Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.NET

X  

ST10F272Z2 Datasheet(PDF) 80 Page - STMicroelectronics

Part # ST10F272Z2
Description  16-bit MCU with 256 Kbyte Flash memory and 20 Kbyte RAM
Download  189 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST10F272Z2 Datasheet(HTML) 80 Page - STMicroelectronics

Back Button ST10F272Z2_08 Datasheet HTML 76Page - STMicroelectronics ST10F272Z2_08 Datasheet HTML 77Page - STMicroelectronics ST10F272Z2_08 Datasheet HTML 78Page - STMicroelectronics ST10F272Z2_08 Datasheet HTML 79Page - STMicroelectronics ST10F272Z2_08 Datasheet HTML 80Page - STMicroelectronics ST10F272Z2_08 Datasheet HTML 81Page - STMicroelectronics ST10F272Z2_08 Datasheet HTML 82Page - STMicroelectronics ST10F272Z2_08 Datasheet HTML 83Page - STMicroelectronics ST10F272Z2_08 Datasheet HTML 84Page - STMicroelectronics Next Button
Zoom Inzoom in Zoom Outzoom out
 80 / 189 page
background image
Watchdog timer
ST10F272Z2
80/189
19
Watchdog timer
The Watchdog Timer is a fail-safe mechanism which prevents the microcontroller from
malfunctioning for long periods of time.
The Watchdog Timer is always enabled after a reset of the chip and can only be disabled in
the time interval until the EINIT (end of initialization) instruction has been executed.
Therefore, the chip start-up procedure is always monitored. The software must be designed
to service the watchdog timer before it overflows. If, due to hardware or software related
failures, the software fails to do so, the watchdog timer overflows and generates an internal
hardware reset. It pulls the RSTOUT pin low in order to allow external hardware components
to be reset.
Each of the different reset sources is indicated in the WDTCON register:
Watchdog Timer Reset in case of an overflow
Software Reset in case of execution of the SRST instruction
Short, Long and Power-On Reset in case of hardware reset (and depending of reset
pulse duration and RPD pin configuration)
The indicated bits are cleared with the EINIT instruction. The source of the reset can be
identified during the initialization phase.
The Watchdog Timer is 16-bit, clocked with the system clock divided by 2 or 128. The high
Byte of the watchdog timer register can be set to a pre-specified reload value (stored in
WDTREL).
Each time it is serviced by the application software, the high byte of the watchdog timer is
reloaded. For security, rewrite WDTCON each time before the watchdog timer is serviced
The Table 47 and Table 48 show the watchdog time range for 40 MHz and 64 MHz CPU
clock respectively.
Table 47.
WDTREL reload value (fCPU = 40 MHz)
Reload value in WDTREL
Prescaler for fCPU = 40 MHz
2 (WDTIN = ‘0’)
128 (WDTIN = ‘1’)
FFh
12.8
µs
819.2
µs
00h
3.277 ms
209.7 ms
Table 48.
WDTREL reload value (fCPU = 64 MHz)
Reload value in WDTREL
Prescaler for fCPU = 64 MHz
2 (WDTIN = ‘0’)
128 (WDTIN = ‘1’)
FFh
8
µs
512
µs
00h
2.048 ms
131.1 ms


Similar Part No. - ST10F272Z2_08

ManufacturerPart #DatasheetDescription
logo
STMicroelectronics
ST10F272Z2Q3 STMICROELECTRONICS-ST10F272Z2Q3 Datasheet
3Mb / 179P
   16-bit MCU with 256 Kbyte Flash memory and 20 Kbyte RAM
ST10F272Z2T3 STMICROELECTRONICS-ST10F272Z2T3 Datasheet
3Mb / 179P
   16-bit MCU with 256 Kbyte Flash memory and 20 Kbyte RAM
More results

Similar Description - ST10F272Z2_08

ManufacturerPart #DatasheetDescription
logo
STMicroelectronics
ST10F272 STMICROELECTRONICS-ST10F272 Datasheet
3Mb / 179P
   16-bit MCU with 256 Kbyte Flash memory and 20 Kbyte RAM
ST10F272M STMICROELECTRONICS-ST10F272M Datasheet
3Mb / 175P
   16-bit MCU with 256 Kbyte Flash memory and 20 Kbyte RAM
ST10F272M STMICROELECTRONICS-ST10F272M_12 Datasheet
1Mb / 176P
   16-bit MCU with 256 Kbyte Flash memory and 20 Kbyte RAM
ST10F272B STMICROELECTRONICS-ST10F272B Datasheet
1Mb / 181P
   16-bit MCU with 256 Kbyte Flash memory and 12/20 Kbyte RAM
ST10F272B STMICROELECTRONICS-ST10F272B_12 Datasheet
1Mb / 188P
   16-bit MCU with 256 Kbyte Flash memory and 12/20 Kbyte RAM
ST10F273Z4 STMICROELECTRONICS-ST10F273Z4 Datasheet
1Mb / 188P
   16-bit MCU with 512 Kbyte Flash memory and 36 Kbyte RAM
January 2008 Rev 2
ST10F271Z1 STMICROELECTRONICS-ST10F271Z1 Datasheet
3Mb / 185P
   16-bit MCU with 128 Kbyte Flash memory and 12 Kbyte RAM
ST10F271 STMICROELECTRONICS-ST10F271 Datasheet
2Mb / 173P
   16-bit MCU with 128 Kbyte Flash memory and 12 Kbyte RAM
ST10F273E STMICROELECTRONICS-ST10F273E Datasheet
1Mb / 179P
   16-bit MCU with 512 Kbyte Flash memory and 36 Kbyte RAM
ST10F273 STMICROELECTRONICS-ST10F273 Datasheet
2Mb / 179P
   16-bit MCU with 512 Kbyte Flash memory and 36 Kbyte RAM
More results


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




Privacy Policy
ALLDATASHEET.NET
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   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