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PIC12F1501T-EPQTP Datasheet(PDF) 85 Page - Microchip Technology |
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PIC12F1501T-EPQTP Datasheet(HTML) 85 Page - Microchip Technology |
85 / 278 page 2011 Microchip Technology Inc. Preliminary DS41615A-page 85 PIC12(L)F1501 FIGURE 10-2: FLASH PROGRAM MEMORY READ CYCLE EXECUTION EXAMPLE 10-1: FLASH PROGRAM MEMORY READ Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 BSF PMCON1,RD executed here INSTR(PC + 1) executed here PC PC + 1 PMADRH,PMADRL PC+3 PC + 5 Flash ADDR RD bit PMDATH,PMDATL PC + 3 PC + 4 INSTR (PC + 1) INSTR(PC - 1) executed here INSTR(PC + 3) executed here INSTR(PC + 4) executed here Flash Data PMDATH PMDATL Register INSTR (PC) INSTR (PC + 3) INSTR (PC + 4) instruction ignored Forced NOP INSTR(PC + 2) executed here instruction ignored Forced NOP * This code block will read 1 word of program * memory at the memory address: PROG_ADDR_HI: PROG_ADDR_LO * data will be returned in the variables; * PROG_DATA_HI, PROG_DATA_LO BANKSEL PMADRL ; Select Bank for PMCON registers MOVLW PROG_ADDR_LO ; MOVWF PMADRL ; Store LSB of address MOVLW PROG_ADDR_HI ; MOVWF PMADRH ; Store MSB of address BCF PMCON1,CFGS ; Do not select Configuration Space BSF PMCON1,RD ; Initiate read NOP ; Ignored (Figure 10-2) NOP ; Ignored (Figure 10-2) MOVF PMDATL,W ; Get LSB of word MOVWF PROG_DATA_LO ; Store in user location MOVF PMDATH,W ; Get MSB of word MOVWF PROG_DATA_HI ; Store in user location |
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