jiǎn)單的應(yīng)用工作，還存在很多不完善的地方，仍有許多方面有待進(jìn)一步深入研究開發(fā)； (1)驅(qū)動(dòng)芯片可以設(shè)計(jì)成通過行列驅(qū)動(dòng)信號(hào)選擇工作模式的形式。隨著 EDA技術(shù)、制作工藝的提高和設(shè)計(jì)方法的改進(jìn)， FPGA技術(shù)必將飛速發(fā)展。 (3)采用 VHDL 語(yǔ) 言和 MAX+PLUSⅡ 軟件對(duì)各個(gè)功能模塊編程和仿真，并將北京化工大學(xué)北方學(xué)院畢業(yè)設(shè)計(jì)（論文） 21 全部程序經(jīng)單片機(jī)配置電路下載到 FPGA 芯片中。顯示控制系統(tǒng)的控制核心部分包括顯示驅(qū)動(dòng)電路和顯示控制電路，外圍電路包括配置電路和電源輔助電路。設(shè)計(jì)中選用了 51 單片機(jī)作為微處理器，設(shè)計(jì)的邏輯控制系統(tǒng)結(jié)構(gòu)適用于不同規(guī)格大小的顯示屏。根據(jù)前面所說的液晶顯示屏與 DDRAM 的對(duì)應(yīng)關(guān)系，可以構(gòu)造不同的數(shù)據(jù)來顯示不同的圖形和漢字。方法就是向 RAM 的所有單元寫入 0 值。 北京化工大學(xué)北方學(xué)院畢業(yè)設(shè)計(jì)（論文） 16 圖 3 液晶顯示器的接口電路 由于 CS0 的地址范圍為 280H－ 283H，由接口電路的設(shè)計(jì)可得液晶屏的相關(guān)地址，如下表。