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?2? ??????PIC16F8XX

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Title: ?2? ??????PIC16F8XX


1
?2? ??????PIC16F8XX
  • PIC????????????????,???????????PIC?????,??????????
    ,??????????????????????????????????,??????????????
    ??????????PIC???????????
  • ???????????PIC??,?????????PIC16F8???????????,?????
    ??????????????????????
  • PIC16F8?????????PIC16F84A?PIC16F873?PIC16F877??

2
2.1 PIC16F84A???
  • 2.1.1 PIC16F84A????
  • PIC16F8X???18???Flash/EEPROM
    8?????????.PIC16F8X??????????,?
    PIC16F83?PIC16F84?PIC16CR83? PIC16CR84,?????????PI
    C16LF8X,PIC16LCR8X??
  • PIC16F84A????PIC16F???????????????18??,??
    ?????????,??????,???????????????????????????PIC???
    ???????,??????????
  • ?????????????????????,????????????????
    ??????????????,??????????????????,????OSC1/CLKIN
    ???????????????????4????OSC2/CLKOUT????,??????????
    ???????????????????????????????,???????????????

3
  • ?PIC16F84A?????????(inv)??,?????L????????
    ???????????????????????,PIC16F84A????,??RA0-RA3
    RA4/T0CK1RB0/INTRB1-RB7??????????RA4/
    TOCK1?????????,?????????,???????????????RB0???????
    ?,?????????????Vss?????VDD????,??????2.0V5.5V,?
    ??????????????PIC16F84A???????????2.1???

?2.1 PIC16F84A?????
4
  • PIC16F84A?????????????????(RISC
    CPU),???????????
  • ???????????,????35??
  • ????????(2??),??1?????
  • ???? DC10 MHZ ????
  • DC400ns ?????
  • 14 ????,8 ? ???
  • ????????15??
  • ??? 8 ??
  • ???4?
  • ??RB0/INT ?? ??????
  • TMR0 ????????
  • PORTBlt74gt ??????????
  • ?? EEPROM ??????
  • Flash ???????,???1000??
  • EEPROM ?????????,???1000?,???? gt 40??
  • ?2.1?PIC16F8X???????????????

5
?2.1?PIC16F8X????????????
PIC16F8X ? ? ????? (WORDS) ????? RAM (BYTE) ?? EEPROM (BYTE) ???? ( MHz )
PIC16F83 512 Flash 36 64 10
PIC16F84 1K Flash 68 64 10
PIC16CR83 512 ROM 36 64 10
PIC16CR84 1K ROM 68 64 10
PIC16F84A??????????,?????? ???????13??? ??????
(LED????I/O),?????? 25mA,?????? 20
mA? ???TMR0?8????/???? ??PIC16F84A??????????????P
OR(Power-on reset)???????PWRT(Power up
Timer)?????????OST????????WDT(Watch Dog Timer) ??
6
2.1.2 PIC16F84A ????
  • PIC16F84A?????????2.2?????????????????????
    ?????????????????????????8????????????????????????
    ?????????????????????????
  • 1.?????(Flash Program Memory)
  • PIC16F84A????????Flash?????????1024??,?1????1
    4????Flash?????????????????????????????????????(Wr
    iter)?????

?2.3 Flash ???
?2.2 PIC16F84A??????
7
  • 1)??(Reset)??????? (??1000h)
  • ????,????????WDT?????????PIC?????,PIC?????????????
    ?
  • 2)????????? (??0004h)
  • ???(Timer)???????????????????????
  • 3)?????? (2007h)
  • ?????????PIC??????????,????????,?????????,????????
    ??????????????????????,??????????,???????(Writer)?
    ?????

?2.4 2007h??????(14 ?)
R ??????? ? P ????
-n ?????? u ???
? 13-4 ???????? CP
1 -??????? 0 -?????????
???????,PIC???????????????? ? 3
Power up ?????? (PWRTE inv) 1
-Power up?????? 0 -Power up?????
?????????72ms?PIC Reset? ???????
? 2 WDT????????? (WDTE)
1 -WDT????? 0
-WDT?????? ? 1-0 ???????
8
  • 2.?????RAM (Random Access Memory)
  • RAM????????????????????(?????????????)???
    ???????RAM??????????????,???????????,???????,?????
    ????????????????????????????2.4???????????????????
    ??????(Bank)????????????????12 ?(??
    00h-0Bh)????????????SFR?????PIC?????,I/O??????????
    ???????????13???68?(?? 0Ch-4Fh)?????????GPR
    (General Purpose Registers)???????????????????????
    ?????????

