Overview
The STM6822LWY6F is a 5-pin supervisor IC manufactured by STMicroelectronics. It is part of the STM6xxx family, which provides microprocessor supervisory functions. This device includes a precision voltage reference and comparator to monitor the VCC input for out-of-tolerance conditions. When an invalid VCC condition occurs, the reset output (RST) is forced low or high, depending on the configuration. The STM6822LWY6F also features a watchdog timer and a push-button reset input, making it a comprehensive solution for system supervision.
Key Specifications
| Parameter | Value | Description |
|---|---|---|
| Package | SOT23-5L | Standard 5-pin package |
| VCC Monitoring | 5 V, 3.3 V, 3 V, 2.5 V | Precision monitoring of power supplies |
| RST Outputs | Active low, push-pull or open drain; Active high, push-pull | Type of reset outputs available |
| Reset Pulse Width | 1.4 ms, 200 ms, 240 ms (typ.) | Duration of the reset pulse |
| Watchdog Timeout Period | 1.6 s (typ.) | Timeout period for the watchdog timer |
| Manual Reset Input | MR | Push-button reset input |
| Supply Current | 3 μA (typ.) | Low supply current |
| Operating Temperature | –40 to +85 °C | Industrial grade operating temperature range |
| RoHS Compliance | Ecopack3 | Compliance with RoHS directive |
| RST Threshold (V) (typ) | 4.63 V (for STM6822LWY6F) | Typical reset threshold voltage |
Key Features
- Precision VCC monitoring for 5 V, 3.3 V, 3 V, and 2.5 V power supplies
- RST outputs available in active low, push-pull or open drain, and active high, push-pull configurations
- Reset pulse widths of 1.4 ms, 200 ms, and 240 ms (typ.)
- Watchdog timer with a timeout period of 1.6 s (typ.)
- Manual reset input (MR) for push-button reset
- Low supply current of 3 μA (typ.)
- Guaranteed RST assertion down to VCC = 1.0 V
- Operating temperature range of –40 to +85 °C (industrial grade)
- RoHS compliance with Ecopack3
Applications
The STM6822LWY6F is suitable for various applications requiring robust system supervision, including:
- Industrial systems
- Personal electronics
- Embedded systems requiring watchdog and reset functions
Q & A
- What is the primary function of the STM6822LWY6F?
The primary function of the STM6822LWY6F is to provide microprocessor supervisory functions, including precision VCC monitoring, watchdog timer, and push-button reset.
- What are the available reset output configurations for the STM6822LWY6F?
The reset outputs are available in active low (push-pull or open drain) and active high (push-pull) configurations.
- What is the typical watchdog timeout period for the STM6822LWY6F?
The typical watchdog timeout period is 1.6 seconds.
- What is the operating temperature range for the STM6822LWY6F?
The operating temperature range is –40 to +85 °C (industrial grade).
- Is the STM6822LWY6F RoHS compliant?
- What is the typical supply current of the STM6822LWY6F?
The typical supply current is 3 μA.
- What package type is the STM6822LWY6F available in?
The STM6822LWY6F is available in a standard 5-pin SOT23 package.
- What are some common applications for the STM6822LWY6F?
- What is the RST threshold voltage for the STM6822LWY6F?
The RST threshold voltage for the STM6822LWY6F is typically 4.63 V.
- Does the STM6822LWY6F have a manual reset input?
