单相桥式逆变电路为例：S1～S4是桥式电路的4个臂，由电力电子器件及辅助电路组成。S1、S4闭合，S2、S3断开时，负载电压uo为正S1；S1、S4断开，S2、S3闭合时，uo为负，把直流电变成了交流电。改变两组开关切换频率，可改变输出交流电频率。图5-1 逆变电路及其波形举例电阻负载时，负载电流io和uo的波形相同，相位也相同。阻感负载时，io滞后于uo，波形也不同（图5-1b）。t1前：S1、S4通，uo和io均为正。t1时刻断开S1、S4，合上S2、S3，uo变负，但io不能立刻反向。io从电源负极流出，经S2、负载和S3流回正极，负载电感能量向电源反馈，io逐渐减小，t2时刻降为零，之后io才反向并增大 （2）换流方式分类换流——电流从一个支路向另一个支路转移的过程，也称换相。开通：适当的门极驱动信号就可使其开通。关断：全控型器件可通过门极关断。半控型器件晶闸管，必须利用外部条件才能关断，一般在晶闸管电流过零后施加一定时间反压，才能关断。研究换流方式主要是研究如何使器件关断。本章换流及换流方式问题最为全面集中，因此在本章讲述1、器件换流利用全控型器件的自关断能力进行换流（Device Commutation）。2、电网换流由电网提供换流电压称为电网换流（Line Commutation）。可控整流电路、交流调压电路和采用相控方式的交交变频电路，不需器件具有门极可关断能力，也不需要为换流附加元件。3、负载换流由负载提供换流电压称为负载换流（Load Commutation）。负载电流相位超前于负载电压的场合，都可实现负载换流。负载为电容性负载时，负载为同步电动机时，可实现负载换流。
上传时间： 2013-10-15
上传用户：qingdou
移相全桥零电压PWM软开关变换器是目前中大功率开关电源的主流，本文对功率变换部分，输出整流滤波部分在时域上进行了详细分析，并且重点介绍了超前臂和知滞后臂的谐振过程，分析占空比丢失的原因，及其关键元件参数对电路的影响。
上传时间： 2013-11-16
上传用户：www240697738
LY6206系列是一款高精度,低功耗,3引脚LDO高电压调整器芯片,并采用CMOS工艺和激光微调技术. 在输出电流较大的情况下,输入输出压差也能很小。 LY6206系列芯片内部包括一个电流限制电路,一个驱动三极管,一个高精度参考电压源和一个误差校正电路,可使用低ESR陶瓷电容.电流限制器的foldback电路可为电流限制器和输出引脚提供短路保护。通过激光微调技术,可设定芯片的输出电压,其范围是1.2V至5.0V,间隔100mV,输出电压1.2V-3.6V封装SOT23-3/SOT23-5/SOT89-3
上传时间： 2013-11-15
上传用户：thuyenvinh
基于stc12c5a60s2制作的电压数模转换实验，内带电路及测试程序。讲解详尽。值得下载学习。
上传时间： 2013-10-27
上传用户：墙角有棵树
带中文字库的128X64是一种具有4位/8位并行、2线或3线串行多种接口方式，内部含有国标一级、二级简体中文字库的点阵图形液晶显示模块；其显示分辨率为128×64, 内置8192个16*16点汉字，和128个16*8点ASCII字符集.利用该模块灵活的接口方式和简单、方便的操作指令，可构成全中文人机交互图形界面。可以显示8×4行16×16点阵的汉字. 也可完成图形显示.低电压低功耗是其又一显著特点。由该模块构成的液晶显示方案与同类型的图形点阵液晶显示模块相比，不论硬件电路结构或显示程序都要简洁得多，且该模块的价格也略低于相同点阵的图形液晶模块。 基本特性: 低电源电压（VDD:+3.0--+5.5V） 显示分辨率:128×64点 内置汉字字库，提供8192个16×16点阵汉字(简繁体可选) 内置 128个16×8点阵字符 2MHZ时钟频率 显示方式：STN、半透、正显 驱动方式：1/32DUTY，1/5BIAS 视角方向：6点 背光方式：侧部高亮白色LED，功耗仅为普通LED的1/5—1/10 通讯方式：串行、并口可选 内置DC-DC转换电路，无需外加负压 无需片选信号，简化软件设计 工作温度: 0℃ - +55℃ ,存储温度: -20℃ - +60℃ 12864（带字库汉字显示演示程序） ;*************************************************************************** ;* sxj1974@163.com (51c51 test web) www.8951.com * ;* Create by :石学军 www.51c51.com 更多例程请登陆网站 * ;*************************************************************************** RS EQU P2.0 RW EQU P2.1 E EQU P2.2 PSB EQU P2.3 RST EQU P2.5 ;----------------------------------------------- LCD_X EQU 30H LCD_Y EQU 31H COUNT EQU 32H COUNT1 EQU 33H COUNT2 EQU 34H COUNT3 EQU 35H ;----------------------------------------------- LCD_DATA EQU 36H LCD_DATA1 EQU 37H LCD_DATA2 EQU 38H STORE EQU 39H ;----------------------------------------------- ORG 0000H LJMP MAIN ORG 0100H ;----------------------------------------------- MAIN: MOV SP,#5FH CLR RST ;复位 LCALL DELAY4 SETB RST NOP SETB PSB ;通讯方式为8位数据并口 ;********************初始化********************** LGS0: MOV A,#34H ;34H--扩充指令操作 LCALL SEND_I MOV A,#30H ;30H--基本指令操作 LCALL SEND_I MOV A,#01H ;清除显示 LCALL SEND_I MOV A,#06H ;指定在资料写入或读取时，光标的移动方向 LCALL SEND_I ;DDRAM 的地址计数器(AC)加1 MOV A,#0CH ;开显示,关光标,不闪烁 LCALL SEND_I ;=============================================== TU_PLAY1: MOV DPTR,#TU_TAB1 ;显示图形 LCALL PHO_DISP LCALL DELAY3 ;================================================= ;;显示汉字和字符 ;加入80ms的延时，使你能够看清楚显示的过程 ;根据汉字显示坐标分段写入（顺序写入） ;================================================= HAN_WR2: LCALL CLEAR_P HAN_WR2A: MOV DPTR,#TAB1A ;显示汉字和字符 MOV COUNT,#10H ;地址计数器设为16。 MOV A,#80H ;第一行起始地址 LCALL SEND_I LCALL QUSHU HAN_WR2B: MOV DPTR,#TAB1B ;显示汉字和字符 MOV COUNT,#10H ;地址计数器设为16。 MOV A,#90H ;第二行起始地址 LCALL SEND_I LCALL QUSHU HAN_WR2C: MOV DPTR,#TAB1C ;显示汉字和字符 MOV COUNT,#10H ;地址计数器设为16。 