?2.5 RAM ?????
9
  • 3.????????EEPROM (Electrically Erasable
    Programmable Read Only Memory)
  • ?RAM??,EEPROM????????,???????????EEPROM???
    ?????????????????64???????100????????????????????,
    ????????,???????????100???????,???????????????????
    ??????40??
  • 4.???????SFR (Special Function Registers)
  • ????????????,SFR???????16???????????2.3?????
    ?????????????160??,???????????????????????????????
    ??????????,???????????????????????

10
  • 5.?????(Program Counter)
  • ????????????????????????????13?????
    ??????????????1?????????????????????,?????????????
    ???
  • 6.?????
  • ??????????????????????????????????????????
    ???????,??????????????????,???????????????????
    ?????????RETURN????????????????????????????????
    ??????CALL????????,???????????,???????????????????
    ?????????(PUSH)????????RETURN???,?????????????????
    ???,?????????(POP)???????,???????????,???????????,
    ??????????????????? ?????????????,??????RETURN????
    ????????2.6,???????????,????????
  • 7.?????(Instruction Register)
  • ?????????????(Instruction)?????????,???????
    ?FECTCH?
  • 8.????
  • ??????????????(??)???????????????????????
    ??

11
?2.6 ???????????
12
  • 9.???????????(Multiplexer and Arithmetic Logic
    Unit)
  • ?????????????PIC????????????????????????????
    ??????????????????????????CPU????????,????????????
    ?
  • 10.?????
  • ????????W Register???????????????????????????
    ?????????????????????????????????I/O????
  • 11.?????(Status Register)
  • ?????????????????????????????(??????,????????
    ?),??????? ??????????????
  • 12.???????FSR (File Select Register)
  • ?????,?????????????????FSR???????RAM?????????
    ????????????????????????????????????????,?????7?,?
    ?????0?127??????????????????????????,????????RP0
    ?????FSR????8????,????????????????????????????????
    ????????? ????????PIC16F84A?????80(50h)?127(7Fh)??
    ?????

13
  • 13.???????(Address Multiplexer)
  • ?RAM?????????,???????????????(7?)???????RP0?
    ????????????????????????(7 ?)?FSR?????????????????
    ?????????????????
  • 14.EEDATA ???
  • EEDATA??????EEPROM????????????????????
  • 15.EEADR ???
  • EEADR????EEPROM???????????8????,????0?255?
    ?????PIC16F84A??????64?,??6 ???????EEPROM???
  • 16.???(Timer)
  • PIC16F84A???????8?????????TMR0?8??????????25
    6?????256???,?????????????SFR?INTCON????TOIF ??
    1????????????????????????????,SFR?INTCOM????GIF??T
    OIE?????1?

14
  • 17.I/O ?????
  • PIC16F84A????????13??????????????????????
    ??????,??????????13 ????5???8?????5?????A?,8
    ?????B??????????,??????????,?13 ??????????????
  • 18.????????
  • ????????PIC????????,PIC???????????????????
    ???????????????????????????????????????????,??????
    ?????,???????????????????????PIC????????????????
  • PIC16F84A??????????,????????(1??)?4???????
    ??????????????8??(2??)??20MHz?????,?????1/20MHz,50
    ns,????????200ns?PIC?1?????500?????

15
  • 2.1.3 PIC16F84A ???
  • PIC16F84A???,?????????????????????????????
    ?
  • ?????(Power-on )
  • ???,???PIC?????????????????????????PIC????
  • ?????(Oscillator Start-up Timer)???,?????????????
    ???????????????PIC????
  • ????(Power-on Reset)???,PIC??????????
  • ???(Watchdog)??????????????PIC???????????PIC?????
    ?????????????PIC??????????????,PIC????????????????
    ????????????,PIC??????????

16
2.2 PIC16F873???
  • 2.2.1 PIC16F873????
  • ???????PIC??????,???????PIC16F84A,????????
    ???????,??????,?????????????????PIC16F873?????????
    ?????PIC16F873???PIC16F84A???????????????????????
  • PIC16F873????PIC16F84A?????????????????????
    ???????4 K ??,?????RAM ???192??,EEPROM?128????????
    ????????????????????????(A/D)????????????????PIC16
    F84A?????????,????????PIC16F84A???????????????
  • ?2.7?PIC16F873?????,?????????????
  • RA0-5 ????? A MCKLR Master
    Clear (?????)
  • RB0-7 ????? B Vpp ??????
  • RC0-7 ????? C THV Test
    Mode ??????
  • AN0-4 ???? VREF/- ????
    (A/D??)
  • RX USART?????? SS Sleep
    ??

