STM6822RWY6F

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High-performance voltage supervisor with adjustable threshold
• Package: SOT-23-6
• Essence: Voltage monitoring and reset generation
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.8V to 5.5V
• Threshold Voltage Options: Adjustable from 1.2V to 4.6V in 100mV steps
• Reset Timeout Period: Fixed or adjustable using external capacitor
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 3µA typical
• Output Type: Active Low, Open Drain
• Accuracy: ±1.5%
• Power-On Reset Delay: 200ms typical

Detailed Pin Configuration

The STM6822RWY6F is a six-pin device with the following pin configuration:

1. GND: Ground connection
2. VDD: Positive supply voltage input
3. MR: Manual reset input (active low)
4. RESET: Reset output (active low)
5. TH: Threshold voltage selection pin
6. CT: Capacitor connection for reset timeout adjustment

Functional Features

• Monitors the supply voltage and generates a reset signal when it falls below the programmed threshold.
• Provides a manual reset input for immediate system reset.
• Offers adjustable threshold voltage to suit different applications.
• Allows flexibility in setting the reset timeout period using an external capacitor.
• Low quiescent current consumption ensures minimal power usage.

Advantages and Disadvantages

Advantages: - Wide supply voltage range allows compatibility with various systems. - Adjustable threshold voltage provides versatility in different voltage monitoring applications. - Low quiescent current consumption helps conserve power. - Manual reset input allows for immediate system reset when required.

Disadvantages: - Fixed or adjustable reset timeout period may not be suitable for all applications. - Accuracy of ±1.5% may not meet the requirements of highly precise systems.

Working Principles

The STM6822RWY6F is a voltage supervisor IC that continuously monitors the supply voltage. It compares the voltage with the programmed threshold and generates a reset signal when the voltage falls below this threshold. The threshold voltage can be adjusted using the TH pin, allowing customization for specific applications.

The device also features a manual reset input (MR) which, when pulled low, forces an immediate system reset. This can be useful during system testing or fault recovery.

Additionally, the reset timeout period can be fixed or adjusted using an external capacitor connected to the CT pin. This feature enables control over the duration of the reset signal, ensuring proper system initialization.

Detailed Application Field Plans

The STM6822RWY6F is widely used in various electronic systems where reliable voltage monitoring and reset generation are critical. Some application fields include:

1. Microcontrollers and Microprocessors: Ensures proper system initialization by monitoring the supply voltage and generating a reset signal if necessary.
2. Communication Systems: Provides voltage supervision to prevent data corruption or loss during power fluctuations.
3. Industrial Control Systems: Guarantees stable operation by resetting the system when the supply voltage drops below the specified threshold.
4. Automotive Electronics: Monitors the vehicle's electrical system to ensure safe and reliable operation.

Detailed and Complete Alternative Models

1. STM6821RWY6F: Similar to STM6822RWY6F but with fixed threshold voltage options.
2. STM6823RWY6F: Offers additional features such as watchdog timer and power-on reset delay adjustment.
3. STM6824RWY6F: Provides multiple reset outputs for monitoring different voltage levels simultaneously.

These alternative models offer similar functionality with slight variations to cater to specific application requirements.

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