Semiconductor integrated circuit

Details Semiconductor integrated circuit Semiconductor integrated circuit

2007-12-11

2007-12-11

Dinh, Son (Department: 2824)

Static information storage and retrieval

Read/write circuit

C365S189050, C365S230050

Reexamination Certificate

active

11359363

ABSTRACT:
A function switching part has a pair of programming elements programmed to different logic values. A decision circuit in the function switching part outputs a logic level according to a difference between the currents flowing in the programming elements, while the power supply voltage rises at the power-on. The operating specification of an option functional part is switched according to the logic level output from the decision circuit. That is, the operating specification of the option functional part is automatically decided according to the program state of the programming element before the power-on operation is completed. The read operation for the programming element need not be performed for deciding the operating specification of the option functional part. Since the initial process after the power-on period is simplified, the period from when the power is turned on to when the normal operation begins can be shortened.

REFERENCES:
patent: 5717638 (1998-02-01), Kim
patent: 6958948 (2005-10-01), Shiraishi
patent: 04-095184 (1992-03-01), None
patent: 06-187468 (1994-07-01), None
patent: 06-231587 (1994-08-01), None

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