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M58BW016DB Datasheet(PDF) 36 Page - STMicroelectronics |
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M58BW016DB Datasheet(HTML) 36 Page - STMicroelectronics |
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36 / 69 page  Status Register M58BW016DT, M58BW016DB, M58BW016FT, M58BW016FB 36/69 5.6 Program Suspend Status (bit 2) The Program Suspend Status bit indicates that a Program operation has been suspended and is waiting to be resumed. The Program Suspend Status should only be considered valid when the Program/Erase Controller Status bit is set to ‘1’ (Program/Erase controller inactive); after a Program/Erase Suspend command is issued the memory may still complete the operation rather than entering the Suspend mode. When the Program Suspend Status bit is set to ‘0’, the Program/Erase controller is active or has completed its operation; when the bit is set to ‘1’, a Program/Erase Suspend command has been issued and the memory is waiting for a Program/Erase Resume command. When a Program/Erase Resume command is issued the Program Suspend Status bit returns to ‘0’. 5.7 Block Protection Status (bit 1) The Block Protection Status bit can be used to identify if a program or erase operation has tried to modify the contents of a protected block. When the Block Protection Status bit is set to ‘0’, no program or erase operations have been attempted to protected blocks since the last Clear Status Register command or hardware reset; when the Block Protection Status bit is set to ‘1’, a program or erase operation has been attempted on a protected block. Once set to ‘1’, the Block Protection Status bit can only be reset Low by a Clear Status Register command or a hardware reset. If set to ‘1’ it should be reset before a new Program or Erase command is issued, otherwise the new command will appear to fail. All others bits are reserved. Table 11. Status Register bits Bit Name Logic level Definition 7 Program/Erase Controller Status ’1’ Ready ’0’ Busy 6 Erase Suspend Status ’1’ Suspended ’0’ In progress or completed 5Erase Status ’1’ Erase error ’0’ Erase success 4 Program Status, ’1’ Program error ’0’ Program success 3VPP Status ’1’ VPP invalid, abort ’0’ VPP OK 2 Program Suspend Status ’1’ Suspended ’0’ In progress or completed 1 Erase/Program in a protected block ’1’ Program/erase on protected block, abort ’0’ No operations to protected sectors Other bits reserved |
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