STMicroelectronics
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STM811SW16F
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STM811SW16F

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Reset Generator
  • Characteristics: Low-power, voltage monitor, manual reset input, watchdog timer, adjustable reset threshold
  • Package: SOT-23-5
  • Essence: Provides reliable power-on reset generation for microcontrollers and other digital systems.
  • Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

  • Supply Voltage Range: 1.2V to 5.5V
  • Reset Threshold Voltage Options: 2.63V, 2.93V, 3.08V, 4.38V
  • Manual Reset Input: Active-Low or Active-High
  • Watchdog Timer: Programmable timeout period (1.6s, 3.2s, 6.4s, 12.8s)
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The STM811SW16F has a total of 5 pins:

  1. VDD: Supply Voltage Input
  2. GND: Ground
  3. MR: Manual Reset Input
  4. RESET: Reset Output
  5. WDI: Watchdog Timer Input

Functional Features

  • Monitors the supply voltage and generates a reset signal when it falls below the specified threshold.
  • Allows manual reset through the MR pin.
  • Includes a watchdog timer that resets the system if it fails to toggle the WDI pin within the programmed timeout period.
  • Adjustable reset threshold voltage options provide flexibility for different applications.

Advantages and Disadvantages

Advantages: - Low-power consumption - Small package size - Wide operating voltage range - Adjustable reset threshold - Manual reset capability - Built-in watchdog timer

Disadvantages: - Limited number of reset threshold voltage options - SOT-23-5 package may require additional space on the PCB

Working Principles

The STM811SW16F monitors the supply voltage using an internal voltage comparator. When the voltage falls below the programmed threshold, the reset output is asserted, indicating a power-on reset condition. The manual reset input allows the system to be reset externally. The watchdog timer ensures system integrity by monitoring the WDI pin for toggling within the programmed timeout period. If the WDI signal remains static, the watchdog timer generates a reset signal.

Detailed Application Field Plans

The STM811SW16F is commonly used in various applications, including:

  1. Microcontroller-based systems
  2. Industrial automation
  3. Consumer electronics
  4. Medical devices
  5. Automotive electronics

Detailed and Complete Alternative Models

  1. MAX811: Similar functionality, available in different package options.
  2. TPS3808: Offers additional features like power-on reset delay and adjustable watchdog timeout.
  3. ADM803: Low-power alternative with fixed reset threshold voltage options.

Note: This list is not exhaustive, and there are several other alternatives available in the market.

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Liste 10 almindelige spørgsmål og svar relateret til anvendelsen af STM811SW16F i tekniske løsninger

Sure! Here are 10 common questions and answers related to the application of STM811SW16F in technical solutions:

  1. Q: What is STM811SW16F? A: STM811SW16F is a voltage supervisor and reset IC manufactured by STMicroelectronics.

  2. Q: What is the purpose of STM811SW16F? A: The purpose of STM811SW16F is to monitor the power supply voltage and generate a reset signal when the voltage falls below a specified threshold.

  3. Q: What are the key features of STM811SW16F? A: Some key features of STM811SW16F include adjustable reset threshold, watchdog timer, manual reset input, and low power consumption.

  4. Q: How can STM811SW16F be used in technical solutions? A: STM811SW16F can be used in various applications such as microcontrollers, DSPs, FPGAs, and other digital systems that require reliable power-on reset generation.

  5. Q: What is the operating voltage range of STM811SW16F? A: The operating voltage range of STM811SW16F is typically between 1.6V and 5.5V.

  6. Q: Can the reset threshold of STM811SW16F be adjusted? A: Yes, the reset threshold of STM811SW16F can be adjusted using external resistors.

  7. Q: Does STM811SW16F have a watchdog timer feature? A: Yes, STM811SW16F has an integrated watchdog timer that can be used to monitor the system's operation and generate a reset if necessary.

  8. Q: Is STM811SW16F available in different package options? A: Yes, STM811SW16F is available in different package options such as SOT-23, SO-8, and TSSOP-16.

  9. Q: What is the typical power consumption of STM811SW16F? A: The typical power consumption of STM811SW16F is very low, typically around 5µA.

  10. Q: Can STM811SW16F be used in battery-powered applications? A: Yes, due to its low power consumption, STM811SW16F is suitable for battery-powered applications where power efficiency is crucial.

Please note that these answers are general and may vary depending on the specific application and requirements.