MOV A,#88H ;第三行起始地址 LCALL SEND_I LCALL QUSHU HAN_WR2D: MOV DPTR,#TAB1D ;显示汉字和字符 MOV COUNT,#10H ;地址计数器设为16。 MOV A,#98H ;第四行起始地址 LCALL SEND_I LCALL QUSHU LCALL DELAY3 LCALL FLASH LCALL CLEAR_P JMP TU_PLAY2 ;---------------------------------------------- ;TU_PLAY1: MOV DPTR,#TU_TAB1 ;显示图形 LCALL PHO_DISP LCALL DELAY3 ;---------------------------------------------- TU_PLAY2: MOV DPTR,#TU_TAB2 ;显示图形 LCALL PHO_DISP LCALL DELAY3 ;---------------------------------------------- TU_PLAY3: MOV DPTR,#TU_TAB4 ;显示图形 LCALL PHO_DISP LCALL DELAY3 ;----------------------------------------------- ;显示点阵 ;----------------------------------------------- LATPLAY1: MOV A,#01H ;清屏 LCALL SEND_I MOV LCD_DATA1,#0CCH ;显示点阵 MOV LCD_DATA2,#0CCH LCALL LAT_DISP LCALL DELAY3 LCALL CLEAR_P KU_PLAY2: LJMP TU_PLAY1 ;=============================================== ;全屏显示图形子程序 ;=============================================== PHO_DISP: MOV COUNT3,#02H MOV LCD_X,#80H PHO_DISP1: MOV LCD_Y,#80H MOV COUNT2,#20H PHO_DISP2: MOV COUNT1,#10H LCALL WR_ZB PHO_DISP3: CLR A MOVC A,@A+DPTR LCALL SEND_D INC DPTR DJNZ COUNT1,PHO_DISP3 INC LCD_Y DJNZ COUNT2,PHO_DISP2 MOV LCD_X,#88H DJNZ COUNT3,PHO_DISP1 MOV A,#36H LCALL SEND_I MOV A,#30H LCALL SEND_I RET ;---------------------------------------------- CLRRAM: MOV LCD_DATA1,#00H ;GDRAM写0子程序 MOV LCD_DATA2,#00H LCALL LAT_DISP RET ;============================================== ;显示点阵子程序 ;============================================== LAT_DISP: MOV COUNT3,#02H MOV LCD_X,#80H LAT_DISP1: MOV LCD_Y,#80H CLR F0 MOV COUNT2,#20H LAT_DISP2: MOV COUNT1,#10H LCALL WR_ZB LAT_DISP3: JB F0,LAT_DISP32 MOV LCD_DATA,LCD_DATA1 AJMP LAT_DISP31 LAT_DISP32: MOV LCD_DATA,LCD_DATA2 LAT_DISP31: MOV A,LCD_DATA LCALL SEND_D DJNZ COUNT1,LAT_DISP31 INC LCD_Y CPL F0 DJNZ COUNT2,LAT_DISP2 MOV LCD_X,#88H DJNZ COUNT3,LAT_DISP1 MOV A,#36H LCALL SEND_I MOV A,#30H LCALL SEND_I RET ;--------------------------------------------- WR_ZB: MOV A,#34H LCALL SEND_I MOV A,LCD_Y LCALL SEND_I MOV A,LCD_X LCALL SEND_I MOV A,#30H LCALL SEND_I RET ;=============================================== FLASH: MOV A,#08H ;关闭显示 LCALL SEND_I LCALL DELAY5 MOV A,#0CH ;开显示,关光标,不闪烁 LCALL SEND_I LCALL DELAY5 MOV A,#08H ;关闭显示 LCALL SEND_I LCALL DELAY5 MOV A,#0CH ;开显示,关光标,不闪烁 LCALL SEND_I LCALL DELAY5 MOV A,#08H ;关闭显示 LCALL SEND_I LCALL DELAY5 RET ;================================================== ;清屏 ;================================================== CLEAR_P: MOV A,#01H ;清屏 LCALL SEND_I MOV A,#34H LCALL SEND_I MOV A,#30H LCALL SEND_I RET ;================================================== ;查表取数据送显示 ;================================================== QUSHU: CLR A MOVC A,@A+DPTR ;查表取数据 LCALL SEND_D ;送显示 INC DPTR LCALL DELAY4 ;延时80ms, DJNZ COUNT,QUSHU RET ;=============================================== ;写数据子程序 ;RS=1,RW=0,E=高脉冲,D0-D7=数据 ;=============================================== SEND_D: LCALL CHK_BUSY ;写数据子程序 SETB RS CLR RW MOV P0,A SETB E NOP NOP CLR E RET ;=============================================== ;写指令子程序 ;RS=0,RW=0,E=高脉冲,D0-D7=指令码 ;=============================================== SEND_I: LCALL CHK_BUSY CLR RS CLR RW MOV P0,A SETB E NOP NOP CLR E RET ;================================================ ;读数据子程序 ;RS=1,RW=1,E=H,D0-D7=数据 ;================================================ READ_D: LCALL CHK_BUSY ;读数据子程序 SETB RS SETB RW SETB E NOP MOV A,P0 CLR E MOV STORE,A RET ;================================================ ;;测忙碌子程序 ;RS=0,RW=1,E=H,D0-D7=状态字 ;================================================ CHK_BUSY: MOV P0,#0FFH ;测忙碌子程序 CLR RS SETB RW SETB E JB P0.7,$ CLR E RET ;================================================ ;延时子程序 DELAY3: MOV R5,#16H DEL31: MOV R6,#100 DEL32: MOV R7,#0FFH DEL33: DJNZ R7,DEL33 DJNZ R6,DEL32 DJNZ R5,DEL31 RET DELAY2: MOV R6,#0CH DEL21: MOV R7,#18H DEL22: DJNZ R7,DEL22 DJNZ R6,DEL21 RET DELAY1: MOV R6,#06H DEL11: MOV R7,#08H DEL12: DJNZ R7,DEL12 DJNZ R6,DEL11 RET DELAY4: MOV R6,#100 DEL41: MOV R7,#200 DEL42: DJNZ R7,DEL42 DJNZ R6,DEL41 RET DELAY5: MOV R5,#05H DEL51: MOV R6,#100 DEL52: MOV R7,#0FFH DEL53: DJNZ R7,DEL53 DJNZ R6,DEL52 DJNZ R5,DEL51 RET ;*********************************************** TAB1: TAB1A: DB ' 51单片机学习网（深圳学林电子有限公司） ' ;显示在第一行 TAB1C: DB '自学单片机第一站' ;显示在第三行 TAB1B: DB ' WWW.8951.COM ' ;显示在第二行 TAB1D: DB 'TEL 755-89956892' ;显示在第四行 ;*-------------------------------------------------------------------- * ;* Bitmap点阵数据表 * ;* 图片: E:\图形8.bmp,横向取模左高位,数据排列:从左到右从上到下 * ;* 图片尺寸: 128 * 64 * ;*-------------------------------------------------------------------- * TU_TAB1: ; 数据表 db 0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh db 80h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db 80h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db 80h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db 80h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db 80h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db 80h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db 80h, 00h, 00h, 00h, 00h, 3Ch, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db 80h, 00h, 00h, 00h, 00h, 7Fh, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db 80h, 00h, 00h, 00h, 00h,0FFh,0C0h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db 80h, 00h, 00h, 00h, 01h,0BFh,0F8h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db 80h, 00h, 00h, 00h, 01h,0FFh,0DCh, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db 80h, 00h, 00h, 00h, 01h, 1Fh,0FEh, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db 80h, 00h, 00h, 00h, 01h,0DFh,0FFh, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db 80h, 00h, 00h, 00h, 00h,0FFh,0FFh, 19h, 8Ch, 03h, 06h, 00h, 18h, 00h,0FFh,0E1h db 80h, 00h, 00h, 00h, 00h, 3Fh,0FFh, 0Ch,0CCh, 03h, 06h, 00h, 18h, 00h,0FFh,0E1h db 80h, 00h, 00h, 00h, 00h, 7Fh,0FFh, 04h, 58h, 03h, 06h, 01h,0FFh,0C0h, 00h,0C1h db 80h, 00h, 00h, 00h, 00h, 7Fh,0DAh, 3Fh,0FEh, 0Fh,0DFh,0C1h,0FFh,0C0h, 01h, 81h db 80h, 00h, 00h, 00h, 00h, 7Fh, 8Ch, 3Fh,0FEh, 0Fh,0DFh,0C1h, 98h,0C0h, 07h, 01h db 80h, 00h, 00h, 00h, 00h, 7Fh,0B8h, 30h, 06h, 03h, 06h, 01h, 98h,0C0h, 06h, 01h db 80h, 00h, 00h, 00h, 00h,0FEh,0C0h, 0Fh,0F8h, 03h, 8Eh, 01h,0FFh,0C3h,0FFh,0F9h db 80h, 00h, 00h, 00h, 00h, 7Eh, 00h, 0Fh,0F8h, 07h,0CFh, 01h, 98h,0C3h,0FFh,0F9h db 80h, 00h, 00h, 00h, 00h, 7Fh, 00h, 00h, 60h, 07h, 5Fh, 81h, 98h,0C0h, 06h, 01h db 80h, 00h, 00h, 00h, 00h, 7Fh, 80h, 3Fh,0FEh, 0Fh, 36h,0C1h,0FFh,0C0h, 06h, 01h db 80h, 00h, 00h, 00h, 00h, 1Fh, 80h,0BFh,0FEh, 0Bh, 36h, 61h,0FFh,0C0h, 06h, 01h db 80h, 00h, 00h, 00h, 00h, 1Fh,0C7h, 00h,0C0h, 03h, 66h, 21h, 98h, 30h, 06h, 01h db 80h, 00h, 00h, 00h, 15h, 5Fh,0C7h, 00h,0C0h, 03h, 06h, 00h, 18h, 30h, 06h, 01h db 80h, 00h, 02h,0E0h, 06h, 7Fh,0CEh, 03h,0C0h, 03h, 06h, 00h, 1Fh,0F0h, 1Eh, 01h db 80h, 00h, 04h, 54h, 4Fh,0FFh,0FCh, 01h, 80h, 03h, 06h, 00h, 0Fh,0E0h, 0Ch, 01h db 80h, 00h, 03h,0FDh, 3Fh,0FFh,0D9h,0C0h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db 80h, 00h, 