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

X  

Preview PDF HTML

7643 bảng dữ liệu(PDF) 299 Page - Renesas Technology Corp

tên linh kiện 7643
Giải thích chi tiết về linh kiện  8-BIT SINGLE-CHIP MICROCOMPUTER
PDF  424 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
nhà sản xuất  RENESAS [Renesas Technology Corp]
Trang chủ  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

7643 bảng dữ liệu(HTML) 299 Page - Renesas Technology Corp

Back Button 7643 Datasheet HTML 295Page - Renesas Technology Corp 7643 Datasheet HTML 296Page - Renesas Technology Corp 7643 Datasheet HTML 297Page - Renesas Technology Corp 7643 Datasheet HTML 298Page - Renesas Technology Corp 7643 Datasheet HTML 299Page - Renesas Technology Corp 7643 Datasheet HTML 300Page - Renesas Technology Corp 7643 Datasheet HTML 301Page - Renesas Technology Corp 7643 Datasheet HTML 302Page - Renesas Technology Corp 7643 Datasheet HTML 303Page - Renesas Technology Corp Next Button
Zoom Inzoom in Zoom Outzoom out
 299 / 424 page
background image
Rev.2.00
Aug 28, 2006
page 178 of 202
7643 Group
REJ09B0133-0200
APPLICATION
2.8 External device connection
(2) RDY wait
RDY wait is selected by setting “10” to the slow memory wait mode select bits (b3, b2 of CPMB).
When a fixed time of “L” (tsu) is input to the RDY pin at the beginning of a read/write cycle (before
φ cycle falls), the MCU goes to the RDY state. Then the read/write cycle can be extended by one
to three
φ cycles. The number of φ cycles to be extended can be selected by the slow memory
wait select bits (b1, b0 of CPMB).
Even if “L” is input to the RDY pin at the end of waited read/write cycle, the cycle is not extended.
When a fixed time of “H” (tsu) is input to the RDY pin at the beginning of a read/write cycle (before
φ cycle falls), the MCU is released from the RDY state.
Figure 2.8.5 shows the RDY wait timing example.
IN
OUT
IN
OUT
RDY
φOUT
ADOUT
DB IN/OUT
RD
WR
1 bus cycle
<< No Wait >>
Address
Address
<< Wait >>
1 bus cycle
φOUT
ADOUT
DB IN/OUT
RD
WR
Address
Address
tsu(RDY-
φ)
tsu(RDY-
φ)
Note: This example is the 1-cycle RDY wait .
Refer to Chapter 1 “Slow Memory Wait in PROCESSOR MODE” for 2- and
3-cycle RDY wait timings.
Fig. 2.8.5 RDY wait timing example



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