Patent ID: 8281158
Filing Date: 2012-10-02
Classification: G06F,Y02D

Abstract:
1. A semiconductor integrated circuit having an internal circuit group which includes at least one internal circuit, comprising: a plurality of process monitoring circuits, each of which is disposed at a different location in the internal circuit group, each of the process monitoring circuits, which is operated in response to a power supply voltage, detecting monitoring data in the area where one of the process monitoring circuits is disposed; and a power supply voltage generating circuit generating the power supply voltage corresponding to the monitoring data, and supplying the power supply voltage to the internal circuit group; wherein one of the process monitoring circuits includes a comparator circuit, which compares the monitoring data detected by itself in a current stage with the monitoring data in a previous stage of a serial transfer connection created by connecting each of the process monitoring circuits in succession, and wherein the comparator circuit selects and transmits one of the monitoring data, which is higher, to a process monitoring circuit in a next stage of the serial transfer connection.