1Dh,0FFh,0FFh,0FFh, 87h, 80h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db 80h, 00h, 2Bh,0FFh,0F8h, 7Fh, 06h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db 80h, 00h, 3Fh,0BFh,0F8h, 09h, 0Fh, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db 80h, 00h, 1Fh, 9Fh,0F0h, 00h,0BCh, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db 9Dh,0FEh, 1Fh, 8Fh,0F0h, 00h,0F8h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db 9Fh,0FCh, 17h, 8Fh,0F0h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db 81h,0FFh,0CFh, 9Fh,0E0h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db 82h,0FFh,0FFh, 9Ch, 80h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db 81h, 7Fh,0FFh,0FCh, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db 80h, 6Fh,0FEh, 30h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db 80h, 03h,0FCh, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db 80h, 00h, 34h, 14h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db 80h, 00h, 0Eh, 18h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db 80h, 00h, 02h, 30h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db 80h, 00h, 01h,0E0h, 00h, 00h, 7Fh, 04h, 00h, 3Fh, 82h, 00h, 00h, 00h, 00h, 01h db 80h, 00h, 00h, 00h, 00h, 00h, 7Fh, 0Ch, 00h, 3Fh, 86h, 00h, 00h, 00h, 00h, 01h db 80h, 00h, 00h, 00h, 00h, 00h, 7Fh, 1Ch, 00h, 3Fh, 8Eh, 00h, 00h, 00h, 00h, 01h db 83h,0BBh, 9Dh,0DCh,0EEh,0E0h, 70h, 7Ch, 38h, 38h, 3Eh, 00h,0E0h, 38h, 3Bh, 31h db 83h,0BBh, 9Dh,0DCh,0EEh,0E0h, 70h, 7Ch, 3Ch, 38h, 3Eh, 00h,0F0h, 7Ch, 3Fh,0F9h db 83h,0BBh, 9Dh,0DCh,0EEh,0E0h, 76h, 1Ch, 7Eh, 3Bh, 0Eh, 01h,0F8h,0FEh, 3Fh,0F9h db 83h,0BBh, 9Dh,0DCh,0EEh,0E0h, 7Fh, 1Ch, 76h, 3Fh, 8Eh, 01h,0D8h,0EEh, 3Bh,0B9h db 83h,0BBh, 9Dh,0DCh,0EEh,0E0h, 7Fh, 1Ch, 76h, 3Fh, 8Eh, 01h,0D8h,0EEh, 3Bh,0B9h db 83h,0BBh, 9Dh,0DCh,0EEh,0E0h, 77h, 1Ch, 76h, 3Bh, 8Eh, 01h,0D8h,0EEh, 3Bh,0B9h db 81h,0BBh, 0Dh,0D8h, 6Eh,0C0h, 07h, 1Ch, 70h, 03h, 8Eh, 01h,0C0h,0EEh, 3Bh,0B9h db 81h,0ABh, 0Dh, 58h, 6Ah,0C0h, 07h, 1Ch, 70h, 03h, 8Eh, 01h,0C0h,0EEh, 3Bh,0B9h db 81h,0ABh, 0Dh, 58h, 6Ah,0C0h, 77h, 1Ch, 70h, 3Bh, 8Eh, 01h,0C0h,0EEh, 3Bh,0B9h db 81h,0ABh, 0Dh, 58h, 6Ah,0C0h, 77h, 1Ch, 76h, 3Bh, 8Eh, 01h,0D8h,0EEh, 3Bh,0B9h db 81h,0EFh, 0Fh, 78h, 7Bh,0C0h, 77h, 1Ch, 76h, 3Bh, 8Eh, 01h,0D8h,0EEh, 3Bh,0B9h db 81h,0EFh, 0Fh, 78h, 7Bh,0DCh, 77h, 1Ch, 76h, 3Bh, 8Eh, 39h,0D8h,0EEh, 3Bh,0B9h db 81h,0EFh, 0Fh, 78h, 7Bh,0DCh, 7Fh, 1Ch, 7Eh, 3Fh, 8Eh, 39h,0F8h,0FEh, 3Bh,0B9h db 81h,0EFh, 0Fh, 78h, 7Bh,0DCh, 3Eh, 1Ch, 3Ch, 1Fh, 0Eh, 38h,0F0h, 7Ch, 3Bh,0B9h db 81h,0EFh, 0Fh, 78h, 7Bh,0DCh, 1Ch, 1Ch, 3Ch, 0Eh, 0Eh, 38h,0F0h, 78h, 3Bh,0B9h db 80h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh ;*-------------------------------------------------------------------- * ;* Bitmap点阵数据表 * ;* 图片: E:\图形12.bmp,横向取模左高位,数据排列:从左到右从上到下 * ;* 图片尺寸: 128 * 64 * ;*-------------------------------------------------------------------- * TU_TAB2: ; 数据表 db 40h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 03h, 65h,0E8h, 80h, 00h, 01h db 9Ah,0D6h,0B4h, 42h, 00h, 00h, 00h, 00h, 00h, 00h, 34h,0DAh,0D0h, 00h, 00h, 01h db0A4h, 00h, 02h, 10h, 6Bh, 30h, 00h, 00h, 00h, 00h, 8Bh,0FFh, 30h, 00h, 00h, 01h db 42h,0D6h,0B0h, 42h, 80h, 00h, 00h, 00h, 00h, 16h, 77h,0FEh,0C0h, 00h, 00h, 01h db 42h,0D6h,0B0h, 42h, 80h, 00h, 00h, 00h, 00h, 16h, 77h,0FEh,0C0h, 00h, 00h, 01h db0B9h, 20h, 04h, 00h, 00h, 02h, 10h, 00h, 00h, 00h,0BCh,0BCh, 00h, 00h, 00h, 01h db 46h,0D6h,0B1h,0ACh, 6Bh, 30h, 00h, 