STM809SWX6F

Product Overview

• Category: Integrated Circuit (IC)
• Use: Reset Generator
• Characteristics: Low-power, voltage monitor with manual reset input
• Package: SOT-23-3
• Essence: Provides a reliable reset signal to microcontrollers and other digital systems
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 2.63V to 5.5V
• Reset Threshold Voltage Options: 2.93V, 3.08V, 3.15V, 4.38V, 4.63V, 4.75V
• Manual Reset Input: Active-low, push-pull output
• Reset Timeout Period: 140ms (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The STM809SWX6F has three pins:

1. VDD - Supply voltage pin
2. GND - Ground pin
3. MR - Manual reset input pin

Functional Features

• Monitors the supply voltage and generates a reset signal when it falls below the specified threshold.
• The manual reset input allows for an external reset signal to override the internal monitoring circuit.
• Provides a debounced reset output to ensure a clean and reliable reset signal to the system.

Advantages and Disadvantages

Advantages

• Low-power consumption, suitable for battery-powered applications.
• Wide supply voltage range allows for compatibility with various systems.
• Small package size enables space-saving designs.
• Debounced reset output ensures reliable system reset.

Disadvantages

• Limited reset threshold voltage options may not meet the requirements of all applications.
• Lack of adjustable timeout period may not be suitable for systems with specific timing requirements.

Working Principles

The STM809SWX6F operates by continuously monitoring the supply voltage. When the voltage falls below the specified threshold, the internal reset circuit is triggered, generating a reset signal. This signal remains active until the supply voltage rises above the threshold or a manual reset input is received.

Detailed Application Field Plans

The STM809SWX6F is commonly used in various applications where a reliable reset signal is required to ensure proper system operation. Some of the typical application fields include:

1. Microcontroller-based systems
2. Embedded systems
3. Industrial control systems
4. Automotive electronics
5. Consumer electronics

Detailed and Complete Alternative Models

• MAX809: Similar low-power voltage monitor IC with adjustable reset threshold voltage options.
• TC54: Voltage supervisor IC with adjustable timeout period and multiple reset output options.
• MCP101: Reset generator IC with additional power-on reset functionality.

These alternative models offer different features and specifications, providing flexibility for various application requirements.

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