công cụ tìm kiếm bảng dữ liệu linh kiện điện tử
  Vietnamese  ▼
ALLDATASHEET.VN

X  

Preview PDF HTML

AT89C5131A-RDTIL bảng dữ liệu(PDF) 157 Page - ATMEL Corporation

tên linh kiện AT89C5131A-RDTIL
Giải thích chi tiết về linh kiện  8-bit Flash Microcontroller with Full Speed USB Device
PDF  184 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
nhà sản xuất  ATMEL [ATMEL Corporation]
Trang chủ  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT89C5131A-RDTIL bảng dữ liệu(HTML) 157 Page - ATMEL Corporation

Back Button AT89C5131A-RDTIL Datasheet HTML 153Page - ATMEL Corporation AT89C5131A-RDTIL Datasheet HTML 154Page - ATMEL Corporation AT89C5131A-RDTIL Datasheet HTML 155Page - ATMEL Corporation AT89C5131A-RDTIL Datasheet HTML 156Page - ATMEL Corporation AT89C5131A-RDTIL Datasheet HTML 157Page - ATMEL Corporation AT89C5131A-RDTIL Datasheet HTML 158Page - ATMEL Corporation AT89C5131A-RDTIL Datasheet HTML 159Page - ATMEL Corporation AT89C5131A-RDTIL Datasheet HTML 160Page - ATMEL Corporation AT89C5131A-RDTIL Datasheet HTML 161Page - ATMEL Corporation Next Button
Zoom Inzoom in Zoom Outzoom out
 157 / 184 page
background image
157
AT89C5131A-L
4338F–USB–08/07
ONCE Mode (ON
Chip Emulation)
The ONCE mode facilitates testing and debugging of systems using AT89C5131A-L
without removing the circuit from the board. The ONCE mode is invoked by driving cer-
tain pins of the AT89C5131A-L; the following sequence must be exercised:
•
Pull ALE low while the device is in reset (RST high) and PSEN is high.
•
Hold ALE low as RST is deactivated.
While the AT89C5131A-L is in ONCE mode, an emulator or test CPU can be used to
drive the circuit Table 111 shows the status of the port pins during ONCE mode.
Normal operation is restored when normal reset is applied.
Table 111. External Pin Status during ONCE Mode
ALE
PSEN
Port 0
Port 1
Port 2
Port 3
Port I2
XTAL1/2
Weak
pull-up
Weak
pull-up
Float
Weak
pull-up
Weak
pull-up
Weak
pull-up
Float
Active



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 87 88 89 90 91 92 93 94 95 96 97 98 99 100  ...More


bảng dữ liệu tải về

Go To PDF Page


Link URL



Cho đến nay ALLDATASHEET có giúp ích cho doanh nghiệp của bạn hay không?  [ DONATE ] 

Alldatasheet là   |   Quảng cáo   |   Liên lạc với chúng tôi   |   Chính sách bảo mật   |   Liên kết đến bảng dữ liệu    |   Trao đổi link   |   Tìm kiếm theo nhà sản xuất
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