Overview
The STWD100YNYWY3F is a watchdog timer circuit manufactured by STMicroelectronics. This device is designed to prevent system failures caused by hardware or software errors, such as non-responding peripherals, bus contention, bad code jumps, or code loops. It operates as a self-contained watchdog timer that monitors the system's operation and generates a system alert if the system fails to reset the watchdog timer within the specified timeout period.
Key Specifications
| Attribute | Value |
|---|---|
| Package Style | SOT-23-5 (SOT-25) |
| Mounting Method | Surface Mount (SMD) |
| Operating Voltage Range | 2.7V to 5.5V |
| VCC Supply Current | 26µA max |
| Watchdog Timeout Period | 6.3ms |
| WDI Glitch Rejection | 100ns |
| WDO Output Type | Open Drain or Push-Pull (active low) |
| ESD Performance | HBM: 2000V, CDM: 1000V |
| Temperature Range | -40°C to 125°C |
| AEC-Q100 Qualification | Yes |
Key Features
- Monitors system operation to prevent failures due to hardware or software errors.
- Input (WDI) to clear the internal watchdog timer periodically.
- Output (WDO) that asserts a system alert if the watchdog timer is not reset within the specified timeout period.
- Chip enable input for additional control.
- Low power consumption with a maximum VCC supply current of 26µA.
- High ESD performance with HBM: 2000V and CDM: 1000V.
- Automotive qualified (AEC-Q100).
- Compact 5-lead SOT23 package.
Applications
- Telecommunications alarm systems.
- Industrial equipment.
- Networking devices.
- Medical equipment.
- Uninterruptible Power Supplies (UPS).
- Automotive systems.
Q & A
- What is the primary function of the STWD100YNYWY3F? The primary function is to act as a watchdog timer to prevent system failures caused by hardware or software errors.
- What is the operating voltage range of the STWD100YNYWY3F? The operating voltage range is from 2.7V to 5.5V.
- What is the watchdog timeout period? The watchdog timeout period is 6.3ms.
- What types of outputs does the STWD100YNYWY3F have? The STWD100YNYWY3F has open drain or push-pull (active low) outputs.
- What is the temperature range for the STWD100YNYWY3F? The temperature range is from -40°C to 125°C.
- Is the STWD100YNYWY3F automotive qualified? Yes, it is AEC-Q100 qualified.
- What is the package style of the STWD100YNYWY3F? The package style is SOT-23-5 (SOT-25).
- What is the maximum VCC supply current? The maximum VCC supply current is 26µA.
- What are some typical applications of the STWD100YNYWY3F? Typical applications include telecommunications alarm systems, industrial equipment, networking, medical equipment, UPS, and automotive systems.
- What is the ESD performance of the STWD100YNYWY3F? The ESD performance is HBM: 2000V and CDM: 1000V.