00h, 02h, 29h,0CBh, 40h, 00h, 00h, 00h, 01h db0FFh,0F9h, 04h, 01h, 00h, 00h, 00h, 00h, 01h, 16h,0B4h,0A0h, 00h, 00h, 00h, 01h db0FFh,0FFh,0F2h, 50h, 00h, 40h, 00h, 00h, 00h, 29h, 4Bh, 00h, 00h, 00h, 00h, 01h db0FFh,0FFh,0F2h, 50h, 00h, 40h, 00h, 00h, 00h, 29h, 4Bh, 00h, 00h, 00h, 00h, 01h db0FFh,0FFh,0BDh, 82h, 94h, 00h, 40h, 00h, 00h,0C9h, 30h, 02h, 00h, 00h, 00h, 01h db0FFh,0FFh,0FBh,0B0h, 00h, 08h, 00h, 00h, 05h, 16h, 44h, 40h, 00h, 00h, 00h, 01h db0FFh,0FFh,0FFh,0EFh, 90h, 40h, 00h, 00h, 00h, 21h, 00h, 04h,0C8h, 30h, 00h, 01h db0A5h,0FFh,0FFh,0FDh, 6Bh, 00h, 00h, 00h, 00h,0C8h, 00h, 99h, 16h,0FAh, 40h, 01h db0A5h,0FFh,0FFh,0FDh, 6Bh, 00h, 00h, 00h, 00h,0C8h, 00h, 99h, 16h,0FAh, 40h, 01h db 82h, 2Fh,0FFh,0FFh,0E8h, 84h, 00h, 00h, 00h, 00h, 08h, 00h,0DFh,0FFh,0ECh, 01h db 24h,0C1h, 7Fh,0FFh,0F4h, 30h, 00h, 00h, 00h, 00h, 00h,0A7h,0FFh,0FFh,0FCh, 01h db 42h, 28h, 05h,0BFh,0FBh, 80h, 00h, 00h, 00h, 00h, 04h, 1Bh,0FFh,0FFh,0FFh, 81h db 98h,0C1h, 4Ah, 53h,0ECh, 48h, 00h, 00h, 00h, 00h, 40h, 7Fh,0FFh,0FFh,0FFh,0E1h db 98h,0C1h, 4Ah, 53h,0ECh, 48h, 00h, 00h, 00h, 00h, 40h, 7Fh,0FFh,0FFh,0FFh,0E1h db 42h, 28h, 00h, 0Ch, 77h, 82h, 00h, 00h, 00h, 00h, 33h,0BFh,0FFh,0FFh,0FFh, 89h db 18h,0C1h, 4Ah, 51h, 9Bh, 74h, 00h, 00h, 00h, 00h, 04h,0FFh, 3Fh,0FFh,0DFh,0F1h db0C2h, 28h, 00h, 0Ch, 04h, 80h, 00h, 00h, 00h, 00h, 40h,0FEh, 1Fh,0F9h,0C3h,0F9h db 1Ah,0D6h,0B5h,0A1h, 6Bh, 75h, 80h, 00h, 00h, 00h, 8Fh,0FCh, 3Fh,0F2h, 0Fh, 1Fh db 1Ah,0D6h,0B5h,0A1h, 6Bh, 75h, 80h, 00h, 00h, 00h, 8Fh,0FCh, 3Fh,0F2h, 0Fh, 1Fh db0C5h, 29h, 79h, 8Ch, 00h, 88h, 00h, 00h, 00h, 00h, 03h,0F8h, 1Fh,0C8h, 52h, 81h db 22h,0FFh,0FFh,0F2h, 6Bh, 35h, 80h, 00h, 00h, 00h, 37h,0C2h, 3Fh,0FBh,0FCh, 09h db 9Ah,0FFh,0FFh,0FFh, 00h, 48h, 00h, 00h, 00h, 00h, 07h,0D8h, 1Fh,0FFh,0E3h, 81h db 9Ah,0FFh,0FFh,0FFh, 00h, 48h, 00h, 00h, 00h, 00h, 07h,0D8h, 1Fh,0FFh,0E3h, 81h db 47h,0FFh,0FFh,0FFh,0F3h, 35h, 80h, 00h, 00h, 00h, 8Fh,0C1h, 0Fh,0FFh,0ACh, 01h db0B9h,0FFh,0FFh,0FFh,0FCh, 4Ah, 20h, 00h, 00h, 00h, 0Fh,0A4h, 07h,0FEh, 40h, 01h db 5Fh,0FFh,0C7h,0FFh,0FCh,0B5h, 80h, 00h, 00h, 00h, 4Fh,0DAh,0FFh,0F8h, 00h, 01h db0A7h,0FFh,0B7h,0FFh,0FFh, 8Ah, 20h, 00h, 00h, 00h, 0Fh,0FFh,0EFh, 40h, 00h, 01h db0A7h,0FFh,0B7h,0FFh,0FFh, 8Ah, 20h, 00h, 00h, 00h, 0Fh,0FFh,0EFh, 40h, 00h, 01h db 7Fh,0FFh, 47h,0FDh, 7Fh,0C5h, 80h, 00h, 00h, 00h, 3Fh,0DAh,0D0h, 00h, 00h, 01h db0A7h,0FEh, 37h,0FFh, 7Ch,0FAh, 50h, 00h, 00h, 00h, 0Ch,0A4h, 08h, 00h, 00h, 01h db0DFh,0FEh, 43h,0FFh,0F8h,0C1h, 80h, 00h, 00h, 00h, 48h, 01h, 00h, 00h, 00h, 01h db 27h,0FFh, 4Bh,0FFh,0FFh,0FAh, 2Ch, 00h, 00h, 00h, 03h, 58h, 20h, 00h, 00h, 01h db 27h,0FFh, 4Bh,0FFh,0FFh,0FAh, 2Ch, 00h, 00h, 00h, 03h, 58h, 20h, 00h, 00h, 01h db 9Bh,0FFh,0C3h,0FFh,0FFh,0F1h,0C0h, 00h, 00h, 00h, 08h, 00h, 00h, 00h, 00h, 01h db 64h, 3Fh,0FDh,0FFh, 6Bh, 7Ch, 10h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db 03h,0D7h,0FFh,0FDh, 10h, 01h,0A0h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db0D8h, 29h, 4Fh,0A2h, 80h,0B5h, 90h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db0D8h, 29h, 4Fh,0A2h, 80h,0B5h, 90h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db 05h, 10h,0B0h, 4Ch, 0Bh, 08h, 40h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db0A0h,0C9h, 0Ah, 00h, 00h, 42h, 10h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db 04h, 10h, 40h, 21h, 64h, 09h,0A0h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db0A2h,0C1h, 35h, 8Ch, 00h, 