Initialization of memory in a computer system
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United States of America Patent
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Feb 16, 2021
Grant Date -
Jul 13, 2017
app pub date -
Dec 23, 2016
filing date -
Dec 30, 2015
priority date (Note) -
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Abstract
A computer system, especially but not exclusively an embedded system, is provided with a CPU and an external FLASH or other memory which is used for storing code to be executed by the CPU in operation of the system. The system can be initialized without requiring a secondary boot sequence which means it can be used in preference to embedded or serial FLASH solutions. There is provided a computer system comprising: a processor; an external memory, being external to the processor; a memory controller for the external memory; and a power management unit which is arranged to receive a wake up signal, then to first wake up the memory controller; and secondly at a later time to wake up the processor.
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