STM809MWX6F - Microprocessor Reset Circuit

The STM809MWX6F from STMicroelectronics is a highly reliable, precision microprocessor (µP) reset circuit device designed to monitor the supply voltage of microprocessor (µP) and digital systems. It provides a significant layer of protection to your system by ensuring that the µP resets properly during power-up, power-down, and brown-out conditions.

Key Features

• Reset Threshold Levels: The device offers an assortment of factory-programmed reset threshold levels suitable for 3V and 5V powered circuits, allowing designers to select the appropriate level for their system requirements.
• Low Power Consumption: With its low supply current of 3 µA, it is ideal for power-conscious applications, contributing to overall system power efficiency.
• Reset Output: The STM809MWX6F provides an active-low reset output, which remains asserted for a minimum of 140 ms after VCC has risen above the reset threshold level, ensuring proper system reset.
• Temperature Range: It operates over a wide temperature range of -40°C to +85°C, making it suitable for industrial applications that may experience extreme conditions.
• Package: The device comes in a compact SOT-23 package, which is ideal for space-constrained applications.

Applications

The STM809MWX6F is versatile and can be used in various applications including:

• Computers and controllers
• Embedded systems
• Portable and battery-powered equipment
• Intelligent instruments
• Industrial equipment

Advantages

The integration of the STM809MWX6F reset circuit in your system design offers several advantages. It enhances system reliability by preventing firmware corruption during unstable power conditions. The precision of the factory-programmed reset thresholds ensures accurate monitoring of the supply voltage, which is critical for the proper functioning of microprocessors and digital systems. Furthermore, its low power consumption and small package size make it an excellent choice for portable and space-constrained applications.