Patent ID: 7848169
Filing Date: 2010-12-07
Classification: G06F,G11C,H03L,Y02D

Abstract:
1. A semiconductor device having a plurality of power source blocks including a power source block that can control operating frequencies and operating voltages, the semiconductor device comprising: a first memory circuit being disposed in a first power source block and operating in synchronization with a clock; a second memory circuit being disposed in a second power source block and operating in synchronization with the clock; a first delay circuit being connected between an output terminal of the first memory circuit and an input terminal of the second memory circuit; a second delay circuit being connected between an output terminal of the second memory circuit and an input terminal of the first memory circuit; and a determination circuit determining whether it is a situation that can cause malfunction based on an input signal and an output signal in the first and second memory circuits and outputting a determination result as an error detection signal.