Electronic Components Datasheet Search
  English  ▼

X  

Preview PDF HTML

7477 Datasheet(PDF) 166 Page - Renesas Technology Corp

Part # 7477
Description  8-BIT SINGLE-CHIP MICROCOMPUTER 740 FAMILY / 7470 SERIES
PDF  354 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

7477 Datasheet(HTML) 166 Page - Renesas Technology Corp

Back Button 7477 Datasheet HTML 162Page - Renesas Technology Corp 7477 Datasheet HTML 163Page - Renesas Technology Corp 7477 Datasheet HTML 164Page - Renesas Technology Corp 7477 Datasheet HTML 165Page - Renesas Technology Corp 7477 Datasheet HTML 166Page - Renesas Technology Corp 7477 Datasheet HTML 167Page - Renesas Technology Corp 7477 Datasheet HTML 168Page - Renesas Technology Corp 7477 Datasheet HTML 169Page - Renesas Technology Corp 7477 Datasheet HTML 170Page - Renesas Technology Corp Next Button
Zoom Inzoom in Zoom Outzoom out
 166 / 354 page
background image
1-149
7470/7471/7477/7478 GROUP USER’S MANUAL
HARDWARE
1.15 Reset
1.15 Reset
_________________________
The microcomputer is reset by applying the “L” level to the RESET pin for 2
µs or more when the power
___________________________
source voltage is within the standard value range. After that, when the “H” level is applied to the RESET
pin, the reset state of the microcomputer is released, so that the program is run starting with the reset
vector address.
1.15.1 Operation description
Figure 1.15.1 shows an internal processing sequence after reset release.
Fig. 1.15.1 Internal processing sequence after reset release
Internal clock
φ
FFFE16
AH
AL
FFFF16
AL,AH
XIN
RESET
Internal reset
Address bus
Data bus
SYNC
VCC
Internal clock
φ : CPU reference clock frequency = f(XIN)/2 (ordinary mode immediately
after reset release)
AH, AL : Content of reset vector address
: Undefined
SYNC : CPU operation code fetch cycle
(This is a internal signal, so that it cannot be observed from the external unit.)
32768 counts of X IN pin input signal
2
µs or more
XIN



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


Datasheet Download

Go To PDF Page


Link URL



Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link to Datasheet    |   Link Exchange   |   Manufacturer List
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