Integrated circuit with function of monitoring an internal signa

Details Integrated circuit with function of monitoring an internal signa Integrated circuit with function of monitoring an internal signa

1985-09-10

1989-02-21

Moffitt, James W.

Static information storage and retrieval

Read/write circuit

Data refresh

365189, G11C 700

Patent

active

048071978

ABSTRACT:
An improved semiconductor integrated circuit having a circuit for monitoring an internal signal which is not taken out from a chip is disclosed. The monitoring circuit includes a transistor having a control electrode to which the internal signal is applied, and a voltage switching element connected in series with the transistor between two external terminals. The voltage switching element is rendered conductive when a voltage of a predetermined value or more is impressed between the two external terminals.

REFERENCES:
patent: 4334295 (1982-06-01), Nagami
patent: 4480321 (1984-10-01), Aoyama

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