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CHAPTER 19 512 KBIT FLASH MEMORY
I Notes on Command Issuance
Pay attention to the following points when issuing commands in the command sequence table:
• Write-enable each required sector before issuing the first command.
• The upper address "U" bits (bits 15 to 12) used when commands are issued must have the
same value as RA, PA, and SA, from the first command on.
If these instructions are not followed, commands are not recognized normally, requiring that the
command sequencer in the flash memory be initialized by a reset.
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