PIC24FJ128GA310-I Datasheet, PDF (73/406 Pages) Microchip Technology – 64/80/100-Pin, General Purpose, 16-Bit Flash Microcontrollers with LCD Controller and nanoWatt XLP Technology

PIC24FJ128GA310 FAMILY
FIGURE 4-10:
PROGRAM SPACE VISIBILITY OPERATION TO ACCESS LOWER WORD
When DSRPAG<9:8> = 10 and EA<15> = 1
DSRPAG
202h
Program Space
23
15
0 _000000h
010000h
The data in the page
designated by DSRPAG
is mapped into the
upper half of the data
memory space....
017FFEh
Data Space
0000h
Data EA<14:0>
8000h
7FFFFEh
EDS Window
FFFFh
...while the lower
15 bits of the EA
specify an exact
address within the
EDS area. This corre-
sponds exactly to the
same lower 15 bits of
the actual program
space address.
FIGURE 4-11:
PROGRAM SPACE VISIBILITY OPERATION TO ACCESS UPPER WORD
When DSRPAG<9:8> = 11 and EA<15> = 1
DSRPAG
302h
Program Space
23
15
0 _000000h
010001h
The data in the page
designated by DSRPAG
is mapped into the
upper half of the data
memory space....
017FFFh
Data Space
0000h
Data EA<14:0>
8000h
7FFFFEh
EDS Window
FFFFh
...while the lower
15 bits of the EA
specify an exact
address within the
EDS area. This corre-
sponds exactly to the
same lower 15 bits of
the actual program
space address.
 2010-2011 Microchip Technology Inc.
DS39996F-page 73