Motor de Búsqueda de Datasheet de Componentes Electrónicos
  Mexican  ▼
ALLDATASHEET.COM.MX

X  

Preview PDF HTML

STR720 Datasheet(PDF) 303 Page - STMicroelectronics

No. de pieza STR720
Descripción Electrónicos  ARM720T 16/32-BIT MCU WITH 16K RAM, USB, CAN, 3 TIMERS, ADC, 6 COMMUNICATIONS INTERFACES
PDF  401 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STR720 Datasheet(HTML) 303 Page - STMicroelectronics

Back Button STR720 Datasheet HTML 299Page - STMicroelectronics STR720 Datasheet HTML 300Page - STMicroelectronics STR720 Datasheet HTML 301Page - STMicroelectronics STR720 Datasheet HTML 302Page - STMicroelectronics STR720 Datasheet HTML 303Page - STMicroelectronics STR720 Datasheet HTML 304Page - STMicroelectronics STR720 Datasheet HTML 305Page - STMicroelectronics STR720 Datasheet HTML 306Page - STMicroelectronics STR720 Datasheet HTML 307Page - STMicroelectronics Next Button
Zoom Inzoom in Zoom Outzoom out
 303 / 401 page
background image
STR720 - WATCHDOG TIMER (WDG)
303/401
20 WATCHDOG TIMER (WDG)
20.1 Introduction
The Watchdog Timer peripheral can be used as free-running timer or as Watchdog to resolve
STR720 microcontroller malfunctions due to hardware or software failures.
20.2 Main Features
■
16-bit down Counter
■
8-bit clock Prescaler
■
Safe Reload Sequence
■
Free-running Timer mode
■
End of Counting interrupt generation
■
Second clock source (4 kHz derived from 32 kHz RTC clock
20.3 Functional Description
Figure 42 shows the functional blocks of the Watchdog Timer module. The module can work
as Watchdog or as Free-running Timer. In both working modes the 16-bit Counter value can
be accessed through a reading of the WDTCNT register.
20.3.1
Free-running Timer mode
If the WE bit of WDTCR register is not written to ‘1’ by software, the peripheral enter in
Free-running Timer mode. When in this operating mode as the SC bit of WDTCR register is
written to ‘1’ the WDTVR value is loaded in the Counter and the Counter starts counting down.
Figure 42. Watchdog Timer Functional Block
EOC
APB_CLK
IRQ /
EE
ECM
EC
16-bit Counter
WDTVR Register
CLK_AF/8
8-bit Prescaler
SC
WDTPR Register
WE
SYS RST
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 Descarga

Go To PDF Page


Enlace URL



¿ALLDATASHEET es útil para Ud.?  [ DONATE ] 

Todo acerca de Alldatasheet   |   Publicidad   |   Contáctenos   |   Política de Privacidad   |   Enlace a la hoja de datos    |   Intercambio de Enlaces   |   Lista de Fabricantes
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