Overview
The STM809MWX6F is a low-power supervisory device from STMicroelectronics, designed to monitor power supplies and ensure proper system operation. It is part of the STM809/810/811/812 series of microprocessor reset circuits. These devices are crucial for maintaining system integrity by asserting a reset signal when the supply voltage drops below a preset threshold and keeping it asserted until the voltage rises above the threshold for a minimum recovery time.
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 | Push-pull RST output |
| Supply Current | 6 µA (typ) |
| RST Assertion Voltage | Down to VCC = 1.0 V |
| RoHS Compliance Grade | Ecopack3 |
Key Features
- Lead-free and available in small SOT23 package
- Precision monitoring of 3 V, 3.3 V, and 5 V supply voltages
- Guaranteed RST assertion down to VCC = 1.0 V
- Low supply current of 6 µA (typ)
- Push-pull RST output configuration
- 140 ms minimum reset pulse width
- Industrial grade operating temperature range: 40 °C to 85 °C
Applications
The STM809MWX6F is suitable for various applications, including:
- Communications equipment
- Computers and peripherals
- Industrial control systems
Q & A
- What is the primary function of the STM809MWX6F?
The primary function is to monitor the power supply and assert a reset signal if the voltage drops below a preset threshold.
- What are the supported supply voltages for the STM809MWX6F?
The device supports monitoring of 3 V, 3.3 V, and 5 V supply voltages.
- What is the minimum reset pulse width of the STM809MWX6F?
The minimum reset pulse width is 140 ms.
- What is the typical supply current of the STM809MWX6F?
The typical supply current is 6 µA.
- What is the operating temperature range of the STM809MWX6F?
The operating temperature range is from 40 °C to 85 °C (industrial grade).
- Is the STM809MWX6F RoHS compliant?
Yes, the STM809MWX6F is RoHS compliant with an Ecopack3 grade.
- What package type is the STM809MWX6F available in?
The device is available in the SOT23 package.
- Can the STM809MWX6F assert a reset signal at low VCC levels?
Yes, the device can assert a reset signal down to VCC = 1.0 V.
- What are some common applications for the STM809MWX6F?
Common applications include communications equipment, computers and peripherals, and industrial control systems.
- Is the STM809MWX6F lead-free?
Yes, the STM809MWX6F is lead-free.
