Electronic Components Datasheet Search
  English  ▼

X  

Preview PDF HTML

4513 Datasheet(PDF) 141 Page - Renesas Technology Corp

Part # 4513
Description  4-BIT SINGLE-CHIP MICROCOMPUTER
PDF  210 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

4513 Datasheet(HTML) 141 Page - Renesas Technology Corp

Back Button 4513 Datasheet HTML 137Page - Renesas Technology Corp 4513 Datasheet HTML 138Page - Renesas Technology Corp 4513 Datasheet HTML 139Page - Renesas Technology Corp 4513 Datasheet HTML 140Page - Renesas Technology Corp 4513 Datasheet HTML 141Page - Renesas Technology Corp 4513 Datasheet HTML 142Page - Renesas Technology Corp 4513 Datasheet HTML 143Page - Renesas Technology Corp 4513 Datasheet HTML 144Page - Renesas Technology Corp 4513 Datasheet HTML 145Page - Renesas Technology Corp Next Button
Zoom Inzoom in Zoom Outzoom out
 141 / 210 page
background image
APPLICATION
2.3 Timers
2-38
4513/4514 Group User’s Manual
Fig. 2.3.9 Watchdog timer setting example
g0 h
•
•
•
••
•
ΠActivate Watchdog Timer
Watchdog timer is activated.
Watchdog timer enable flag WEF “1”
Watchdog timer enable flag WEF set
(WRST instruction)
Main routine (every 20 ms)
Reset Flag WDF
Watchdog timer flag WDF1 is reset.
“0”
Watchdog timer flag WDF1 cleared
(WRST instruction)
Main routine execution
Repeat
Do not clear watchdog timer WDF flag in interrupt service routine.
Interrupt may be executed even if program run-away occurs.
When going to RAM back-up mode
WRST
; WDF flag cleared
EPOF
; POF instruction enabled
POF
↓
Oscillation stop (RAM back-up mode)
In the RAM back-up mode, WEF, WDF1 and WDF2 flags are initialized. However, when WDF2 flag is set to “1”, at the
same time, system enters RAM back-up mode, microcomputer may be reset. When watchdog timer and RAM back-up
mode are used, execute the WRST instruction before system enters the RAM back-up mode to initialize WDF flag.
“!”: it can be “0” or “1.”



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