Control system with microcomputer and associated electrically re

Pulse or digital communications – Repeaters – Testing

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395557, G06F 900

Patent

active

058929428

ABSTRACT:
A control system adaptable for use in controlling internal combustion engines has a microcomputer and a hardware circuit reconfigurable in internal logic circuitry in such a manner that the setting of configuration is completed before the microcomputer is rendered operative upon application of a power supply voltage. The microcomputer is assembled in a 4-V guarantee circuit block with its operating guarantee power supply voltage of 4 volts. A 3-V guarantee block includes a random logic circuit and an EEPROM for storage of circuit configuration set data. The 3-V guarantee block also includes a first power-on reset circuit for providing respective sections with a reset-release command signal when an applied power supply voltage potentially rises at 3 volts, and a second power-on reset circuit for forcing the random logic circuit in the reset state until completion of the reconfiguration of the hardware circuit.

REFERENCES:
patent: 4788661 (1988-11-01), Morita
patent: 5297287 (1994-03-01), Mikayama et al.
patent: 5513358 (1996-04-01), Lundberg et al.
patent: 5535409 (1996-07-01), Larvoire et al.
patent: 5696979 (1997-12-01), Saitou

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