PIC18F6585 Datasheet, PDF (54/496 Pages) Microchip Technology – 64/68/80-Pin High-Performance, 64-Kbyte Enhanced Flash Microcontrollers with ECAN Module

PIC18F6585/8585/6680/8680
FIGURE 4-1:
INTERNAL PROGRAM
MEMORY MAP AND
STACK FOR
PIC18F6585/8585
PC<20:0>
CALL,RCALL,RETURN
21
RETFIE,RETLW
Stack Level 1
••
•
Stack Level 31
Reset Vector
000000h
High Priority Interrupt Vector 000008h
Low Priority Interrupt Vector 000018h
On-Chip Flash
Program Memory
00BFFFh
00C000h
FIGURE 4-2:
INTERNAL PROGRAM
MEMORY MAP AND
STACK FOR
PIC18F6680/8680
PC<20:0>
CALL,RCALL,RETURN
21
RETFIE,RETLW
Stack Level 1
••
•
Stack Level 31
Reset Vector
000000h
High Priority Interrupt Vector 000008h
Low Priority Interrupt Vector 000018h
On-Chip Flash
Program Memory
Read ‘0’
00FFFFh
010000h
Read ‘0’
1FFFFFh
200000h
1FFFFFh
200000h
TABLE 4-1: MEMORY ACCESS FOR PIC18F8X8X PROGRAM MEMORY MODES
Internal Program Memory
External Program Memory
Operating Mode
Execution
From
Table Read
From
Table Write To
Execution
From
Table Read
From
Table Write To
Microprocessor
Microprocessor w/
Boot Block
Microcontroller
Extended
Microcontroller
No Access
Yes
No Access
Yes
Yes
Yes
Yes
Yes
No Access
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No Access
Yes
No Access
Yes
Yes
Yes
No Access
Yes
DS30491C-page 52
 2004 Microchip Technology Inc.