Semiconductor integrated circuit device with built-in arrangemen

Details Semiconductor integrated circuit device with built-in arrangemen Semiconductor integrated circuit device with built-in arrangemen

1988-10-04

1990-02-27

Zache, Raulfe B.

Boots, shoes, and leggings

3642328, 3642592, 364265, 3642653, 371 212, G06F 1200, G11C 2900

Patent

active

049051423

ABSTRACT:
A semiconductor integrated circuit device which inhibits the output of programmed data of its built-in memory to external terminals but outputs the result of a comparison of the programmed data with an input signal supplied from a first external terminal to a second external terminal.

REFERENCES:
patent: 4752914 (1988-06-01), Nakano et al.
patent: 4777586 (1988-10-01), Matsubara et al.
Letham, L. et al., "Software Security is Provided by an EPROM that Performs an Authentication Handshake," Fourth Annual International Conference, Proceedings on Computers and Communications, Mar. 20-22, 1985, pp. 122-126.

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