44h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db0A2h,0C1h, 35h, 8Ch, 00h, 44h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db 00h, 16h, 00h, 21h, 14h, 09h,0A0h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db0A5h, 00h,0B5h, 80h, 83h, 44h, 0Ch, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db 00h, 26h, 00h, 12h, 08h, 09h,0A0h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db0DAh, 00h,0B4h, 40h, 60h, 44h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db0DAh, 00h,0B4h, 40h, 60h, 44h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db 80h,0C8h, 00h, 00h, 04h, 01h,0A0h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db0A2h, 20h, 89h, 91h, 10h, 8Ah, 10h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db 44h, 06h, 00h, 00h, 00h, 30h, 40h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db 44h, 06h, 00h, 00h, 00h, 30h, 40h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db 80h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db 80h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db 80h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db 80h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh ;*-------------------------------------------------------------------- * ;*-------------------------------------------------------------------- * ;* Bitmap点阵数据表 * ;* 图片: E:\图形13.bmp,横向取模左高位,数据排列:从左到右从上到下 * ;* 图片尺寸: 128 * 64 * ;*-------------------------------------------------------------------- * TU_TAB4: ; 漂亮姑娘看过来 db 0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh db 80h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db 80h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h db 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h db 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h db 00h, 00h, 00h, 00h, 00h, 00h, 00h, 11h,0FFh, 80h, 40h, 08h, 30h, 10h, 20h, 00h db 00h, 00h, 00h, 00h, 00h, 00h, 00h, 0Ch, 68h, 3Fh,0FFh, 08h, 30h, 11h,0F8h, 00h db 00h, 00h, 00h, 00h, 00h, 00h, 00h, 0Ch, 68h, 3Fh,0FFh, 08h, 30h, 11h,0F8h, 00h db 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h,0FFh, 00h, 00h, 7Fh,0FEh, 7Dh, 08h, 00h db 00h, 00h, 00h, 00h, 00h, 00h, 00h, 11h, 6Bh, 07h,0FCh, 16h, 30h, 2Dh,0F8h, 00h db 00h, 00h, 00h, 00h, 00h, 00h, 00h, 0Dh,0FFh, 04h, 0Ch, 16h, 30h, 2Dh, 08h, 00h db 00h, 00h, 00h, 00h, 00h, 00h, 00h, 0Ch, 00h, 3Fh,0FFh, 16h, 30h, 2Dh,0F8h, 00h db 00h, 00h, 00h, 00h, 00h, 00h, 00h, 0Ch, 00h, 3Fh,0FFh, 16h, 30h, 2Dh,0F8h, 00h db 00h, 00h, 00h, 00h, 00h, 00h, 00h, 0Ch,0FFh, 30h, 01h, 66h,0FEh, 2Dh, 26h, 00h db 00h, 00h, 00h, 00h, 00h, 00h, 00h, 1Ch, 00h, 03h,0F0h, 76h, 82h, 2Dh, 28h, 00h db 00h, 00h, 00h, 00h, 00h, 00h, 00h, 0Dh,0FFh, 82h, 11h, 08h, 82h, 11h, 10h, 00h db 00h, 00h, 00h, 00h, 00h, 00h, 00h, 0Ch, 8Bh, 04h, 11h, 16h, 82h, 2Dh, 28h, 00h db 00h, 00h, 00h, 00h, 00h, 00h, 00h, 0Ch, 8Bh, 04h, 11h, 16h, 82h, 2Dh, 28h, 00h db 00h, 00h, 00h, 00h, 00h, 00h, 00h, 0Dh, 18h,0B8h, 1Fh, 60h,0FEh, 41h,0C6h, 00h db 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h db 00h, 07h, 8Fh,0FFh, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h db 00h, 08h, 70h, 40h,0EFh, 80h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h db 00h, 08h, 70h, 40h,0EFh, 80h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h db 00h, 10h, 00h, 80h, 10h, 60h, 00h, 0Fh,0FFh, 30h, 0Ch, 00h, 80h, 00h, 00h, 00h db 00h, 20h, 18h, 38h, 20h, 60h, 00h, 00h, 60h, 08h, 0Ch, 1Fh,0FCh, 1Ch, 00h, 00h db 00h,0C0h, 64h, 45h, 00h, 60h, 00h, 