10 MCS-51 BCDLEDLCD10.1 LED LED(Light Emitting Diode):LED10.1.1 LED LED8787dp10-1

LEDLEDLED88LED10-1

10-1 LED8

03FHC0Hc39HC6H106HF9Hd5EHA1H25BHA4HE79H86H34FHB0HF71H8EH466H99HP73H8CH56DH92HU3EHC1H67DH82HT31HCEH707HF8Hy6EH91H87FH80HH76H89H96FH90HL38HC7HA77FH88H00HFFHb7CH83H

10-110-18LED 03FH 07EHa

NLEDN8N 10.1.2 LED10-24 LED

1. +5V adp8 10-3: 4LED

2. 8I/OI/O

10-448LED8I/O4I/O

10-58LED2003.10.10a)LED b)8

10.2 1. 10-6

2. 10ms3. 10mst1t3

10.2.2 1. 10-7a10-7b

10-88255AI/O

10-9I/O

10-9KEYIN:MOV DPTR,#0BFFFHBFFFHMOVX A,@DPTRANL A,#1FHMOV R3,ALCALL DELAY1010msMOVX A,@DPTRANL A,#1FH CJNE A,R3,RETURN RETURNCJNE A,#1EH,KEY2 KEY2

LJMP PKEY1;K1K1 PKEY1KEY2: CJNE A,#1DH,KEY3 ;S2KEY3LJMP PKEY2 ;S2PKEY2KEY3:CJNE A,#1BH,KEY4;S3KEY4LJMP PKEY3 ;S3PKEY3KEY4: CJNE A,#17H,KEY5 ;S4KEY5LJMP PKEY4 ;S4PKEY4KEY5:CJNE A,#0FH,PASS ;S5RETURNLJMP PKEY5 ;S5PKEY5RETURN:RET ;

2. () 10-10 I/O

1 2a. 10-10b3

12 0 b. 10-11

12 3 10.2.3

CPU 31. 1PA80PC4PC0PC311

2342. 10ms3. 10-13

1 2 310.3 / 10.3.1 I/O/ 10-148031I/O8155H6LED32/8155H8255A

80318155HRAM7E00H7EFFHI/O7F00H7F05H PA6 PBPC 7545274071 8031RAM 679H7EH6 8155HPBPA10-15

DIR MOV R0,79HMOV R3,01HR3MOV A,R3LD0 MOV DPTR,7F01HPAPA.0LEDMOVX @DPTR,AINC DPTR PBMOV A,@R0 AADD A,0DH MOVC A,@APC

DIR1 MOVX @DPTR,A 8155HPBACALL DL1ms 1msINC R0 MOV A,R3 AJB Acc.5,LD1 LEDRL A ; LEDMOV R3,A R3AJMP LD0 ;LD1 RET ;DSEG DB 3FH,06H,5BH,4FH,66H,6DH DB 7DH,07H,7FH,6FH,77H,7CH DB 39H,5EH,79H,71H,73H,3EH

DB 31H,6EH,1CH,23H,40H,03HDB 18H,00HDL1ms MOV R7,02H1msDL MOV R6,0FFHDL6 DJNZ R6,DL6DJNZ R7,DLRET212 34CPU 10-16

KEYIACALL KS1 JNZ LK1 LK1NI ACALL DIR , 6msKEYIAJMP KEYILK1 ACALL DIR 12msACALL DIRACALL KS1 JNZ LK2 LK2ACALL DIR6msAJMP KEYIKEYILK2 MOV R2,0FEHR2MOV R4,00HR4

LK4 MOV DPTR,7F01H 8155HPAMOV A,R2 ;MOVX @DPTR,A ; INC DPTR 2PCINC DPTR ;MOVX A,@DPTR 8155H PCJB Acc.0,LONE 0 LONE1MOV A,00H 0,0AAJMP LKP LKPLONEJB Acc.1,LTW0 1LTW0 2MOV A,08H 1,8AAJMP LKP

LTW0JB A.2,LTHR 2 LTHR3MOV A,10H 2,10HAAJMP LKPLKPLTHRJB Acc.3,NEXT 3NEXTMOV A,18H3,18HALKP ADD A,R4 =PUSH A LK3 ACALL DIR6msACALL KS16msJNZ LK3 POP A ARET

NEXTINC R4 1MOV A,R2 JNB Acc.7,KND KND RL A MOV R2,A R2AJMP LK4 ;KND AJMP KEYI ;KS1 MOV DPTR ,#7F01H0 PAMOV A,00H MOVX @DPTR,A ;INC DPTR DPTR2PC

