Overview
The STM809RWX6F is a low-power supervisory device from STMicroelectronics, designed to monitor power supplies and ensure proper system operation. It belongs to the STM809/810/811/812 family of microprocessor reset circuits. These devices are crucial in asserting a reset signal when the supply voltage drops below a preset threshold and maintaining this signal until the voltage rises above the threshold for a specified period.
Key Specifications
| Parameter | Value |
|---|---|
| Package | SOT23 |
| Operating Temperature | 40 °C to 85 °C (industrial grade) |
| Supply Voltage Monitoring | 3 V, 3.3 V, and 5 V |
| Reset Pulse Width | 140 ms (min) |
| Output Configuration | Active-low push-pull output |
| Supply Current | 6 µA (typ) |
| RST Assertion | Guaranteed down to VCC = 1.0 V |
| RoHS Compliance | Ecopack3 |
Key Features
- Lead-free and small SOT23 package
- Precision monitoring of 3 V, 3.3 V, and 5 V supply voltages
- 140 ms minimum reset pulse width
- Active-low push-pull output configuration
- Low supply current of 6 µA (typical)
- Guaranteed RST assertion down to VCC = 1.0 V
- Push-button reset input (for STM811/812 models)
Applications
The STM809RWX6F is suitable for various applications, including:
- Communications equipment
- Computers and peripherals
- Industrial control systems
Q & A
- What is the primary function of the STM809RWX6F? The primary function is to monitor power supplies and assert a reset signal when the supply voltage drops below a preset threshold.
- What are the supported supply voltages for the STM809RWX6F? The device supports precision monitoring of 3 V, 3.3 V, and 5 V supply voltages.
- What is the minimum reset pulse width of the STM809RWX6F? The minimum reset pulse width is 140 ms.
- What is the typical supply current of the STM809RWX6F? The typical supply current is 6 µA.
- What is the operating temperature range of the STM809RWX6F? The operating temperature range is from 40 °C to 85 °C (industrial grade).
- Is the STM809RWX6F RoHS compliant? Yes, it is RoHS compliant with an Ecopack3 rating.
- What type of output configuration does the STM809RWX6F have? The device has an active-low push-pull output configuration.
- Does the STM809RWX6F have a push-button reset input? No, the STM809RWX6F does not have a push-button reset input; this feature is available in the STM811/812 models.
- What package type is the STM809RWX6F available in? The STM809RWX6F is available in a SOT23 package.
- What are some common applications for the STM809RWX6F? Common applications include communications equipment, computers and peripherals, and industrial control systems.
