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PIC16F1507-E/SS. 数据表(PDF) 84 Page - Microchip Technology |
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PIC16F1507-E/SS. 数据表(HTML) 84 Page - Microchip Technology |
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84 / 278 page  PIC16(L)F1507 DS40001586D-page 84 2011-2015 Microchip Technology Inc. EXAMPLE 10-2: ERASING ONE ROW OF PROGRAM MEMORY ; This row erase routine assumes the following: ; 1. A valid address within the erase row is loaded in ADDRH:ADDRL ; 2. ADDRH and ADDRL are located in shared data memory 0x70 - 0x7F (common RAM) BCF INTCON,GIE ; Disable ints so required sequences will execute properly BANKSEL PMADRL MOVF ADDRL,W ; Load lower 8 bits of erase address boundary MOVWF PMADRL MOVF ADDRH,W ; Load upper 6 bits of erase address boundary MOVWF PMADRH BCF PMCON1,CFGS ; Not configuration space BSF PMCON1,FREE ; Specify an erase operation BSF PMCON1,WREN ; Enable writes MOVLW 55h ; Start of required sequence to initiate erase MOVWF PMCON2 ; Write 55h MOVLW 0AAh ; MOVWF PMCON2 ; Write AAh BSF PMCON1,WR ; Set WR bit to begin erase NOP ; NOP instructions are forced as processor starts NOP ; row erase of program memory. ; ; The processor stalls until the erase process is complete ; after erase processor continues with 3rd instruction BCF PMCON1,WREN ; Disable writes BSF INTCON,GIE ; Enable interrupts |
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