поискавой системы для электроныых деталей
  Russian  ▼
ALLDATASHEETRU.COM

X  

Preview PDF HTML

AT80C51RA2-RLSIV датащи(PDF) 50 Page - ATMEL Corporation

номер детали AT80C51RA2-RLSIV
подробное описание детали  High Performance 8-bit Microcontroller
PDF  86 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
производитель  ATMEL [ATMEL Corporation]
домашняя страница  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT80C51RA2-RLSIV датащи(HTML) 50 Page - ATMEL Corporation

Back Button AT80C51RA2-RLSIV Datasheet HTML 46Page - ATMEL Corporation AT80C51RA2-RLSIV Datasheet HTML 47Page - ATMEL Corporation AT80C51RA2-RLSIV Datasheet HTML 48Page - ATMEL Corporation AT80C51RA2-RLSIV Datasheet HTML 49Page - ATMEL Corporation AT80C51RA2-RLSIV Datasheet HTML 50Page - ATMEL Corporation AT80C51RA2-RLSIV Datasheet HTML 51Page - ATMEL Corporation AT80C51RA2-RLSIV Datasheet HTML 52Page - ATMEL Corporation AT80C51RA2-RLSIV Datasheet HTML 53Page - ATMEL Corporation AT80C51RA2-RLSIV Datasheet HTML 54Page - ATMEL Corporation Next Button
Zoom Inzoom in Zoom Outzoom out
 50 / 86 page
background image
50
4188F–8051–01/08
AT/TS8xC51Rx2
7.1
Reduced EMI Mode
The ALE signal is used to demultiplex address and data buses on port 0 when used with exter-
nal program or data memory. Nevertheless, during internal code execution, ALE signal is still
generated. In order to reduce EMI, ALE signal can be disabled by setting AO bit.
The AO bit is located in AUXR register at bit location 0. As soon as AO is set, ALE is no longer
output but remains active during MOVX and MOVC instructions and external fetches. During
ALE disabling, ALE pin is weakly pulled high.
Table 7-2.
AUXR Register
AUXR - Auxiliary Register (8Eh)
Reset Value = XXXX XX00b
Not bit addressable
7
6
5
4
3
2
1
0
-
-
-
-
-
-
EXTRAM
AO
Bit
Number
Bit
Mnemonic
Description
7
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
6
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
5
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
4
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
3
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
2
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
1
EXTRAM
EXTRAM bit
See Table 6-1.
0
AO
ALE Output bit
Clear to restore ALE operation during internal fetches.
Set to disable ALE operation during internal fetches.



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86


датащи скачать

Go To PDF Page


ссылки URL



Вашему бизинису помогли Аллдатащит?  [ DONATE ] 

Что такое Аллдатащит   |   реклама   |   контакт   |   Конфиденциальность   |   Ссылка на техническое описание    |   обмен ссыками   |   поиск по производителю
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com