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AT89C51AC3-RDTUM 数据表(PDF) 55 Page - ATMEL Corporation

部件名 AT89C51AC3-RDTUM
功能描述  Enhanced 8-bit Microcontroller with 64KB Flash Memory
PDF  143 Pages
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制造商  ATMEL [ATMEL Corporation]
网页  http://www.atmel.com
标志 ATMEL - ATMEL Corporation

AT89C51AC3-RDTUM 数据表(HTML) 55 Page - ATMEL Corporation

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55
AT89C51AC3
4383B–8051–01/05
Table 22. Read MOVC A, @DPTR
Code Execution
FCON Register
ENBOOT
DPTR
FM1
FM0
XROW
Hardware
Byte
External
Code
FMOD1 FMOD0
FPS
From FM0
00
X
0
0000h to FFFFh
OK
1
0000h to F7FF
OK
F800h to FFFFh
Do not use this configuration
01
X
X
0000 to 007Fh
See (1)
OK
10
X
X
X
OK
11
X
0
000h to FFFFh
OK
1
0000h to F7FF
OK
F800h to FFFFh
Do not use this configuration
From FM1
(ENBOOT =1
00
0
1
0000h to F7FF
OK
F800h to FFFFh
OK
0X
NA
1
1X
OK
0X
NA
01
X
1
0000h to 007h
See (2)
OK
0NA
10
X
1
X
OK
0NA
11
X
1
000h to FFFFh
OK
0NA
External code :
EA=0 or Code
Roll Over
X0
X
X
X
OK
1. For DPTR higher than 007Fh only lowest 7 bits are decoded, thus the behavior is the same as for addresses from 0000h to
007Fh
2. For DPTR higher than 007Fh only lowest 7 bits are decoded, thus the behavior is the same as for addresses from 0000h to
007Fh



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