ST Life.augmented

STWD100

Watchdog
  • active 活性

The STWD100 watchdog timer circuits are self-contained devices which prevent system failures that are caused by certain types of hardware errors (non-responding peripherals, bus contention, etc.) or software errors (bad code jump, code stuck in loop, etc.).

The STWD100 watchdog timer has an input, WDI, and an output, WDO. The input is used to clear the internal watchdog timer periodically within the specified timeout period, twd. While the system is operating correctly, it periodically toggles the watchdog input, WDI. If the system fails, the watchdog timer is not reset, a system alert is generated and the watchdog output, WDO, is asserted.

The STWD100 circuit also has an enable pin, EN, which can enable or disable the watchdog functionality. The ENpin is connected to the internal pull-down resistor. The device is enabled if the ENpin is left floating.

pdf Please read
Errata Sheet
pdf 下载
数据表

Key Features

  • Current consumption 13 μA typ.
  • Available watchdog timeout periods are 3.4 ms, 6.3 ms, 102 ms and 1.6 s
  • Chip enable input
  • Open drain or push-pull WDOoutput
  • Operating temperature range: –40 to +125 °C
  • Package SOT23-5, SC70-5 (SOT323-5)
  • ESD performance
  • HBM: 2000 V
  • RCDM: 1000 V

线路 图表

图案 资源

顶部

Technical Documentation

Product Specifications

描述 版本 大小
pdf
DS5579: Watchdog timer circuit
8.0 410 KB

Application Notes

描述 版本 大小
pdf
AN2841: LED dimming implemented on STM32™ microcontroller
1.3 782 KB

Technical Notes & Articles

描述 版本 大小
pdf
TN0941: Reset and supervisor ICs: frequently asked questions (FAQ)
1.0 329 KB

User Manual

描述 版本 大小
pdf
UM0574: STEVAL-ILL015V1 - LED dimmer demonstration board based on the STP24DP05 and STM32™
1.4 662 KB

Publications and Collaterals

Flyer

描述 版本 大小
pdf
Resets and supervisors - portfolio overview
1,345 KB
pdf
STWD100
1.0 717 KB

样品 & 购买

顶部
产品型号 Marketing StatusPackagePacking TypeOperating Temperature (min) Operating Temperature (max) Automotive GradeOrder From STUnit Price (US$)*
@ 1000
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STWD100NPWY3FActiveSOT23-5LTape And Reel-40125_Free Samples.52Distributor reported inventory date: 2014-11-28
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA21593000
P&SOrder NowASIA/PACIFIC12841
RS COMPONENTSOrder NowEUROPE7705
DIGIKEYOrder NowWORLDWIDE40501
MOUSEROrder NowWORLDWIDE27301
Ecopack2PDF
XML
STWD100NWWY3FActiveSOT23-5LTape And Reel-40125_-.517Distributor reported inventory date: 2014-11-28
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA30003000
DIGIKEYOrder NowWORLDWIDE29801
MOUSEROrder NowWORLDWIDE27501
Ecopack2-
STWD100NYWY3FActiveSOT23-5LTape And Reel-40125_-.52Distributor reported inventory date: 2014-11-28
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA74393000
AVNETOrder NowAMERICA55130
P&SOrder NowASIA/PACIFIC41231
ANGLIA LiveOrder NowEUROPE690003000
ARROWOrder NowEUROPE931000
RS COMPONENTSOrder NowEUROPE7055
DIGIKEYOrder NowWORLDWIDE146221
FUTUREOrder NowWORLDWIDE30003000
MOUSEROrder NowWORLDWIDE27951
Ecopack2PDF
XML
STWD100PYW83FActiveSOT323-5LTape And Reel-40125_-.52Distributor reported inventory date: 2014-11-28
Distributor NameRegionStockMin. order
DIGIKEYOrder NowWORLDWIDE33621
FUTUREOrder NowWORLDWIDE30003000
MOUSEROrder NowWORLDWIDE68431
Ecopack2-
STWD100YNPWY3FActiveSOT23-5LTape And Reel-40125Yes-.62Distributor reported inventory date: 2014-11-28
Distributor NameRegionStockMin. order
DIGIKEYOrder NowWORLDWIDE29261
MOUSEROrder NowWORLDWIDE33781
Ecopack2-
STWD100YNWWY3FActiveSOT23-5LTape And Reel-40125Yes-.621Distributor reported inventory date: 2014-11-28
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA30003000
DIGIKEYOrder NowWORLDWIDE9901
MOUSEROrder NowWORLDWIDE30001
Ecopack2-
STWD100YNYWY3FActiveSOT23-5LTape And Reel-40125Yes-.62Distributor reported inventory date: 2014-11-28
Distributor NameRegionStockMin. order
DIGIKEYOrder NowWORLDWIDE24571
MOUSEROrder NowWORLDWIDE28191
Ecopack2PDF
XML

(*) 建议零售价格仅用于预算,以美元为单位,每。的报价,以当地货币计算的价格,请联系您当地的 ST 销售办事处 或我们的 分销商
(**) 材料声明表格上提供st.com可以是一般的文件,根据最常用的包,包内的家庭。出于这个原因,他们可能不是100%准确,对于一个特定的设备。请联系我们 销售支持 在特定设备上的信息。
Feedback Form
Customer Feedback