Memory mounting judgment circuit

Details Memory mounting judgment circuit Memory mounting judgment circuit

1998-01-19

1999-09-07

Nelms, David

Static information storage and retrieval

Interconnection arrangements

36518911, G11C 506

Patent

active

059497025

ABSTRACT:
A memory mounting judgment circuit can improve reliability in detection whether ROM is mounted or not. In response to a power-ON reset signal, a signal from an output terminal of ROM is stored in a data storage portion. By pulling up a signal line electrically connecting the output terminal of ROM and the data storage portion, the signal line when ROM is not mounted, is fixed at all "1". When ROM is mounted, data read out from ROM is stored in the data storage portion. Depending upon the storage content of the data storage portion, judgment whether ROM is mounted or not, is made.

REFERENCES:
patent: 4660999 (1987-04-01), Tsuneki
patent: 5121483 (1992-06-01), Monahan et al.

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