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DVR21 データシート(PDF) 62 Page - Microchip Technology

部品番号 DVR21
部品情報  16-Bit General Purpose Microcontrollers with 256-Kbyte Flash and 16-Kbyte RAM in Low Pin Count Packages
PDF  416 Pages
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メーカー  MICROCHIP [Microchip Technology]
ホームページ  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

DVR21 データシート(HTML) 62 Page - Microchip Technology

Back Button DVR21 Datasheet HTML 58Page - Microchip Technology DVR21 Datasheet HTML 59Page - Microchip Technology DVR21 Datasheet HTML 60Page - Microchip Technology DVR21 Datasheet HTML 61Page - Microchip Technology DVR21 Datasheet HTML 62Page - Microchip Technology DVR21 Datasheet HTML 63Page - Microchip Technology DVR21 Datasheet HTML 64Page - Microchip Technology DVR21 Datasheet HTML 65Page - Microchip Technology DVR21 Datasheet HTML 66Page - Microchip Technology Next Button
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PIC24FJ256GA705 FAMILY
DS30010118D-page 62
 2016-2018 Microchip Technology Inc.
FIGURE 4-9:
PROGRAM SPACE VISIBILITY OPERATION TO ACCESS LOWER WORD
FIGURE 4-10:
PROGRAM SPACE VISIBILITY OPERATION TO ACCESS UPPER WORD
23
15
0
DSRPAG
Data Space
Program Space
0000h
8000h
FFFFh
202h
000000h
7FFFFEh
010000h
017FFEh
When DSRPAG<9:8> = 10 and EA<15> = 1:
EDS Window
The data in the page
designated by DSRPAG
is mapped into the
upper half of the data
memory space....
Data EA<14:0>
...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.
23
15
0
DSRPAG
Data Space
Program Space
0000h
8000h
FFFFh
302h
000000h
7FFFFEh
010001h
017FFFh
When DSRPAG<9:8> = 11 and EA<15> = 1:
The data in the page
designated by DSRPAG
is mapped into the
upper half of the data
memory space....
Data EA<14:0>
...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.
EDS Window



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