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Method and apparatus for booting a microprocessor system using boot code stored on a serial flash memory array having a random-access interface
Method and apparatus for booting a microprocessor system using boot code stored on a serial flash memory array having a random-access interface
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机译:用于使用存储在具有随机访问接口的串行闪存阵列上的启动代码来启动微处理器系统的方法和装置
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摘要
A method and apparatus for booting a microprocessor system using a serial (e.g., NAND-type) flash memory array having a random-access (parallel, e.g., NOR-flash type) interface. The method includes loading a boot code loader stored in the serial (e.g., NAND-type) flash memory array into a RAM when power is turned on, according to a routine of a read-only memory (ROM) of the microprocessor; loading boot code stored in the serial flash memory into an internal or external (main) RAM of the microprocessor according to the boot code loader; loading application code stored in the serial flash memory into the main (RAM) memory according to the boot code; and executing the application code. The system may be manufactured at a low cost compared to NOR-Flash based systems, while ensuring flexibility of a microprocessor.
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