6.2 6116Ϊ2KB8λRAM,11ַA0~A10,ͼ6.2
ͼ6.2
6.3 2732Ϊ4KB8λEPROM,6264Ϊ8KB8λRAM,ֻһƬ,ԸƬѡCEӵ,·ͼ6.3
ͼ6.3
6.4 6116Ϊ2KB8λRAM2716Ϊ2KB8λEPROM,ַ߾Ϊ11λ,ַ߽߲μͼ
6.3
6.5 ·ͼ6.5
ͼ6.5
4Ƭ2764CEֱ138Ϊy0y1y2y3,ƬַΪ: 2764(4) 0000H~1FFFH 2764(3) 2000H~3FFFH 2764(2) 4000H~5FFFH 2764(1) 6000H~7FFFH 6.6 Ƶ·ͼ6.6
ͼ6.6
7¡Ƭϵͳչ
7.1 ͼ6.6е2764ȥġP2.5ΪP2.4ġP2.6ΪP2.7ɲο̲
7.1
7.2 ο4.16244
λһ+5Vһťӵء 7.3 ·ͼͼ7.3
MOV DPTR,#0CFFBH MOV A, #0A2H MOVX DPTR, A
7.4 ·ƣϼ
ԡ
7.5 8255AڡBڡCڡƿڵ
ֱַΪ7CFFH7DFFH
7EFFH7FFFH,Aڷʽ0,C,80H·ͼ7.5 ͼ7.3
ͼ7.5
ORG 0000H MOV DPTR,#7FFH ;ָƿ MOV A,#80H ; ABھûʽ MOVX @DPTR,A ; д MOV DPTR,#7CFFH MOV A,#0 MOVX @DPTR,A ;ʾ AGAIN: MOV R0,#0 ;R0αƫ MOV R1,#01 ;R1λѡ NEXT: MOV DPTR,#7EFFH ;ָC MOV A,R1 MOVX @DPTR, A ;Cλѡ MOV A, R0 MOV DPTR,#TAB ; αͷַ MOVC A, @A+DPTR ; MOV DPTR,#7CFFH ;ָB MOVX @DPTR, A ; B ACALL DAY ;ʱ INC R0 ; ָһλ MOV A,R1 RL A ;ָһλ MOV R1,A CJNE R1,#10H,NEXT ;ʾꣿ SJMP AGAIN DAY: MOV R6,#50 ;ʱӳ DL2: MOV R7, #7DH DL1: NOP NOP DJNZ R7,DL1 DJNZ R6,DL2 RET TAB1: DB 6FH,3FH,3FH ,5EH ;g00d(9ood)
7.6 ʾ:EPROM27128O 16KB8,ַΪ14,6264Ϊ8KB8λ,ַΪ13,·ɲο
ͼ7.3 7.7 ݵ·
I/O :A:FDF8H,B:FDF9H,C:FDFAH, /״̬:FDFBH.
ʱ TIMEL:FDFCH TIMEH:FDFDH RAM :FC00HFCFFH
8¡ƬΧӿڼ
8.1·ս̲ͼ8.7,ͬǽP27ΪP23,ȼģӦ: 3CӦ:5V/3V=255/X C=153=99H
ͬ1V2V4VӦֱΪ33H66HCCH Dz
MOV DPTR,#OF7FFH
NEXT1: MOV A,#0
NEXT: MOVX DPTR,A
NOP NOP INC A
CJNE A,#9AH,NEXT
NEXTA:DEC A
MOVX @DPTR,A NOP NOP
CJNE A,#0,NEXTA SJMP NEXT1 END
4VӦΪCCH
MOV DPTR, #0F7FFH MOV A,#0
NEXT: MOVX DPTR,A
ACALL D2MS XRL A,#0CCH SJMP NEXT
ݲ
MOV DPTR, #0F7FFH
NEC: MOV A,#0
NEXT: MOVX DPTR,A
ACALL D1MS ADD A,#33H
CJNE A,#0FFH, NEXTA
NEXTA:MOVX @DPTR,A
ACALL D5MS SJMP NEC
8.2 ·ο̲ͼ8.8,һַ,ʹָһ,ͬϡ 8.3 ·ο̲ͼ8.7,ַΪ7FFFH
ORG 0000H
MOV DPTR,#7FFFH MOV R0,#20H MOV A, R0
NEXT: MOV X DPTR,A
ACALL D1MS INC R0
CJNE R0,#30H,NEXT SJMP $ END
8.4·Ľ̲ͼ8.11,ͬǽP25~P27ΪP20~P22
8.5·Ľ̲ͼ8.2,ͬ ʱʽ:EOC;ѯʽ:EOCŽӵƬP1.0˿;
жϷʽͬԭͼ
ѯIN2ĵַΪ7FFAH,EOCŽӵƬP1.0˿, ѯP1.0Ϊ,ת
ORG 0000H
MOV R7,#0AH MOV R0,#50H
MOV DPTR,#7FFAH
NEXT: MOVX DPTR,A ;ת
JB P1.0,$ ;ѯȴ MOVX A,DPTR ; MOV R0,A INC R0
DJNZ NEXT SJMP $
8.6 ADC0809ɼģź,˳ɼһ,ɼadСADC0809ģͨ
0~7ĵַΪ7FF8H~7FFFH,ADC0809תEOCǺⲿж1,·ο̲ͼ8.2ο̲ĵ167ҳӣֻݴ洢ַ
8.7 ·ο̲ͼ8.26Ӽ̵ߺܸ8ټߵ2ԡ
9¡нӿڼ
9.1-9.3 ο̲
9.4 ·ս̲ͼ9.12һƬ24C04A1ӵVCCһƬȫһ 9.5
9.6 ԣڲIICʱSPIϵĴӻѡøߣ㲻SPI
Ӱ죻ڲSPIʱIICߵSDAָߵƽIICߵòʼźţ㲻IICӰ졣
9.7 TLC5615SPI߽Ƭս̲ͼ9.26REFINΪ˥룬OUTΪ˥
Vo?2?VREFIN?CODECODECODE,Ϊ 2??210210299.8 ʾýϿٶȶԱѹвʱ㶨ΪtһʱΣTڵ
õIJֵvƽʱ֣ʵΪͣԸʱεijȣƽDZѹڸʱڽƵЧֵ
2v?ii?1kVЧֵ?kk=T/t
Ӧƪ
10¡ƬCԱ̡C51
10.1 6Уȱ١;8С;ࣻmainȱ١}
10.2 xdataĵַΧΪ0x00000xFFFF64KҪֽڼ¼log265536?16 10.3
char bdata a; float xdata b;
int xdata * cעⲻҪΪxdata int * cint * xdata c,cΪ
xdataָĬintݵָ룬ⲻ;
10.4 main()