3.5字彩屏的应用与说明

3.5字彩屏应用十分的广泛 该资料向你详尽的介绍了彩屏的使用方法 让你轻松的学会并且快速的应用目录1.显示指标2.极限参数3.直流特性4光电特性5.接口定义与操作时序图6.应用原理框图44558007.应用编程简介8.可靠性测试199.LCD模块使用注意事项1910.模块结构图21第3页共21页1.示指标屏大小显小像素320(RGB)×240点间距0219(W)×0.219(H)毫米有效显示区域:70.08(W)×52.56(H)毫米外型尺寸:最大93(W)×70(H)×8.1(T)毫叫LCD类型a-Si TFT显小颜色:256色显示模式:TM正常白模式接∏模式:8位单片机接∏视角12:00点钟背光形式LED自色侧背光温度范围:工作-10℃~+60℃存储-20℃~+70℃模块工作电压:5V内部硬件汉字库功能(MCU可读)2极限参数2.1电压及温度极限参数Vss=0V,Ta=25°C项目符号最小值最大值单位电源电压0005.5输入电压VIVDD工作温度70VV℃匚存储温度TSTG-2070注意(1)Ta=0°C:最大50Hr(2)Ta≤40°C:最大90%RHTa≥40°C:绝对湿度必须低于40°C、90%RH下的湿度。2.2LED背光源极限参数Item符号条件标称值单位极限攴流正向电流fmnMA正向电流峰值1 mscc plus 10%45mAduty cyclc反向电压Ⅵr30功耗Pd288mw工作温度Topr20~+60℃L存储温度stg30-+70℃第4页共21页3.直流特性工作电压VD=5V,Vss=0V,T=+25℃)测试项目符号最小值典型值最大值单位输入高电平VSS+2.4VDD输入低电平VSSVSS+0. 8 V输出高电VSS-2.VDD输出低电平VSSVSS+0.4V4.光电特性ItemSyinbol Condition Min TvMaxLnitRemarkT40B50View anglesCR≥10DegreeNote 2EL50台R60Contrast ratioCR350Note1.3TResponse Time25CmsNotel 4lott0.2600.3100.360White0.20.3330383X0.5740.6210.671REDChromaticity0.3180.3680.18NotesGREENA X0.3000.3500.4000.5000.500.6000.0930.1430.193BLUE0.0690.190.169UniformityU/Notol6NTSCNotc 5Luminance150200cd/'mNotel?Note 1: Definition of optical measurement systemPhato detect。rPhoto detectorFleldContrast ratioFieldLuminanceSR-3AChromaticity500mmLum UniformityTFT-LCD ModuleResponse Time3M-7ALCD PaneThe center of the screen第5页共21页Note 2: Definition of viewing angle range and measurement systemd=90°Normal line 12 o'clock directione==0=180d=01/ Active AreaΦ=270°6 clock directionNote 3: Defin ition of contrast ratiouminance measured when LCD is on the"White"stateContrast ratIo(CR)Luminance measured when LCD is on the"Black"stateWhite state": The state is that the lCd is driven by white"Black state": The state is that the LCD is driven by Blackwhite To be determined black To be determinedNote 4: Definition of Response time第6页共21页White ( TFT OFF)Black (TFT ON)White (TFT OFF100%90%10NNote 5: Definition of color chromaticity(CIE1931)Color coordinates measured at center point of LCDNote 6: Definition of Luminance UniformityLuminance Uniformity(U)=Lmin/Lmax/6L/3max: The measured maximum luminance of all measurement positionLmin: The measured minimum luminance of all measurement positionNote 7: Definition of luminanceMeasure the luminance of white state at center point第7页共21页接口定义与操作时序图接口定义管脚符电平功能GNDGND电源地VCCP5V电源输入DIⅡ/L指令/数据选择(:数据;L:指令)RH/LCD写使能(下降沿有效)6PCD读使能(下降沿有效)DBO数据总线DBIIL数据总线DB2数据总线10DB3H/L数据总线DB4H/L数据总线DB5H/L数据总线13DB6H/L数据总线14DB7H/T数据总线H/LLCD片选16GSO字库芯片串行数据翰输出GCSH/L字库芯片片选(低电平有效)18GSI厍芯片串行数据输入GSCLK∏L字库芯片串行时钟输入20BLENH/L背光控制(H:ON;L:OFF)第8页共21页字库芯片操作时序CsPuuuulLLuLULLWLLLuL山u山IrE truction24-BiA』ressMS巳ta out 1Data cut 2High InpedanceMS并行操作时序参数符号最小值最大值单位指令数据建立时间100ns[指令数据保持时间10nsCE,RD,WR脉冲宽度te,tR,twR80ns数据建立时间80ns数据保持时间e40存取时间taco150ns输出保持时间toir1050nstLDtETHtLe tRD,trtD忑0A-Da[ WPITEJ第9页共21页6.应用原理框图P3.7RDL模块P3TR8051MCUF3.6PlF1.1TB2音F1.6P1IBTBLEsT各注:1.MCU端的IO口由用户指定2.LCD的控制)式可采用直接控制(8080时序)或间接控制(8080时序)3.如果MCU不需要读取LCD显示RAM中的数据,请将/RD直接接高电平。7.应用编程简介7.1LCD点排列示意图□口口口口口0,0B19.0320(RGB)非2400,239)□口口口口口第10页共21页