17
  • TX USART?????? T0CK1 ?????0????
  • SCK ??????? T1OSO ?????1??????
  • SCL SPI,I2Cmode?? T1OSI
    ?????1??????
  • DT ???? T1CK1
    ?????1????
  • CK ???? PGD ??????
  • SDO SPI???? PGC ??????
  • SDI SPI ???? PGM ???????
  • SDA ??????(I2Cmode) INT ??????
  • OSC1/CLKIN ???? VDD ??
  • OSC2/CLKOUT ???? Vss ??
    (Ground)
  • CCP1,2 Capture?? / ???? / PWM??

18
  • 1.PIC16F873????????SFR (Special Function
    Register)
  • PIC16F873?RAM???????4 ???(Bank)?????????128????
    ?????SFR???????????32????33 ??????????????????????
    ?????96???2??3?????0??1?????????,????????????2
    ??????192 ???
  • 2.PIC16F873???(Configuration)?
  • PIC16F837?????????????????????????2007h??
    ????????????????????????????????????
  • ???????PIC???????2.9?????????????

?2.9 ??????????
19
  • 2.2.2 PIC16F873??????
  • PIC16F837????????A?B?C????A??6?,B??8?,C??
    8?????????22??????????????,A?B?C???????PIC16F873??
    A,B,C?????????????????????,???????,??A/D????????,?
    ?????????????????PIC16F873??????????

20
  • 1.????A?
  • ????A??RA0-RA5?6??????????????????????,??????,
    ?????????????????0???????????????PIC16F84A,???????
    ???????????
  • ????????????,??????(Mode)????TRISA????????????
    ????????????,????ADCON0?ADCON1??????????????????,T
    RISA???????????????????????,????TRISA?????????????
    (1)?????A????????2.10???

?2.10 ????A????
21
  • 2.????B?
  • ????B??RB0-RB7?8?????????????????????????????
    ???????????????????,???????????????
    (ICSP)???,B???????????PIC16F873?ICSP?PIC16F84A????
    ??
  • RB4-RB7?4?????????????????????,B??????TR
    ISA???4????,?4???,4?????????????????????????INTCOM
    ????RBIF???,?????????????0004h,?????????
  • ??,RB0/INT????????????????????,INTCON????IN
    TE ????1?????????????????,?OPTION????RBPU???????1?
    ,?????,0????????

?2.11 ????B????
22
  • 3.????C?
  • ????C??B????8??????????C???????????????,?
    ????????1??????,??????????????????
  • RC0??????????1???????????????????????????
    ???T1CON???????RC1???????????1????????????CCP2
    (Capture2 input/Compare2 output/Pulse Width
    Modulation2 (PWM2) output)?????????1??????T1CON???
    ??????CCP2???????CCP2CON???????

?2.12 ????C????
23
  • 2.2.3 PIC16F873?????
  • PIC16F837??3???????????????????????,???????
  • ?????0
  • PIC16F873??????0?PIC16F84A??????0??????
    ,???????????
  • ?????0?8??????,??????255?
  • ?????????????
  • ???8?????Pre-scale???
  • ???????????
  • ?????????(?????????FFh??00h)
  • ????????,?????????????

24
  • ?????1
  • ?????1??2.13??,???16??????
    (TMR1H,TMR1L)????2?8????????????????Pre-scale,????
    1,2, 4,8?????TMR1IE???PIE ??1?,??????????????????F
    FFFh??0000h??TMR1IF????,???????
  • ?????1?????????????????????T1CON???
    TMR1CS????TMR1CS??0?,??????1??????????????????????
    ??????????????

?2.13 ?????1????
25
  • ?????2
  • ??????????8 ?????? (TMR2)
    ??????????????? ??????4????????????4????????????
    ?????1,4,16?????????????1?16??16?????????
  • ????????????2.14????????????????????????,
    ???????00h????? ?????????????2??0?????????????????
    ??????????????FFh?????????????????????????????????
    ?,???????????????????5,??????????????5??,?????????
    ??(PIR1)TMR2IF??1?????? ?????2????T2CON???TMR2ON??
    ??????????

