STM810MWX6F

Product Overview

• Category: Integrated Circuit (IC)
• Use: Reset Supervisor
• Characteristics:
  • Monitors the power supply voltage of a microcontroller or other digital systems
  • Generates a reset signal when the voltage drops below a specified threshold
  • Prevents erratic behavior or data corruption during power-up and power-down sequences
• Package: SOT-23-6
• Essence: Ensures reliable system operation by monitoring and controlling the power supply voltage
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.2V to 5.5V
• Threshold Voltage Options: 2.63V, 2.93V, 3.08V, 4.38V
• Reset Timeout Period: 140ms, 560ms, 1120ms, 2240ms
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The STM810MWX6F has six pins arranged as follows:

```

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| | --| RST | --| GND | --| VCC | --| MR | --| RESET | |_______| ```

• RST: Output pin for the reset signal
• GND: Ground reference
• VCC: Power supply input
• MR: Manual reset input (active-low)
• RESET: Open-drain output that indicates the reset condition

Functional Features

• Monitors the power supply voltage continuously
• Generates a reset signal when the voltage falls below the specified threshold
• Provides a manual reset option through the MR pin
• Offers an open-drain RESET pin for external monitoring
• Includes a built-in power-on reset delay to ensure stable operation during power-up

Advantages and Disadvantages

Advantages: - Ensures reliable system operation by preventing erratic behavior during power fluctuations - Wide supply voltage range allows compatibility with various microcontrollers and digital systems - Multiple threshold voltage options provide flexibility for different applications - Manual reset option allows for system control in specific scenarios

Disadvantages: - Limited reset timeout period options may not suit all application requirements - SOT-23-6 package may be challenging to solder for inexperienced users

Working Principles

The STM810MWX6F operates by continuously monitoring the power supply voltage. When the voltage drops below the specified threshold, it triggers the generation of a reset signal. This signal is then sent to the microcontroller or digital system, initiating a reset sequence. The device also includes a manual reset input (MR) that allows the user to force a reset when required.

During power-up, the STM810MWX6F incorporates a built-in power-on reset delay. This delay ensures that the reset signal is not generated immediately after power is applied, allowing the system to stabilize before normal operation begins.

Detailed Application Field Plans

The STM810MWX6F is commonly used in various electronic systems where reliable power supply monitoring and reset functionality are crucial. Some application fields include:

1. Microcontroller-based Systems: Used to monitor the power supply voltage of microcontrollers, ensuring proper initialization and preventing data corruption during power-up and power-down sequences.
2. Industrial Control Systems: Provides reset supervision for industrial automation equipment, preventing malfunctions caused by power fluctuations.
3. Automotive Electronics: Monitors the power supply voltage in automotive electronic systems, ensuring stable operation and preventing damage due to voltage drops.
4. Medical Devices: Used to supervise the power supply voltage in medical equipment, ensuring patient safety and preventing data loss during power interruptions.

Detailed and Complete Alternative Models

1. STM810LX6F: Similar to STM810MWX6F, but with a different package (SOT-23-5) and slightly different specifications.
2. MAX809: Reset supervisor IC from Maxim Integrated, offering similar functionality with various package options.
3. TPS3808: Texas Instruments' reset supervisor IC with adjustable threshold voltage and timeout period options.

These alternative models provide similar features and can be considered based on specific application requirements.

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