Semiconductor device capable of externally and readily identifyi

Details Semiconductor device capable of externally and readily identifyi Semiconductor device capable of externally and readily identifyi

1997-01-23

1998-06-09

Fears, Terrell W.

Static information storage and retrieval

Read/write circuit

Plural use of terminal

365 52, G11C 1300

Patent

active

057645736

ABSTRACT:
A checking circuit is provided which electrically and selectively connects a pad to which an internal circuit is connected, to a reference potential source node, in accordance with a potential of a special pad, when activated. The checking circuit is activated when a burn-in mode detection signal is activated. By detecting a leak current of a pin terminal to which the pad connected to the circuit is electrically connected, the potential of the special pad, that is, set internal function, can be externally identified. Accordingly, a bonding option function of which internal function is set in accordance with the potential of the bonding pad, can be externally detected in a non-destructive manner.

REFERENCES:
patent: 5471425 (1995-11-01), Yumitori et al.

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