Integrated low voltage detect and watchdog circuit

Details Integrated low voltage detect and watchdog circuit Integrated low voltage detect and watchdog circuit

1990-07-20

1992-09-29

Smith, Jerry

Boots, shoes, and leggings

361 92, 371 66, G05B 2302, G06F 1130

Patent

active

051518546

ABSTRACT:
A low voltage monitor and microcontroller output monitoring circuit for insuring proper operation of a microcontroller in a furnace control system. A switch connected to a reset port of the microcontroller is capable of putting either a high or low voltage signal at the reset port. A high signal is required for normal operation of the microcontroller. The low voltage monitor connects to a power supply providing power to the microcontroller and causes the switch to provide a low signal to the reset port if the output voltage of the power supply drops below a predetermined level. The output monitoring circuit insures that the microcontroller is operating properly by insuring that the microcontroller is producing an output signal at a predetermined frequency and repetition rate. If the output signal is not at the predetermined frequency, the output monitoring circuit causes a low voltage to be present at the reset port.

REFERENCES:
patent: 4317056 (1982-02-01), Alberts
patent: 4399537 (1983-08-01), Jones
patent: 4410991 (1983-10-01), Lenart
patent: 4439805 (1984-03-01), Tarleton
patent: 4444551 (1984-04-01), Mueller et al.
patent: 4446499 (1984-05-01), Kishimoto et al.
patent: 4586179 (1986-04-01), Sirazi et al.
patent: 4604046 (1986-08-01), Meuller et al.
patent: 4644266 (1987-02-01), Reuter
patent: 5047987 (1991-09-01), Kosuge

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