?2.14 ?????2????
26
  • 2.2.4 PIC16F873 CCP??
  • CCP???PIC16F873??????CCP?????Capture,Comp
    are?PWM (Pulse Width Modulation)
    ?????????,?????????????????????PIC16F873???CCP???

CCP1 CCP2 ????
???? ???? ???????1 ???????????????,??????
???? ???? ??????,????????1?? ?????,?????CCP1?????
???? PWM ??????1??????2????,?????????????
???? ???? ??????,????????1?? ?????,?????CCP2?????
???? ???? ????????,????????1?? ??,??????????
???? PWM ??????1??????2????,?????????????
PWM ???? ??????1??????2????,?????????????
PWM ???? ??????1??????2????,?????????????
PWM PWM ??????,?????2????????????
?2.3 CCP1?CCP2???????
27
  • ?????? CCP??????
  • 1.????(Capture)??
  • ????????,RC2/CCP1 ??(13??)?????????????????CCPR1
    (CCPR1L?CCPR1H) ??????TRISC???????RC2/CCP1
    ????????? ????????2.15?
  • ??RC2/CCP1 ?? (?? 13) ??????????????????CCP1CON???
    ?CCP1M 0 ??CCP1M 3 ??4?????

?2.15 CCP???????
28
  • 2.????(Compare)??
  • ????????CCPR1????????????1(TMR1)????????????
    ?????????2.16??? ????????,??CCP1????CCP1M0
    ??CCP1M3 ???????????????? ??????????2.5?
    ???,???TRISC?????RC2/CCP1?(?? 13)??????
    ???????1????????????? ????????????,???????????

?2.16 CCP???????
29
  • PWM??
  • ????PWM (Pulse Width Modulation)
    ???,??CCP1?? (?? 13) ????????? ????????????2.17???
    ???PWM??,?CCP1CON????CCP1M3 ??CCP1M2 ??1????

?2.17 PWM???????????
30
  • ??????PWM?????Duty???????
  • 1) PWM??
  • Pulse?????TRM2?PR2?????????,?????????
  • PWM???? (PR2?? 1)4??????????2?????
  • ???1 (10MHz??????)
  • ?? PR2 255
  • ????? 0.1 µs (10MHz??)
  • ?????2?Prescaler? 16
  • PWM?? (2551)40.11E-0616
  • 1.6384 ms(610Hz)
  • 2) PWM????????
  • ??????????Pulse???????,?????????
  • ???3 (10MHz???Duty??)
  • ?? CCPR1L CCP1X CCP1Y 1023
  • ????? 0.1 µs (10MHz??)
  • ?????2?Prescaler? 16
  • PWM ??????? 10230.11E-0616
  • 1.6368 ms

31
  • ??????,PWM?????????
  • ?PR2?????PWM???
  • ?CCPR1L????CCP1CON?????PWM Duty??
  • ?TRISC?????CCP1 (?? 13) ??????
  • ?T2CON????????????Prescaler??
  • ?CCP1CON???CCP1M3??CCP1M2???PWM?? (11XX)?

32
  • 2.2.5 PIC16F873 ????(A/D)??
  • ????????????????????,???????????????
    PIC16F873??10?????????,??????????1/1024??????
    ???????0 V?5 V???????5V,??????5/1024
    V,?0.004883 V (?5 mV)?
  • 1.??????
  • ??PIC16F873????????5?????????
    (AN0-AN4),????????????????PIC16F873???1???????????
    ????????????,???????????????????1???????40us,?????
    ???????????????????????????????
  • ??????????????ADCON1???PCFG0??PCFG3??4
    ????? PIC??????????????ADCON0????CHS0?,CHS1??CHS2?
    ?????? ?????????TRISA???????1????????????????2.18?
    ??

33
  • 2??????????
  • ?????????Vss (0V) ?VDD (5V)
    ??,?????VREF- (????) ?VREF (????)
    ?????????????,VREF-?VREF ??????Vss?VDD???
    ??,??????Vss,??????3V?,?????3V?????????????1/1024,
    ?3/10240.002929 (?3mV)?
  • VREF-?VREF???,???ADCON1???PCFG0??PCFG
    3??????? ??VREF-?VREF????,??????AN2???AN3????????
    ?????VREF,VREF-?????Vss????????,?????Vss,?????VD
    D?

