PIC12F1840 MICROCHIP [Microchip Technology], PIC12F1840 Datasheet - Page 99

• Manufacturer Part Number: PIC12F1840
• Description: 8-Pin Flash Microcontrollers with nanoWatt XLP Technology
• Manufacturer: MICROCHIP [Microchip Technology]

EXAMPLE 11-2:
FIGURE 11-1:
 2011 Microchip Technology Inc.
Flash ADDR
Flash Data
EEDATH
EEDATL
Register
EERHLT
RD bit
BANKSEL EEADRL
MOVLW
MOVWF
MOVLW
MOVWF
BCF
BCF
BSF
BCF
MOVLW
MOVWF
MOVLW
MOVWF
BSF
BSF
BCF
BTFSC
GOTO
Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4
INSTR(PC - 1)
executed here
DATA_EE_ADDR
EEADRL
DATA_EE_DATA
EEDATL
EECON1, CFGS
EECON1, EEPGD
EECON1, WREN
INTCON, GIE
55h
EECON2
0AAh
EECON2
EECON1, WR
INTCON, GIE
EECON1, WREN
EECON1, WR
$-2
PC
DATA EEPROM WRITE
FLASH PROGRAM MEMORY READ CYCLE EXECUTION
INSTR (PC)
BSF EECON1,RD
executed here
;
;
;Data Memory Address to write
;
;Data Memory Value to write
;Deselect Configuration space
;Point to DATA memory
;Enable writes
;Disable INTs.
;
;Write 55h
;
;Write AAh
;Set WR bit to begin write
;Enable Interrupts
;Disable writes
;Wait for write to complete
;Done
PC + 1
INSTR (PC + 1)
EEADRH,EEADRL
Preliminary
INSTR(PC + 1)
executed here
EEDATH,EEDATL
executed here
Forced NOP
PC + 3
PC+3
INSTR (PC + 3)
PIC12F/LF1840
INSTR(PC + 3)
executed here
PC + 4
INSTR (PC + 4)
DS41441A-page 99
INSTR(PC + 4)
executed here
PC + 5