INC DPTR 1PCMOVX A,@DPTR PCCPL A A0ANL A,0FH 4RET10.3.2 8031/ / 074LS16410-17 74LS164(0)74LS164(7):8LED 8031P3.4P3.5 P3.3TXD

CPU DIR SETB P3.3 P3.3=1TXD MOV R7,08H R7 MOV R0,7FH 7FH78HDL0 MOV A,@R0 AADD A,0DH MOVC A,@APC SEGTAGMOV SBUF ,A SBUF

DL1 JNB TI,DL1TI1CLR TI 1,TIDEC R0 DJNZ R7,DL0R70, ; 0CLR P3.3 8RET SEGTABDB 0C0H,0F9H,0A4H,0B0H,99H 0,1,2,3,4DB 92H,82H,0F8H,90H5,6,7,8,9DB 88H,83H,0C6H,0A1H,86HA,B,C,D,EDB 8FH,0BFH,8CH,0FFH,0FFHF,,P,

KEYIMOV A,00H0AMOV SBUF,A874LS164 00H,0KL0 JNB TI,KL0CLR TITIKL1 JNB P3.4,PK11PK1JB P3.5,KL12KL1PK1 ACALL DL1010msDL10JNB P3.4,PK2

JB P3.5,KL1PK2MOV R7,08H MOV R6,0FEHFEHMOV R3,00H R3MOV A,R6 KL5 MOV SBUF,AKL2 JNB TI,KL2CLR TITIJNB P3.4,PKONE11PKONEJB P3.5,NEXT 22MOV R4,08H208HR4AJMP PK3 ;

PKONEMOV R4,00H 100HR4PK3 MOV SBUF,00H 00H KL3 JNB TI,KL3 ;CLR TI KL4 JNB P3.4,KL4 JNB P3.5,KL4 ;MOV A,R4 ADD A,R3 ARETNEXT MOV A,R6 RL A ;MOV R6,A R6INC R3 1DJNZ R7,KL5 R718

AJMP KEYI 8DL10 MOV R7,0AH10msDL MOV R6,0FFHDL6 DJNZ R6,DL6DJNZ R7,DLRET10.3.3 /8279/ Intel 8279/ 64N

161.8279

2. (1)CPU DB0DB7 CPU8279 CLK8279 RESET8279* 16* CS*

A0=1; =0 RD*WR* IRQRAMIRQCPU2 CPURAMIRQRAMIRQ

SL0SL3 SL0SL34-16161SL0SL3413 RL0RL7 SHIFT CNTL/STB

4 OUTA0OUTA3AOUTB0OUTB3B:LED, SL0SL3 BD*:3. 82791:SL0SL34-16161:8279SL0SL341

2 RL0RL7 10ms8279RAM CNTLSHIFTD5D4D3D2D1D0

D7D6D5D4D3D2D1D0CNTLSHIFT

3RAMRAM8FIFOFIFOFIFOFIFO FIFOIRQ=1CPU4RAMRAM1616RAM4. 8279D7D6D58

RAM5. 8279/ 10-2082798488279RL0RL38279SL0SL274LS1381 SL0SL274LS138(2)OUTB03OUTA 038 BD*74LS138(2)

RAM8279RAM 10-20:8279/7FFFH7FFEH 8279INITI: SETB EX1 ; 1MOV DPTR,#7FFFH ; /DPTRMOV A,#0D1H ; D1HAMOVX @DPTR,A ; /LP: MOVX A,@DPTR ; 8279JB Acc.7,LPMOV A,#00HMOVX @DPTR,A8279RAM80318031

MOV A,2AHMOVX @DPTR,ASETB EAPINT1PUSH PSWPUSH DPHPUSH DPLPUSH AccMOV DPTR,7FFFH RAMMOV A,40HMOVX @DPTR,AMOV DPTR,7FFEH MOVX A,@DPTRCJNE A,37H,PRI1

SETB 20HPRI1POP AccPOP DPLPOP DPHPOP PSWRETIDIR MOV DPTR,7FFFH RAMMOV A,90HMOVX @DPTR,AMOV R0,70HMOV R7,08HRAM MOV DPTR,7FFEHDL0 MOV A,@R0

