PIC24FJ64GA705 Datasheet, PDF (62/412 Pages) –

PIC24FJ256GA705 FAMILY
FIGURE 4-9:
PROGRAM SPACE VISIBILITY OPERATION TO ACCESS LOWER WORD
When DSRPAG<9:8> = 10 and EA<15> = 1:
DSRPAG
202h
The data in the page
designated by DSRPAG
is mapped into the
upper half of the data
memory space....
Program Space
23
15
0 _000000h
010000h
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 4-10:
PROGRAM SPACE VISIBILITY OPERATION TO ACCESS UPPER WORD
When DSRPAG<9:8> = 11 and EA<15> = 1:
DSRPAG
302h
The data in the page
designated by DSRPAG
is mapped into the
upper half of the data
memory space....
Program Space
23
15
0 _000000h
010001h
017FFFh
Data Space
0000h
Data EA<14:0>
8000h
7FFFFEh
EDS Window
...while the lower
15 bits of the EA
specify an exact
FFFFh address within the
EDS area. This corre-
sponds exactly to the
same lower 15 bits of
the actual program
space address.
DS30010118B-page 62
 2016 Microchip Technology Inc.