Semiconductor device having supply voltage converting circuits

Details Semiconductor device having supply voltage converting circuits Semiconductor device having supply voltage converting circuits

1991-04-01

1997-02-11

Zarabian, A.

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327535, G11C 700

Patent

active

056027923

ABSTRACT:
A semiconductor device of the present invention includes an internal circuit within the voltage is pulled down, and two voltage converting circuits for pulling down the external supply voltage. One of the voltage converting circuits supplies a pulled-down voltage to the internal circuit during the normal operation, while the other of the voltage converting circuits operates under a signal from a control circuit, which monitors the voltage level at an external terminal, so as to supply the voltage pulled down from the voltage at the external terminal to the internal circuit. A reliability test, such as burn-in, may be conducted by simply supplying a higher voltage to the external terminal.

REFERENCES:
patent: 4482985 (1984-11-01), Itoh
patent: 4585955 (1986-04-01), Uchida
patent: 4683382 (1987-07-01), Sakurai
patent: 4780854 (1988-10-01), Watanabe
patent: 4964084 (1990-10-01), Jung
patent: 4983905 (1991-01-01), Sano
patent: 5021728 (1991-06-01), Sato
patent: 5023476 (1991-06-01), Watanabe
patent: 5046052 (1991-09-01), Miyaji
patent: 5083078 (1992-01-01), Kubler
patent: 5121007 (1992-06-01), Aizaki

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