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18F8680 Datasheet(PDF) 54 Page - Microchip Technology

Part # 18F8680
Description  64/68/80-Pin High-Performance, 64-Kbyte Enhanced Flash Microcontrollers with ECAN Module
PDF  496 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

18F8680 Datasheet(HTML) 54 Page - Microchip Technology

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



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