The MIC812TU is a microprocessor supervisory circuit manufactured by Micrel (now Microchip Technology). It is designed to monitor the voltage level of a microprocessor's power supply and provide a reset signal when the voltage drops below a specified threshold. This ensures that the microprocessor starts up and operates correctly, preventing data corruption or system malfunction.

Applications

• Microprocessor Reset Control
• Voltage Monitoring
• Power-On Reset (POR)
• Brown-Out Protection
• Battery-Powered Systems

Features

• Precision Voltage Monitoring
• Active-Low Reset Output
• Open-Drain Reset Output
• Internal Reset Timeout Delay
• Small Package (SOT-23)

Benefits

• Reliable Reset: Ensures proper microprocessor startup and operation.
• Prevents Data Corruption: Protects against data loss due to voltage drops.
• Simplified System Design: Integrated functionality reduces the need for external components.
• Space-Saving: Small SOT-23 package allows for compact circuit designs.
• Cost-Effective: Provides essential system protection at a low cost.

Additional Details

The MIC812TU features a precise voltage threshold for detecting undervoltage conditions. When the monitored voltage falls below the threshold, the MIC812TU asserts a reset signal, holding the microprocessor in a reset state. The internal reset timeout delay ensures that the reset signal remains asserted for a sufficient time after the voltage returns to the acceptable range. The open-drain reset output allows for flexible connection to various microprocessor reset inputs. The device operates over a wide temperature range, making it suitable for industrial and automotive applications. The specific voltage threshold is determined by the part number suffix.