?2.19 ???????????
34
  • 3????????
  • ?????????ADRESH?ADRESL?????????????2.20?????????8?
    ????????16???????ADRESH???,ADRESL??????????10?????
    ??16 ????????10???10??,??ADCON1????ADFM?????????2.
    20??,ADFM?0,??10?,1???10??

?2.20 ????????
35
  • ????????
  • ??2.21?,???????ON?,????????ANx???????
    ?????????CHOLD??,??????????????????????????
    ?????????????,??ADCON0???CHS0,CHS1?CHS2???????,???
    ??????????,????????????????????????,??????????????
    ?????????????? ??????20 us? ??????????????
    ????????????????,????20 us? ???,???????????????,??
    ?????????????????????

?2.21 ?????????????
36
  • 5?????????
  • ?????????????????????1???1.6us
    (TAD)??????????ADCON0????ADCS0??ADCS1???????2?????
    ?4??????
  • ????1.6 us???????,??????????PIC????,???
    ?????1.6 us???????,RS??????SLEEP?????????

?2.22 ????
37
  • 6.??????????
  • ??????????????????????????????
  • SLEEP????????
  • ???PIC??????????????????,????SLEEP????????????????
    ?????RC???,?????ADCON0???ADCS0??ADCS1??1?1
    ??????4 us?ADCON0???GO??1?SLEEP?????PIC??SLEEP???S
    LEEP??????????????,?????????????????????2.23???

?2.23 SLEEP??????????
38
  • 2.2.6 PIC16F873 ??????USART
  • PIC16F873????????????????,?????/?????USART
    (Addressable Universal Synchronous Asynchronous
    Receiver Transmitter)???????????MSSP(Master
    Synchronous Serial Port)???USART?????????????????
    (?????)?????-?Master (?????)?????-? Slave
    (?????)?
  • USART?????????????????????????8??????????
    ??,?????????,????????9????

39
  • 1.????
  • ?????,??????????1?0?????????,?????????????????????
    ????????? (8 ? ?9??) ??????????,??????????????????
    ??????????,???????????????????,????????H????????H?
    ???L??? (START) ?,?????????????,??,???????????????
    ??????????STOP ? (H??) ???????????USART???,???????
    ??????????????????,??????????????????????????,????
    ?????Tx?????Rx?????,????????? (?????)?

40
  • 2?????????
  • ??????RC6/TX/CK (17 ??)
    ???????,RC7/RX/DT (18 ??)???????????????USART????,
    TX ?RX?????????TRISC?????,?C???6 ????0
    (????),?7????1(????)???RC6?RC7??USART???,?????????
    ?(??????????)SPEN ????,??TXSRA???SYNC
    ??USART??????2.24???

?2.24 USART ????
41
  • 3 USART??????
  • USART???????????BRG (Baud Rate
    Generator)????????????????BRG???????????????SPBRG,
    ???8???????????????USART???,??????????(TXSTA)?BRGH
    ????????????

42
  • 4.USART????????
  • USART?????,??????????SPEB??RC6????TX????TXREG?????
    ?????,??????TSR (Transmit Shift Register)
    ?????TX???????????????????(TXSTA)?TXEN
    ??1?????????????????????

?2.25 USART???????????
43
?2.26 ???USART???????
?2.27 ?????USART???????
44
  • 5.USART????????
  • ?2.28???USART??????????????USART?????,??
    ??????????????SPEN ??1???RC7?USART?????RX?????,?RX
    ?????????????????RSR????????????????,??????????3??
    ???????SPBRG??????????????(TXSTA)?BRGH
    ??????????RSR??????????RSR??????????STOP
    ??,??RSR?????????RCREG?????????RCREG????,PIR1?????
    ???RCIF ??1??????????????,??????????????(PIE1)?RCI
    E ??1???
  • ??2.28??,RCREG?????2?????FIFO
    ???????,?????2???????????????????????????????????,
    RCIF ??????,?RCREG??????????,??????0?

?2.28 USART??????????
45
  • ??????RSR??????,?RCREG?2?????FIFO (First
    In First Out) ???????????RCSTA????OERR
    ??????????Overlay?????????????RSR????????????????U
    SART???????????????,???RCSTA????CREN
    ???,????CREN????OERR??????
  • ??????????USART??????????????????????????
    ??????????????RSR??????????,RCSTA????FERR
    ???????????RERR ????RCSTA????RX9D
    ????????????1??????????????,?RCREG???????????RCSTA
    ?????????FERR ??????

