Renewable Energy Grade featured reset circuit(Solar Magic 5-pin microprocessor)

SM72240 – Solar Magic 5-Pin microprocessor Reset Circuit Features Renewable Energy Grade Precise monitoring of 5V supply voltages Fully specified over temperature −40°C to +125°C 100 ms minimum Power-On Reset pulse width, 190 ms typical: Active-Low ^RESET Open Drain Output Guaranteed ^RESET Output valid for VCC ≥ 1V Low Supply Current, 6µA typical Power supply transient…

Features

• Renewable Energy Grade
• Precise monitoring of 5V supply voltages
• Fully specified over temperature
• −40°C to +125°C
• 100 ms minimum Power-On Reset pulse width, 190 ms typical:
• Active-Low ^RESET Open Drain Output
• Guaranteed ^RESET Output valid for VCC ≥ 1V
• Low Supply Current, 6µA typical
• Power supply transient immunity
• Compatible with MAX811/812 applications

Descriptions

The SM72240 microprocessor supervisory circuit monitors the power supplies in microprocessor and digital systems. It provides a reset to the microprocessor during power-up, power-down, brown-out conditions, and manual reset.

The SM72240 asserts a reset signalwhenever the supply decreases below the factory-programmed reset threshold. Reset will be asserted for at least 100ms even after VCC rises above the reset threshold.

The SM72240 has an active-low open-drain ^RESET output.

The SM72240 is suitable for monitoring 5V. With a low supply current of only 6µA, the SM72240 is ideal for use in portable equipment. The SM72240 is available in the 5-pin SOT23 package.

Applications

• Microprocessor Systems
• Computers
• Intelligent Instruments
• Portable/Battery-Powered Equipment

• Controllers
  

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