| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress a redundant circuit configuration when detecting a failure of a decoder. Ž<P>SOLUTION: An information processing apparatus contains a memory section (20) having a plurality of word lines, and a decoder (30) for forming a selection signal to select the word lines by decoding an address signal, and the decoder contains a first selector circuit (11), a first decoder circuit (12_0), a second decoder circuit (12_1), and a comparator circuit (13). The comparator forms a failure signal for enabling failure determination of a decoding function of the decoder by comparing a pair of bit signals asserted by the decoder circuit. According to the configuration, a plurality of the same configuration circuits of the decoder and memory section are mounted for examining conformance and nonconformance of the result, resulting in significant reduction of the redundancy of the decoder comparing with technology for detecting a malfunction. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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