03h,0FCh, 0Bh,0FFh, 00h, 80h, 3Eh, 00h, 00h db 00h,0C1h, 00h, 01h, 00h, 10h, 00h, 00h, 80h, 00h, 0Ch, 08h, 88h, 3Eh, 00h, 00h db 00h,0C1h, 00h, 01h, 00h, 10h, 00h, 00h, 80h, 00h, 0Ch, 08h, 88h, 3Eh, 00h, 00h db 01h, 01h, 00h, 00h,0C0h, 10h, 00h, 1Fh,0FFh,0BDh, 8Ch, 06h,0B0h, 3Eh, 00h, 00h db 02h, 0Eh, 18h, 1Ch,0C0h, 10h, 00h, 01h, 00h, 04h, 4Ch, 7Fh,0FEh, 1Ch, 00h, 00h db 02h, 16h, 64h, 22h, 20h, 10h, 00h, 03h,0FCh, 04h, 4Ch, 01h,0C0h, 1Ch, 00h, 00h db 02h, 16h, 64h, 22h, 20h, 10h, 00h, 03h,0FCh, 04h, 4Ch, 01h,0C0h, 1Ch, 00h, 00h db 04h,0E8h, 83h, 41h, 1Ch, 08h, 00h, 0Dh, 04h, 04h, 0Ch, 06h,0B0h, 00h, 00h, 00h db 07h, 10h, 8Fh, 47h, 03h, 88h, 00h, 11h,0FCh, 04h, 3Ch, 08h, 88h, 1Ch, 00h, 00h db 00h, 20h, 6Ch, 26h, 01h, 78h, 00h, 01h, 04h, 0Ah, 00h, 70h, 86h, 1Ch, 00h, 00h db 00h,0C0h, 18h, 1Ch, 00h, 80h, 00h, 01h,0FCh, 31h,0FFh, 00h, 80h, 00h, 00h, 00h db 00h,0C0h, 18h, 1Ch, 00h, 80h, 00h, 01h,0FCh, 31h,0FFh, 00h, 80h, 00h, 00h, 00h db 00h,0C1h, 87h, 80h, 00h, 80h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h db 01h, 06h, 78h, 3Ch, 20h, 60h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h db 01h, 08h, 07h,0C2h,0C0h, 60h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h db 01h, 08h, 00h, 01h,0C0h, 60h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h db 01h, 08h, 00h, 01h,0C0h, 60h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h db 01h, 08h, 18h, 01h,0C0h, 60h, 00h, 00h, 00h,0F1h,0F3h, 87h,0C0h, 00h, 00h, 00h db 00h,0C6h, 18h,0C2h, 20h, 80h, 00h, 00h, 03h, 0Eh, 1Ch, 78h, 70h, 00h, 00h, 00h db 00h,0C1h, 00h,0C2h, 00h, 80h, 00h, 00h, 04h, 44h, 11h, 10h, 38h, 00h, 00h, 00h db 00h, 26h,0E0h, 04h, 01h, 00h, 00h, 00h, 04h, 80h, 12h, 00h, 38h, 00h, 00h, 00h db 00h, 26h,0E0h, 04h, 01h, 00h, 00h, 00h, 04h, 80h, 12h, 00h, 38h, 00h, 00h, 00h db 00h, 11h, 18h, 38h, 03h, 00h, 00h, 00h, 04h, 80h, 12h, 00h, 38h, 00h, 00h, 00h db 00h, 0Eh, 87h,0C2h, 1Ch, 00h, 00h, 00h, 04h, 00h, 10h, 00h, 38h, 00h, 00h, 00h db 00h, 01h,0E0h, 04h,0E0h, 00h, 00h, 00h, 03h, 00h, 1Ch, 00h, 70h, 00h, 00h, 00h db 00h, 1Eh, 18h, 3Fh, 1Eh, 00h, 00h, 00h, 00h, 80h, 32h, 00h,0C0h, 00h, 00h, 00h db 00h, 1Eh, 18h, 3Fh, 1Eh, 00h, 00h, 00h, 00h, 80h, 32h, 00h,0C0h, 00h, 00h, 00h db 00h, 38h, 07h,0C0h, 0Fh, 00h, 00h, 00h, 00h, 40h, 61h, 01h, 80h, 00h, 00h, 00h db 00h,0E9h,0FFh,0FFh, 0Dh, 80h, 00h, 00h, 00h, 31h,0C0h, 87h, 00h, 00h, 00h, 00h db 01h,0E9h, 1Bh,0B9h, 0Dh,0E0h, 00h, 00h, 00h, 0Bh, 80h, 6Eh, 00h, 00h, 00h, 00h db 03h,0C9h,0F0h, 1Fh, 0Ch,0F0h, 00h, 00h, 00h, 06h, 00h, 18h, 00h, 00h, 00h, 00h db 03h,0C9h,0F0h, 1Fh, 0Ch,0F0h, 00h, 00h, 00h, 06h, 00h, 18h, 00h, 00h, 00h, 00h db 07h, 06h,0E0h, 06h, 10h, 78h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h db 07h,0C1h, 00h, 00h, 20h,0F8h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h db 07h,0E0h, 80h, 00h,0C1h,0F8h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h db 07h,0E0h, 80h, 00h,0C1h,0F8h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h db 80h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 01h db0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh end
上传时间： 2013-10-13
上传用户：123啊