46
2.3 PIC16F877???
  • ????PIC?????????Microchip??????????,???
    ??????????????,????????????PIC16F877???????????,??
    Flash?????,????????????????CPU?????????????,??????
    ???????????PIC16F877??????????????PIC?????????????
    ?????????????????????????????????????

47
  • 2.3.1 PIC16F877??
  • PIC16F877??PIC16F87X??????????,??????
  • ???RISC CPU
  • 35?????
  • ????????2????,????????
  • ????DC20MHZ????,DC 200ns????
  • 8K14?FLASH?????
  • ????(??14????)
  • 8????????
  • ?????????????
  • ????(POR)??????????????
  • ????????
  • ?????
  • ??????(ICSP)

48
  • ?????
  • Timer0???????8????/???
  • Timer1???????16????????,????????,?Sleep??????
  • Timer2??8??????,??????????8????/???
  • 10????A/D???
  • ??SPI(???)?I2C(?/?)???SSP
  • ??9??????????????/???(USART/SCI)
  • ??RD,WR?CS??(?40/44??)8????????
  • ?????????????

49
  • PIC16F877?? Flash program
    ??????,????????,???? ICD(In Circuit
    Debug)??,??????????????????,??????????????????????
    ?,PIC16F877????PLCC(Plastic Leaded Chip Carrier)?
    QFP(Quad Flat Package)???????,???????,??????????
  • PIC16F877(??2.30) ?????(Flash)???,??????,?
    ROM ?????? 8K ??,? 2K ???,??? 4??? RAM ??? 512
    ???(00f1FFh),? 128 ?????????,???? 4 ????,?????
    ???????????,???????????,?? I/O?CCP?Timer?USART?MSS
    P ??

50
  • 2.3.2 ??????
  • PIC16F877 ????????????,?? CPU?POM?RAM?I/O
    ??????,?????????,????
  • A/D converter???????,?????? 8 ????????
    CCP??????????PWM,?????????
  • Timer,?????,? Timer0?Timer1?Timer2 ?3??
  • USARTUniversal Synchronous Asynchronous Receiver
    Transmitter,??/??????,? RS232?RS485 ??
  • MSSPMaster Synchronous Serial Port,???(I2C)????(S
    PI)????
  • ??????,??? EEPROM ??????????,??????????????,??????
    ??

51
?2.30 PIC16F877 ????
?2.31 PIC16F877 RAM???
52
  • 2.3.3 PIC16F877 ????
  • 1.PIC ????
  • ??????????????????????,????/???????????,??
    ??????,??????????????,????????,PIC16F877
    ????????20MHz????????13(OSC1/CLKIN)???14(OSC2/CLK
    OUT),????????4???
  • LP?????????(Low Power Crystal)
  • XT?????/???(Crystal/Resonator)
  • HS???????(High Speed Crystal/Resonator)
  • RC????/??(Resister/Capacitor)

?2.32 ??????
53
  • 2.?????????
  • PIC16F877 ?????? 5V,?? ??11 ? ??32,??12 ?
    ??31 ?????,?????? ??1,?? Reset
    ?,??????????,???????????2.33?
  • 3.?????
  • PIC16F877 ???????????? 7 ????,??? 33
    ??????????????,??????????????,????????????????????
    ??PIC ? 8?????,???????,?????? 8 ???,?? I/O ???
    PORTA(RA0RA5)?PORTB(RB0RB7)?PORTC(RC0RC7)?PORTD
    (RD0RD7)? PORTE(RE0RE2)?,?????????

54
  • PORTA
  • PIC16F877?PORTA ???6?(RA0RA5),PORTA
    ??????????????,??????,PORTA ??????????,??????????
  • PORTB
  • PORTB ???8?(RB0RB7),?????????????????,??,??????,?
    ??????,??? ??36(RB3/PGM)???39(RB6/PGC)?
    ??40(RB7/PGD)?
  • PORTC
  • PORTC ???8?(RC0RC7),??????? I/O
    ?,?????????????????,?? CCP(??????)?I2C?SPI(???????
    ?)?UART(????????)??
  • PORTD
  • PORTD ???8?(RD0RD7),?????? I/O?,?? PSP(Parallel
    Slave Port)????????????????????,??????????????????
    ?
  • PORTE
  • PORTE ???3?(RE0RE2),PORTE ? ??8?9?10 ?????,????
    I/O ??,????????,??? PORTD ???????????????,?/RD?/WR
    ?/CS ?,????PORTE ???

55
?2.33 ???????
?2.11 ???????
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