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AM41LV3204M Datasheet(PDF) 31 Page - SPANSION |
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AM41LV3204M Datasheet(HTML) 31 Page - SPANSION |
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31 / 67 page  30 Am41LV3204M June 10, 2003 P R E L I M I NARY Figure 5. Program Operation Program Suspend/Program Resume Command Sequence The Program Suspend command allows the system to interrupt a programming operation or a Write to Buffer programming operation so that data can be read from any non-suspended sector. When the Program Sus- pend command is written during a programming pro- cess, the device halts the program operation within 15 µs maximum (5 µs typical) and updates the status bits. Addresses are not required when writing the Program Suspend command. After the programming operation has been sus- pended, the system can read array data from any non-suspended sector. The Program Suspend com- mand may also be issued during a programming oper- ation while an erase is suspended. In this case, data may be read from any addresses not in Erase Sus- pend or Program Suspend. If a read is needed from the SecSi Sector area (One-time Program area), then user must use the proper command sequences to enter and exit this region. The system may also write the autoselect command sequence when the device is in the Program Suspend mode. The system can read as many autoselect codes as required. When the device exits the autose- lect mode, the device reverts to the Program Suspend mode, and is ready for another valid operation. See Autoselect Command Sequence for more information. After the Program Resume command is written, the device reverts to programming. The system can de- termine the status of the program operation using the DQ7 or DQ6 status bits, just as in the standard pro- gram operation. See Write Operation Status for more information. The system must write the Program Resume com- mand (address bits are don’t care) to exit the Program Suspend mode and continue the programming opera- tion. Further writes of the Resume command are ig- nored. Another Program Suspend command can be written after the device has resume programming. START Write Program Command Sequence Data Poll from System Verify Data? No Yes Last Address? No Yes Programming Completed Increment Address Embedded Program algorithm in progress Note: See Tables 10 and 13 for program command sequence. |
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