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PIC16 датащи(PDF) 95 Page - Microchip Technology

номер детали PIC16
подробное описание детали  20-Pin Flash, 8-Bit Microcontrollers with XLP Technology
PDF  418 Pages
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производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC16 датащи(HTML) 95 Page - Microchip Technology

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 2011-2013 Microchip Technology Inc.
DS40001609C-page 95
PIC16(L)F1508/9
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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