Product overview
描述
The STWD100 watchdog timer circuits are self-contained devices which prevent system failures that are caused by certain types of hardware errors (such as, non-responding peripherals and bus contention) or software errors (such as a bad code jump and a code stuck in loop).
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 EN pin is connected to the internal pull-down resistor. The device is enabled if the EN pin is left floating.
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All 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-pullWDO output
- Operating temperature range: –40 to 125 °C
- Packages: SOT23-5 and SC70-5 (SOT323-5)
- ESD performance
- HBM: 2000 V
- RCDM: 1000 V
- Automotive qualified
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STMicroelectronics - STWD100
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Quality and Reliability
| Part Number | Marketing Status | Package | Grade | 符合RoHS级别 | Longevity Commitment | Longevity Starting Date | Material Declaration** |
|---|---|---|---|---|---|---|---|
| STWD100NPWY3F | Active 产品已量产 | SOT23-5L | Industrial | Ecopack3 | - | - | |
| STWD100NWWY3F | Active 产品已量产 | SOT23-5L | Industrial | Ecopack3 | - | - | |
| STWD100NXWY3F | Active 产品已量产 | SOT23-5L | Industrial | Ecopack3 | - | - | |
| STWD100NYWY3F | Active 产品已量产 | SOT23-5L | Industrial | Ecopack3 | - | - | |
| STWD100PYW83F | Active 产品已量产 | SOT323-5L | Industrial | Ecopack2 (**) | - | - | |
| STWD100YNPWY3F | Active 产品已量产 | SOT23-5L | Automotive | Ecopack3 | - | - | |
| STWD100YNWWY3F | Active 产品已量产 | SOT23-5L | Automotive | Ecopack3 | - | - | |
| STWD100YNXWY3F | Active 产品已量产 | SOT23-5L | Automotive | Ecopack3 | - | - | |
| STWD100YNYWY3F | Active 产品已量产 | SOT23-5L | Automotive | Ecopack3 | - | - |
(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此，它们可能不是100%适用于特定的设备。有关特定设备的信息，请联系 销售支持。
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Sample & Buy
| Part Number | 供货状态 | Budgetary Price (US$)*/Qty | 从ST订购 | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating temperature (°C) | Operating Temperature (°C) (max) | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 最小值 | 最大值 | |||||||||||||
| STWD100YNYWY3F | | | distributors 无法联系到经销商，请联系我们的销售办事处 | |||||||||||
| STWD100NPWY3F | | | distributors 无法联系到经销商，请联系我们的销售办事处 | |||||||||||
| STWD100YNWWY3F | | | distributors 无法联系到经销商，请联系我们的销售办事处 | |||||||||||
| STWD100NWWY3F | | | distributors 无法联系到经销商，请联系我们的销售办事处 | |||||||||||
| STWD100NYWY3F | | | distributors 无法联系到经销商，请联系我们的销售办事处 | |||||||||||
| STWD100YNXWY3F | | | distributors 无法联系到经销商，请联系我们的销售办事处 | |||||||||||
| STWD100PYW83F | | | distributors 无法联系到经销商，请联系我们的销售办事处 | |||||||||||
| STWD100YNPWY3F | | | distributors 无法联系到经销商，请联系我们的销售办事处 | |||||||||||
| STWD100NXWY3F | | | distributors 无法联系到经销商，请联系我们的销售办事处 | |||||||||||
STWD100YNYWY3F Active
STWD100NPWY3F Active
STWD100YNWWY3F Active
STWD100NWWY3F Active
STWD100NYWY3F Active
STWD100YNXWY3F Active
STWD100PYW83F Active
STWD100YNPWY3F Active
STWD100NXWY3F Active