产品概述
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.
-
所有功能
- 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
电路原理图
特别推荐
EDA符号、封装和3D模型
意法半导体 - STWD100
Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.
Please select one model supplier :
符号
封装
3D模型
质量与可靠性
| 产品型号 | Marketing Status | 包 | 等级规格 | 符合RoHS级别 | Longevity Commitment | Longevity Starting Date | 材料声明** |
|---|---|---|---|---|---|---|---|
| STWD100NPWY3F | 批量生产 | SOT23-5L | 工业 | Ecopack3 | - | - | |
| STWD100NWWY3F | 批量生产 | SOT23-5L | 工业 | Ecopack3 | - | - | |
| STWD100NXWY3F | 批量生产 | SOT23-5L | 工业 | Ecopack3 | - | - | |
| STWD100NYWY3F | 批量生产 | SOT23-5L | 工业 | Ecopack3 | - | - | |
| STWD100PYW83F | 批量生产 | SOT323-5L | 工业 | Ecopack2 (**) | - | - | |
| STWD100YNPWY3F | 批量生产 | SOT23-5L | 汽车应用 | Ecopack3 | - | - | |
| STWD100YNWWY3F | 批量生产 | SOT23-5L | 汽车应用 | Ecopack3 | - | - | |
| STWD100YNXWY3F | 批量生产 | SOT23-5L | 汽车应用 | Ecopack3 | - | - | |
| STWD100YNYWY3F | 批量生产 | SOT23-5L | 汽车应用 | 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。
样片和购买
| 产品型号 | 供货状态 | Budgetary Price (US$)*/Qty | 从ST订购 | Order from distributors | 包 | 包装类型 | 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 批量生产
STWD100NPWY3F 批量生产
STWD100YNWWY3F 批量生产
STWD100NWWY3F 批量生产
STWD100NYWY3F 批量生产
STWD100YNXWY3F 批量生产
STWD100PYW83F 批量生产
STWD100YNPWY3F 批量生产
STWD100NXWY3F 批量生产