Patent ID: 8135968
Filing Date: 2012-03-13
Classification: G06F

Abstract:
1. A semiconductor apparatus including a power management integrated circuit, the semiconductor apparatus comprising: an application processor outputting clock information on an operation clock signal, the application processor comprising a core circuit; and a voltage management integrated circuit receiving the clock information from the application processor, and generating and outputting a core voltage having a voltage level corresponding to the clock information in response to the clock information, wherein the operation clock signal is a clock signal, which has a variable frequency and is input to the core circuit of the application processor, wherein the voltage management integrated circuit comprises: a clock information detection circuit receiving the clock information from the application processor, and generating a multiplexer (MUX) select signal in response to the clock information; and a voltage generating device selecting one of a plurality of voltage levels used by the application processor and generating a voltage having the selected voltage level as the core voltage, in response to the MUX select signal.