本资料是关于单片机电路设计的一些经验，希望对大家有所帮助。。。 前言 MCU发展趋势 未来以及相当长的一段时间内，单片机应用技术的发展趋势为： 1、全盘CMOS化 CMOS 电路具有众多的优点，如极宽的工作电压范围、极佳的本质低功耗及功耗管理特征，形成了嵌入式系统独特的低功耗及功耗管理应用技术。 2、最大化的SoC设计 目前单片机已逐渐向片上系统发展，原有的单片机逐渐发展成通用型SoC 单片机(如C8051F 系列)或SoC 的标准IP 内核(如DW8051_core)，以及各种专用的SoC 单片机。 3、以串行方式为主的外围扩展 目前单片机外围器件普遍提供了串行扩展方式。串行扩展具有简单、灵活、电路系统简单、占用I/O资源少等优点，是一种流行的扩展方式。 4、8位机仍有巨大发展空间 电路常识性概念(1)-输入、输出阻抗 1、输入阻抗 输入阻抗是指一个电路输入端的等效阻抗。在输入端上加上一个电压源U，测量输入端的电流I，则输入阻抗Rin=U/I。你可以把输入端想象成一个电阻的两端，这个电阻的阻值，就是输入阻抗。 输入阻抗跟一个普通的电抗元件没什么两样，它反映了对电流阻碍作用的大小。 对于电压驱动的电路，输入阻抗越大，则对电压源的负载就越轻，因而就越容易驱动，也不会对信号源有影响;而对于电流驱动型的电路，输入阻抗越小，则对电流源的负载就越轻。因此，我们可以这样认为：如果是用电压源来驱动的，则输入阻抗越大越好;如果是用电流源来驱动的，则阻抗越小越好(注：只适合于低频电路，在高频电路中，还要考虑阻抗匹配问题。另外如果要获取最大输出功率时，也要考虑阻抗匹配问题。)
上传时间： 2013-11-08
上传用户：元宵汉堡包
机载控制保护盒必须时刻监测机载发电机交流电压的电压和频率，当电压或频率出现超差时，及时切断向机载设备的供电，保护设备避免事故发生。针对某型直升机控制保护盒采用模拟电路方式进行测量误差大的缺点，以AT89S52单片机为核心，设计了一款数字式机载控制保护盒。该保护盒在实现原控制保护盒所用功能上，增加了声音告警功能，延时时间补偿算法的应用，使得控制盒动作时间可精确到毫秒。实际应用结果表明，该保护盒具有测量准确、可靠性高、成本低、体积小等优点。
上传时间： 2013-11-10
上传用户：aig85
为解决电致变色器件的颜色变化受外界环境颜色控制的问题，设计了一种基于单片机的便携式颜色自适应识别电路。与传统颜色识别电路相比较，该电路利用数字式的颜色传感器来获取外界环境颜色，产生的数字颜色信号易于单片机进行处理。在电路中，下位机部分主要负责获取电致变色器件变色参数及控制电致变色器件的颜色变化;而上位机部分主要负责把下位机获取的电致变色器件变色参数进行电压到颜色的曲线拟合，并通过蓝牙通信把拟合曲线参数传递给下位机。结果表明，该电路能自动根据环境颜色提供-4~4 V范围步进为0.1 V的电压来驱动电致变色器件的颜色显示，与传统的颜色识别电路设计相比，识别的精度和速度都得到了明显改善。 Abstract: In this paper， a portable adaptive circuit for color identification(PACCI) based on MCU was designed. Compared to the traditional color identification circuit， the PACCI adopts digital sensor to detect the color data from external environment and further generate digital color data， which can be processed easily by MCU. In PACCI， the slave is mainly responsible for detecting the color parameters of the corresponding elcreochromic device and further driving it. For the master， which is mainly responsible for the color curve fitting based on the parameters of the electrochromic device， and transmits the fitting parameters to the slave through the bluetooth device. The results show that the PACCI can provide the basis voltage range from -4V to 4V automatically based on the colors of external environment with step as 0.1V to drive the corresponding electrochromic device. Compared to the traditional color recognition circuit， the recognition accuracy and speed of PACCI have been improved significantly.
上传时间： 2013-11-09
上传用户：franktu
现有基于MAX7219芯片的数码管驱动电路只适用于小尺寸LED，为扩展其使用范围，在介绍动态显示芯片MAX7219功能的基础上，提出了一个基于该芯片的8位高亮度8英寸数码管驱动电路。电路保留了MAX7219芯片的功能强大、编程简单等优点，通过74LS273锁存器和ULN2803达林顿驱动器，实现了对任意大尺寸数码管提供较高电压和电流驱动的静态显示，并亮度可调。 Abstract: The existing display-driving circuit based on MAX7219 was only applicable to small-size LED. To expand its use, based on the function introduction of dynamic display chip MAX7219, a display-driving circuit for high-brightness 8-bit LED with the size of 8-inch was proposed. The advantages of MAX7219 were retained, such as powerful function and simple programming. Static display with adjustable brightness for large-size LED with higher voltage and current was achieved with the help of 74LS273 and ULN2803.
上传时间： 2013-10-23
上传用户：31633073
在16MHZ频率下速度为16MIPS的8位RISC结构单片机，内含硬件乘法器。 支持JTAG端口仿真和编程，仿真效果比传统仿真同更真实有效。 8通道10位AD转换器，支持单端和双端差分信号输入，内带增益可编程运算放大器。 16K字节的FLASH存贮器，支持ISP、IAP编程，使系统开发、生产、维护更容易。 多达1K字节的SRAM，32个通用寄存器，三个数据指针，使用C语言编程更容易。 512字节的EEPROM存贮器，可以在系统掉电时保存您的重要数据。 多达20个中断源，每个中断有独立的中断向量入口地址。 2个8位定时/计数器，1个16位定时/计数器，带捕捉、比较功能，有四个通道的PWM。 硬件USART、SPI和基于字节处理的I2C接口。 杰出的电气性能，超强的抗干扰能力。每个IO口可负载40mA的电流，总电流不超过200mA。 可选片内/片外RC振荡、石英/陶瓷晶振、外部时钟，更具备实时时钟（RTC）功能；片内RC振荡可达8MHZ，频率可校调到1%精度；片外晶振振荡幅度可调，以改善EMI性能。 内置模拟量比较器。 可以用熔丝开启、带独立振荡器的看门狗，看门狗溢出时间分8级可调。 内置上电复位电路和可编程低电压检测（BOD）复位电路。 六种睡眠模式，给你更低的功耗和更灵活的选择。 ATMEGA16L工作电压2.7V-5.5V，工作频率0-8MHZ；ATMEGA16工作电压4.5-5.5V，工作频率0-16MHZ。 32个IO口，DIP40、TQFP44封装。 与其它8位单片机相比，有更高的程序安全性，保护您的知识产权。
上传时间： 2013-11-22
上传用户：wcl168881111111