ADD A,05H05HMOVC A,@A+PC MOVX @DPTR,A RAMINC R01DJNZ R7,DL08RETADSEGDB 3FH,06H,5BH,4FH,66H,6DH DB 7DH,07H,7FH,6FH,77H,7CH DB 39H,5EH,79H,71H,73H,3EH DB 31H,6EH,1CH,23H,40H,03H DB 18H,38H,00H

10.4 MCS-51LCD LCDLiquid Crystal Display 10.4.1 LCD1

2 575103 10.4.2 LCDLCDLCDRAMROM LCDRAMROMLCDPCBLCM(LCd Module)

LCM1.1 57510816202432402 HD44780HD44100HD44100161HD44100162HD44100

10-2 1483310-2

1VSS0V2VDD5V5%3VEE4RS1:05R/W*/1 06E7~14DB0~DB78

10-3 (1) HD4478010-3

RSR/W* 00011011

RSR/W*DB7DB0 11CGRAMRAMDDRAMRAMCGRAMDDRAMCGRAMDDRAM

2 10-23A41HB42H

10.4.3 8031LCD1.8031LCD 10-24LCM8031LCM

1. () 10.5 MCS-51 TPP-40A/16AGP16XLF10.5.1 MCS-51TPP-40A/16A

1. TPP-40A/16A TPP-40ATPP-16ATPP-40A40TPP-16A162. (1)TPP-40A , 2KBCentronics ASCII128 1 667 8240

2 34 02562 Centronics202010-26: DB0DB7, STB* 8

BUSY,, ACK*, ERR*,,30s310-27

STB*0.5sACK*STB*BUSY2. 25600H01H0FH10H1FH20H7FHASCII80HFFHASCII10-28

3. TPP-40A/16AMCS-51 TPP-40A/16A TPP-40A/16ASTB* BUSYACK*,10-29 10-30I/OI/O8255APA8255A PC0BUSYP3.3

MCS-51RAM 3FH~4FHASCII8255A0ACCPRINT:MOV R0,#7FH R0MOV A ,#81H 8255AAMOVX @R0,A MOV R1,#3FHR1MOV R2,#0FH LOOP: MOV A,@R1 AINC R1 MOV R0,#7CH 8255AAR0 MOVX @R0,A 8255AA

MOV R0,#7FH 8255AR0MOV A,#0EH PC7AMOVX @R0,A PC7=0MOV A,#0FH PC7AMOVX @R0,A PC701LOOP1: MOV R0,#7EH CR0 MOVX A,@R0 C ANL A,#01H C7PC0JNZ LOOP1 BUSY,1LOOP1DJNZ R2,LOOP10.5.2 MCS-51GP161. GP16 8031:

:IO0IO7,CPUGP16 CS*RD* WR*BUSYGP16 CPUGP16

1 GP16,: D7-----D4 D3-----D0 n D7------------------ D0NN GP16,7n,n=1038 GP16

D7 D6 D5 D4 1 0 0 0 1 0 0 1 1 0 1 01 0 1 13. MCS-51GP16 GP16, , GP16MCS-5110-32GP168031

BUSY(P3.3)BUSYBUSY I/OI/OP0I/OI/O 10-32GP167FFFHGP168031MOV DPTR,7FFFHMOVX A,@DPTRGP168031MOV DPTR,7FFFHMOV A,DATA/COMMANDMOVX @DPTR,A

10.6 MCS-51BCD10.6.1 BCD BCDBCD10-33BCD

409 BCD5A4BCD A4BCDBCD 10-10BCD

10-10 BCD

A8421010000110001210010310011410100510101610110710111811000911001

10.6.2 BCD1.BCD 10-348031P1.0P1.3BCD

A5V,,8,4, 2,16,4,2,1BCD A,8,4,2,1,BCD2. BCD 10-34N4NI/O,I/O,4I/O, A5V,I/O, ,N,NBCD4+NI/O10-35P14BCD4BCD

4BCD48,4,2,1P1.3,P1.2,P1.1,P1.0P1.6,P1.5,P1.4BCD01 P1.70,P1.4P1.611BCD0,BCDBCD 10-35BCD

9345BCDA 4BCDRAM30H33H,40,4BCD RDSMOV R0,30H ,MOV R2,7FH P144 MOV R3,04H 4BCDLOOP MOV A,R2MOV P1,A P14MOV A,P1 BCDANL A,0FH 4

MOV @R0,A INC R0 MOV A,R2 0RR A MOV R2,A DJNZ R3,LOOP RET