Patent ID: 8817565
Filing Date: 2014-08-26
Classification: G01K,H02J

Abstract:
1. A microprocessor system comprising: a microprocessor that controls the operation of the system; a memory module capable of communication with the microprocessor; a display capable of communication with the microprocessor; wherein the memory module comprises at least one memory array comprising a plurality of memory cells; a memory controller circuit coupled to the memory array for generating refresh signals at a refresh rate determined by a temperature signal; and a temperature sensing device, coupled to the memory controller, for generating the temperature signal, the device comprising: a temperature variant oscillator that generates a variable rate signal having a frequency that varies in response to a temperature of the DRAM; a temperature invariant oscillator that generates a fixed rate signal indicating a sense cycle; and a counter that generates the temperature signal as an n-bit count in response to the variable rate signal and the fixed rate signal.