STM690SM6E

Product Overview

• Category: Integrated Circuit
• Use: Voltage Supervisor
• Characteristics: High accuracy, low power consumption, small package size
• Package: SOT-23-6
• Essence: Monolithic voltage supervisor with a built-in watchdog timer
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.8V to 5.5V
• Threshold Voltage Options: 2.93V, 3.08V, 3.15V, 4.38V, 4.63V, 4.75V
• Reset Timeout Period: Adjustable from 1.6ms to 640ms
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The STM690SM6E is a six-pin device with the following pin configuration:

1. GND (Ground)
2. MR (Master Reset)
3. VCC (Supply Voltage)
4. RESET (Reset Output)
5. WDI (Watchdog Input)
6. NC (No Connection)

Functional Features

• Monitors supply voltage and asserts reset when it falls below the threshold
• Built-in watchdog timer for system monitoring and recovery
• Adjustable reset timeout period for flexibility in different applications
• Low quiescent current consumption for power-sensitive designs
• Active-low reset output signal for interfacing with other devices

Advantages and Disadvantages

Advantages

• High accuracy in voltage monitoring ensures reliable system operation
• Small package size allows for space-constrained designs
• Wide supply voltage range enables compatibility with various systems
• Adjustable reset timeout period accommodates different application requirements
• Low power consumption prolongs battery life in portable devices

Disadvantages

• Limited number of threshold voltage options may not suit all applications
• Lack of additional features compared to more advanced voltage supervisors

Working Principles

The STM690SM6E operates by continuously monitoring the supply voltage and comparing it with the set threshold voltage. When the supply voltage falls below the threshold, the device asserts the reset signal, indicating a power failure or an out-of-specification condition. The built-in watchdog timer ensures system integrity by periodically receiving a signal from the WDI pin. If this signal is not received within the specified timeout period, the device triggers a system reset.

Detailed Application Field Plans

The STM690SM6E finds applications in various fields where reliable voltage monitoring and system recovery are crucial. Some potential application areas include:

1. Industrial Control Systems: Ensuring uninterrupted operation of critical machinery and equipment.
2. Automotive Electronics: Monitoring vehicle power supply to prevent malfunctions and ensure passenger safety.
3. Medical Devices: Providing reliable voltage supervision for life-saving medical equipment.
4. Consumer Electronics: Protecting sensitive electronic components from voltage fluctuations.
5. Internet of Things (IoT): Enabling efficient power management in IoT devices.

Detailed and Complete Alternative Models

• STM690AM6E: Similar specifications but with different threshold voltage options.
• STM691SM6E: Enhanced version with additional features such as power-on reset delay and manual reset input.

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