Overview
The STM6321RWY6F 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 STM6321RWY6F also features a watchdog timer and a manual reset input (MR), ensuring reliable operation of electronic systems.
Key Specifications
| Parameter | Value | Notes |
|---|---|---|
| Package | SOT23-5L | Standard 5-pin package |
| VCC Monitoring | 5, 3.3, 3, or 2.5 V | Precision voltage monitoring |
| RST Outputs | Active low, push-pull or open drain; Active high, push-pull | Configurable reset outputs |
| Reset Pulse Width | 1.4 ms, 200 ms, 240 ms (typ.) | Varying pulse widths available |
| Watchdog Timeout Period | 1.6 s (typ.) | Typical watchdog timeout |
| Manual Reset Input (MR) | Available | Manual reset capability |
| Supply Current | 3 μA (typ.) | Low supply current |
| Operating Temperature | –40 to +85 °C | Industrial grade temperature range |
| RoHS Compliance | Ecopack3 | Lead-free components compliant with RoHS directive |
| RST Threshold (V) (typ) | 2.63 V | Typical reset threshold voltage for STM6321RWY6F |
Key Features
- Precision VCC monitoring of 5, 3.3, 3, or 2.5 V power supplies
- RST outputs (active low, push-pull or open drain; active high, push-pull)
- Reset pulse width of 1.4 ms, 200 ms, and 240 ms (typ.)
- Watchdog timeout period of 1.6 s (typ.)
- Manual reset input (MR)
- Low supply current - 3 μA (typ.)
- Guaranteed RST assertion down to VCC = 1.0 V
- Operating temperature: –40 to +85 °C (industrial grade)
- RoHS compliance - Lead-free components compliant with the RoHS directive
Applications
- Communications equipment
- Computers and peripherals
- Industrial applications
- Personal electronics
Q & A
- What is the primary function of the STM6321RWY6F?
The primary function of the STM6321RWY6F is to provide microprocessor supervisory functions, including precision VCC monitoring, watchdog timer, and manual reset capabilities.
- What are the available VCC monitoring voltages for the STM6321RWY6F?
The STM6321RWY6F can monitor VCC voltages of 5, 3.3, 3, or 2.5 V.
- What types of RST outputs are available on the STM6321RWY6F?
The STM6321RWY6F offers RST outputs that can be configured as active low (push-pull or open drain) or active high (push-pull).
- What is the typical watchdog timeout period for the STM6321RWY6F?
The typical watchdog timeout period for the STM6321RWY6F is 1.6 seconds.
- Does the STM6321RWY6F have a manual reset input?
Yes, the STM6321RWY6F includes a manual reset input (MR).
- What is the typical supply current of the STM6321RWY6F?
The typical supply current of the STM6321RWY6F is 3 μA.
- What is the operating temperature range for the STM6321RWY6F?
The operating temperature range for the STM6321RWY6F is –40 to +85 °C (industrial grade).
- Is the STM6321RWY6F RoHS compliant?
Yes, the STM6321RWY6F is RoHS compliant with lead-free components.
- What is the typical RST threshold voltage for the STM6321RWY6F?
The typical RST threshold voltage for the STM6321RWY6F is 2.63 V.
- In what package is the STM6321RWY6F available?
The STM6321RWY6F is available in a standard 5-pin SOT23 package.
