发明名称 |
SCHALTUNGSANORDNUNG ZUR IDENTIFIKATION INTEGRIERTER HALBLEITERSCHALTKREISE. |
摘要 |
A circuit configuration for the identification of integrated semiconductor circuitries includes n programmable elements. A common line is connected to the programmable elements. An n-stage serial-parallel shift register has a data input, n parallel outputs, and a clock input for controlling a shift function of the serial-parallel shift register as a function of a clock signal to be applied to the clock input. Transistors each have a drain connected to a respective one of the programmable elements, a source connected to a supply potential, and a gate connected to a respective one of the parallel outputs of the serial-parallel shift register. Instead of n-stage serial-parallel shift register, it is also possible to use a clocked n-stage oscillator, such as a ring oscillator, or an n-stage counter, such as ring counter. |
申请公布号 |
AT84637(T) |
申请公布日期 |
1993.01.15 |
申请号 |
AT19890111870T |
申请日期 |
1989.06.29 |
申请人 |
SIEMENS AKTIENGESELLSCHAFT |
发明人 |
PRIBYL, WOLFGANG, DR.;SITTIG, RAYMOND, MS EE |
分类号 |
H01L21/02;H01L21/66;H01L23/525;H01L23/544;H01L27/12;(IPC1-7):H01L23/544 |
主分类号 |
H01L21/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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