Datasheet

 2003-2013 Microchip Technology Inc. DS30491D-page 53
PIC18F6585/8585/6680/8680
REGISTER 4-1: CONFIG3L CONFIGURATION BYTE
FIGURE 4-3: MEMORY MAPS FOR PIC18F8X8X PROGRAM MEMORY MODES
R/P-1 U-0 U-0 U-0 U-0 U-0 R/P-1 R/P-1
WAIT
— — — — —PM1PM0
bit 7 bit 0
bit 7 WAIT: External Bus Data Wait Enable bit
1 = Wait selections unavailable, device will not wait
0 = Wait programmed by WAIT1 and WAIT0 bits of MEMCOM register (MEMCOM<5:4>)
bit 6-2 Unimplemented: Read as ‘0’
bit 1-0 PM1:PM0: Processor Data Memory Mode Select bits
11 = Microcontroller mode
10 = Microprocessor mode
01 = Microcontroller with Boot Block mode
00 = Extended Microcontroller mode
Legend:
R = Readable bit P = Programmable bit U = Unimplemented bit, read as ‘0’
- n = Value after erase ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown
Microprocessor
Mode
000000h
1FFFFFh
External
Program
Memory
External
Program
Memory
1FFFFFh
000000h
On-Chip
Program
Memory
Extended
Microcontroller
Mode
Microcontroller
Mode
000000h
External
On-Chip
Program Space Execution
On-Chip
Program
Memory
1FFFFFh
Reads
000800h
1FFFFFh
0007FFh
Microprocessor
with Boot Block
Mode
000000h
On-Chip
Program
Memory
External
Program
Memory
Memory Flash
On-Chip
Program
Memory
(No
access)
‘0’s
010000h
(2)
00FFFFh
(2)
External
On-Chip
Memory Flash
On-Chip
Flash
External
On-Chip
Memory Flash
00BFFFh
(1)
00C000h
(1)
00FFFFh
(2)
00BFFFh
(1)
010000h
(2)
00C000h
(1)
Note 1: PIC18F6585 and PIC18F8585.
2: PIC18F6680 and PIC18F8680.
18F8680.book Page 53 Tuesday, January 29, 2013 1:32 PM