SM72240
www.ti.com SNIS154C – JANUARY 2011 – REVISED APRIL 2013 SM72240 SolarMagic 5-Pin Microprocessor Reset Circuit
Check for Samples: SM72240 FEATURES DESCRIPTION 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. 1 2 Renewable Energy Grade
Precise monitoring of 5V supply voltages
Fully specified over temperature
–
-40В°C to +125В°C
100 ms minimum Power-On Reset pulse width,
190 ms typical:
–
Active-Low RESET Open Drain Output
RESET Output valid for VCC ≥ 1V
Low Supply Current, 6ВµA typical
Power supply transient immunity
Compatible with MAX811/812 applications APPLICATIONS Microprocessor Systems
Computers
Controllers
Intelligent Instruments
Portable/Battery-Powered Equipment The SM72240 asserts a reset signal whenever the …