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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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38D2 датащи(PDF) 77 Page - Renesas Technology Corp |
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38D2 датащи(HTML) 77 Page - Renesas Technology Corp |
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77 / 136 page  Rev.3.02 Apr 10, 2008 Page 77 of 131 REJ03B0177-0302 38D2 Group • Block Erase Command (2016/D016) By writing the command code “2016” in the first bus cycle and the confirmation command code “D016” and the block address in the second bus cycle that follows, the block erase (erase and erase verify) operation starts for the block address of the flash memory to be specified. Whether the block erase operation is completed can be confirmed by read status register or the RY/BY status flag of flash memory control register. To read the status register, write the status register command “7016”. The status register bit 7 (SR7) is set to “0” at the same time the block erase operation starts and returned to “1” upon completion of the block erase operation. The read status mode at this time remains active until the read array command (“FF16”) is written. The RY/BY status flag register is set to “0” during block erase operation and “1” when the block erase operation is completed as is the status register bit 7 (SR7). After the block erase ends, erase results can be checked by reading the status register. For details, refer to the section where the status register is detailed. Fig 76. Erase flowchart Write “2016” Write “D016” Block address Read status register SR7 = “1”? or RY/BY = “1”? Erase completed (write read command “FF16”) NO YES Start SR5 = “0”? Erase error YES NO |
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