发明名称 |
Flash memory controller with updateable microcode |
摘要 |
A flash memory controller with a volatile program and data memory is disclosed. The controller loads microcode and data into the program and data memory from a flash memory array upon powerup of the controller. If an error occurs during the download or the microcode does not exist in the flash memory array, then the controller loads microcode and data into the program and data memory from the host computer. In some embodiments of the invention, an initial code is downloaded to the controller so that an evaluation of the configuration of the controller and the flash memory can be communicated to a host computer. The host computer then downloads for storage into the flash memory a tailored microcode and restarts the controller so that the tailored microcode is loaded from the flash memory and executed. In some embodiments, a protection circuit is provided to protect the microcode from accidentally being erased from the flash memory. Additionally, in some embodiments, an interleaved data structure is utilized to minimize wait times during read and write operations to the flash memory.
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申请公布号 |
US6754765(B1) |
申请公布日期 |
2004.06.22 |
申请号 |
US20010855919 |
申请日期 |
2001.05.14 |
申请人 |
INTEGRATED MEMORY LOGIC, INC. |
发明人 |
CHANG CHAO-I;ZHANG JI YUN |
分类号 |
G06F9/445;G06F12/00;(IPC1-7):G06F12/00 |
主分类号 |
G06F9/445 |
代理机构 |
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地址 |
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