Datasheet

PIC17C7XX
DS30289C-page 44  1998-2013 Microchip Technology Inc.
TABLE 7-1: MODE MEMORY ACCESS
The PIC17C7XX can operate in modes where the pro-
gram memory is off-chip. They are the Microprocessor
and Extended Microcontroller modes. The Micropro-
cessor mode is the default for an unprogrammed
device.
Regardless of the processor mode, data memory is
always on-chip.
FIGURE 7-2: MEMORY MAP IN DIFFERENT MODES
Operating
Mode
Internal
Program
Memory
Configuration Bits,
Test Memory,
Boot ROM
Microprocessor No Access No Access
Microcontroller Access Access
Extended
Microcontroller
Access No Access
Protected
Microcontroller
Access Access
Microprocessor
Mode
0000h
FFFFh
External
Program
Memory
External
Program
Memory
2000h
FFFFh
0000h
01FFFh
On-chip
Program
Memory
Extended
Microcontroller
Mode
Microcontroller
Modes
0000h
01FFFh
2000h
FE00h
FFFFh
ON-CHIP ON-CHIP ON-CHIP
OFF-CHIP ON-CHIP OFF-CHIP ON-CHIP OFF-CHIP ON-CHIP
PROGRAM SPACEDATA SPACE
Config. Bits
Test Memory
Boot ROM
PIC17C752/762
0000h
FFFFh
External
Program
Memory
External
Program
Memory
FFFFh
0000h
0000h
3FFFh
4000h
FE00h
FFFFh
OFF-CHIP ON-CHIP OFF-CHIP ON-CHIP OFF-CHIP ON-CHIP
Config. Bits
Test Memory
Boot ROM
PROGRAM SPACEDATA SPACE
ON-CHIPON-CHIP
00h
FFh 1FFh
120h
ON-CHIP
3FFFh
4000h
PIC17C756A/766
On-chip
Program
Memory
On-chip
Program
Memory
On-chip
Program
Memory
2FFh
220h
3FFh
320h
00h
FFh 1FFh
120h
2FFh
220h
3FFh
320h
00h
FFh 1FFh
120h
2FFh
220h
3FFh
320h
00h
FFh 1FFh
120h
00h
FFh 1FFh
120h
00h
FFh 1FFh
120h