Overview
The STM6822YWY6F is a 5-pin supervisor IC produced by STMicroelectronics, designed to provide microprocessor supervisory functions. This device is part of the STM6xxx family, which includes precision voltage monitoring, watchdog timer, and push-button reset capabilities. The STM6822YWY6F is particularly useful in ensuring that microprocessors operate within valid voltage ranges and can reset the system if any out-of-tolerance conditions occur.
Key Specifications
| Parameter | Value | Description |
|---|---|---|
| VCC Monitoring | 5, 3.3, 3, or 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.) | Time before the watchdog timer expires |
| Manual Reset Input (MR) | Active low with internal 52 kΩ pull-up | Input for manual reset |
| Supply Current | 3 μA (typ.) | Low power consumption |
| RST Assertion | Guaranteed down to VCC = 1.0 V | Ensures reset assertion even at low VCC levels |
| Operating Temperature | –40 to +85 °C (industrial grade) | Temperature range for operation |
| Package | SOT23-5L | Package type and pin count |
| RoHS Compliance | Ecopack3 | Compliance with RoHS directive |
| RST Threshold (V) | 2 V (typ.) for STM6822YWY6F | Voltage threshold for reset assertion |
Key Features
- Precision VCC monitoring of 5, 3.3, 3, or 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 timeout period of 1.6 s (typ.)
- Manual reset input (MR) with internal 52 kΩ pull-up
- 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 lead-free components (Ecopack3)
Applications
The STM6822YWY6F is suitable for various applications requiring reliable microprocessor supervision, including:
- Industrial control systems
- Personal electronics
- Automotive systems
- Medical devices
- Any system requiring precise voltage monitoring and reset capabilities
Q & A
- What is the primary function of the STM6822YWY6F?
The primary function of the STM6822YWY6F is to provide microprocessor supervisory functions, including precision voltage monitoring, watchdog timer, and push-button reset capabilities.
- What are the available reset output configurations for the STM6822YWY6F?
The STM6822YWY6F offers reset outputs in active low (push-pull or open drain) and active high (push-pull) configurations.
- What is the typical watchdog timeout period for the STM6822YWY6F?
The typical watchdog timeout period is 1.6 seconds.
- How does the manual reset input (MR) work on the STM6822YWY6F?
The manual reset input (MR) is an active low input with an internal 52 kΩ pull-up. A logic low on MR asserts the reset output, which remains asserted as long as MR is low and for the reset pulse width after MR returns high.
- What is the operating temperature range for the STM6822YWY6F?
The operating temperature range is –40 to +85 °C (industrial grade).
- Is the STM6822YWY6F RoHS compliant?
- What is the typical supply current of the STM6822YWY6F?
The typical supply current is 3 μA.
- What package type is the STM6822YWY6F available in?
The STM6822YWY6F is available in a SOT23-5L package.
- What is the RST threshold voltage for the STM6822YWY6F?
The RST threshold voltage for the STM6822YWY6F is typically 2 V.
- Can the watchdog function be disabled on the STM6822YWY6F?
