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M58WT032KB Datasheet(PDF) 24 Page - Numonyx B.V |
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M58WT032KB Datasheet(HTML) 24 Page - Numonyx B.V |
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24 / 117 page  Command interface - standard commands M58WTxxxKT, M58WTxxxKB 24/117 5.8 Program/Erase Suspend command The Program/Erase Suspend command pauses a program or block erase operation. One bus write cycle is required to issue the Program/Erase Suspend command. Once the Program/Erase Controller has paused bits SR7, SR6 and/ or SR2 of the Status Register are set to ‘1’. The command can be addressed to any bank. During program/erase suspend the command interface accepts the Program/Erase Resume, Read Array (cannot read the erase-suspended block or the program-suspended word), Read Status Register, Read Electronic Signature, Clear Status Register, and Read CFI Query commands. In addition, if the suspended operation is erase then the Set Configuration Register, Program, Block Lock, Block Lock-Down or Block Unlock commands are also accepted. The block being erased may be protected by issuing the Block Lock, or Block Lock-Down commands. Only the blocks not being erased may be read or programmed correctly. When the Program/Erase Resume command is issued the operation completes. Refer to Section 10 for detailed information about simultaneous operations allowed during Program/Erase Suspend. During a program/erase suspend, the device is placed in standby mode by taking Chip Enable to VIH. Program/erase is aborted if Reset turns to VIL. See Appendix C, Figure 23: Program suspend and resume flowchart and pseudo code, and Figure 25: Erase suspend and resume flowchart and pseudo code for flowcharts for using the Program/Erase Suspend command. 5.9 Program/Erase Resume command The Program/Erase Resume command restarts the Program/Erase Controller after a Program/Erase Suspend command has paused it. One bus write cycle is required to issue the command. The command can be written to any address. The Program/Erase Resume command does not change the read mode of the banks. If the suspended bank is in read Status Register, read electronic signature or read CFI query mode the bank remains in that mode and outputs the corresponding data. If the bank is in read array mode, subsequent read operations output invalid data. If a Program command is issued during a block erase suspend, the erase cannot be resumed until the programming operation has completed. It is possible to accumulate suspend operations. For example, it is possible to suspend an erase operation, start a programming operation, suspend the programming operation, and then read the array. See Appendix C, Figure 23: Program suspend and resume flowchart and pseudo code and Figure 25: Erase suspend and resume flowchart and pseudo code for flowcharts for using the Program/Erase Resume command. |
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