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PM25LD512 Datasheet(PDF) 15 Page - List of Unclassifed Manufacturers |
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PM25LD512 Datasheet(HTML) 15 Page - List of Unclassifed Manufacturers |
15 / 33 page Pm25LD512/010/ 020 Confidential information Chingis Technology Corp. 15 DRAFT Date: August, 2010, Rev:0.4 DEVICE OPERATION (CONTINUED) WRITE ENABLE OPERATION The Write Enable (WREN) instruction is used to set the Write Enable Latch (WEL) bit. The WEL bit of the Pm25LD512/010/020 is reset to the write –protected state after power-up. The WEL bit must be write enabled before any write operation, including sector, block erase, chip erase, page program and write status register operations. The WEL bit will be reset to the write-protect state automatically upon completion of a write operation. The WREN instruction is required before any above operation is executed. Figure 6. Write Enable Sequence WRDI COMMAND (WRITE DISABLE) OPERATION The Write Disable (WRDI) instruction resets the WEL bit and disables all write instructions. The WRDI instruction is not required after the execution of a write instruction, since the WEL bit is automatically reset. Figure 7. Write Disable Sequence SIO SIO |
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