 |
Zakładka z wyszukiwarką danych komponentów |
|
|
Zakładka z wyszukiwarką danych komponentów |
|
PIC12F615 Arkusz danych(PDF) 34 Page - Microchip Technology |
|
|
|||||||||||||||||||||||||||||
PIC12F615 Arkusz danych(HTML) 34 Page - Microchip Technology |
|
|
34 / 212 page  PIC12F609/615/617/12HV609/615 DS41302D-page 34 2010 Microchip Technology Inc. An example of the complete four-word write sequence is shown in Example 3-2. The initial address is loaded into the PMADRH and PMADRL register pair; the eight words of data are loaded using indirect addressing. EXAMPLE 3-2: WRITING TO FLASH PROGRAM MEMORY ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ; This write routine assumes the following: ; A valid starting address (the least significant bits = '00') ; is loaded in ADDRH:ADDRL ; ADDRH, ADDRL and DATADDR are all located in data memory ; BANKSEL PMADRH MOVF ADDRH,W ; Load initial address MOVWF PMADRH ; MOVF ADDRL,W ; MOVWF PMADRL ; MOVF DATAADDR,W ; Load initial data address MOVWF FSR ; LOOP MOVF INDF,W ; Load first data byte into lower MOVWF PMDATL ; INCF FSR,F ; Next byte MOVF INDF,W ; Load second data byte into upper MOVWF PMDATH ; INCF FSR,F ; BANKSEL PMCON1 BSF PMCON1,WREN ; Enable writes BCF INTCON,GIE ; Disable interrupts (if using) BTFSC INTCON,GIE ; See AN576 GOTO $-2 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ; Required Sequence MOVLW 55h ; Start of required write sequence: MOVWF PMCON2 ; Write 55h MOVLW 0AAh ; MOVWF PMCON2 ; Write 0AAh BSF PMCON1,WR ; Set WR bit to begin write NOP ; Required to transfer data to the buffer NOP ; registers ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; BCF PMCON1,WREN ; Disable writes BSF INTCON,GIE ; Enable interrupts (comment out if not using interrupts) BANKSEL PMADRL MOVF PMADRL, W INCF PMADRL,F ; Increment address ANDLW 0x03 ; Indicates when sixteen words have been programmed SUBLW 0x03 ; 0x0F = 16 words ; 0x0B = 12 words ; 0x07 = 8 words ; 0x03 = 4 words BTFSS STATUS,Z ; Exit on a match, GOTO LOOP ; Continue if more data needs to be written |
|
Link URL |
| Czy Alldatasheet okazała się pomocna? [ DONATE ] |
O Alldatasheet | Reklama | Kontakt | Polityka prywatności | Link do karty katalogowej | Linki | Lista producentów All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
Polish ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
