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FM811

Part Number	FM811
Manufacturer	Fairchild Semiconductor
Description	Microprocessor Reset Circuits
Published	Mar 30, 2005
Detailed Description	www.fairchildsemi.com FM811/812 Microprocessor Reset Circuits Features • Feature • Precision Voltage Monitor for 3V, 3....
Datasheet	FM811 PDF File

Overview

www.
fairchildsemi.
com FM811/812 Microprocessor Reset Circuits Features • Feature • Precision Voltage Monitor for 3V, 3.
3V or 5V Power Supplies • 6µA Supply Current • 140ms Minimum Reset Pulse Width • RESET Remains Valid with VCC as Low as 1.
4V • Active Low Manual Reset Input • No External Components • 4-Pin SOT-143 Package Description The FM811/FM812 is a low cost microprocessor supervisory circuit that asserts a reset if the power supply drops below a designated threshold or the manual reset pin is forced low.
Several different reset thresholds are available to accommodate systems operating at 3V, 3.
3V or 5V.
Preliminary Information Applications • • • • • Critical Microprocessor Power Monitoring Portable Equipment Intelligent Instruments Computers & Printers Controllers The FM811 has an active low RESET output, while the FM812 offers an active high RESET output.
The reset output is guaranteed to remain asserted for a minimum of 140ms after VCC has risen above the designated reset...

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