Ultra Low Power Reset Generator

Abstract: This application note describes an ultra-low power microprocessor reset generator that is capable of operating for decades from a single AA Lithium cell. Where continuous intermittent reset is desired, this relaxation-oscillator circuit can provide adjustable pulse width and reset period. Typical operation producing 100µs pulses each second requires only 1µA current from a 1.8-5.5V supply. Formulas are provided for calculation of component values for a wide range of pulse width and period.
Maxim > App Notes > AMPLIFIER AND COMPARATOR CIRCUITS

Keywords: microprocessor reset generator, ultra-low power, relaxation oscillator, long battery life, pulse Sep 06, 2002
generator

APPLICATION NOTE 1186
Ultra Low Power Reset
Generator

Abstract: This application note describes an ultra-low power microprocessor reset generator that is capable of
operating for decades from a single AA Lithium cell. Where continuous intermittent reset is desired, this
relaxation-oscillator circuit can provide adjustable pulse width and reset period. Typical operation producing
100s pulses each second requires only 1A current from a 1.8-5.5V supply. Formulas are provided for
calculation of component values for a wide range of pulse width and period.


When a processor-controlled device must be guarantee