Datenblatt-Suchmaschine für elektronische Bauteile |
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S29GL512N Datenblatt(PDF) 49 Page - Cypress Semiconductor |
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S29GL512N Datenblatt(HTML) 49 Page - Cypress Semiconductor |
49 / 92 page Document Number: 002-01522 Rev. *B Page 49 of 92 S29GL512N S29GL256N S29GL128N Figure 9.3 Program Suspend/Program Resume 9.7 Chip Erase Command Sequence Chip erase is a six bus cycle operation. The chip erase command sequence is initiated by writing two unlock cycles, followed by a set-up command. Two additional unlock write cycles are then followed by the chip erase command, which in turn invokes the Embedded Erase algorithm. The device does not require the system to preprogram prior to erase. The Embedded Erase algorithm automatically preprograms and verifies the entire memory for an all zero data pattern prior to electrical erase. The system is not required to provide any controls or timings during these operations. Table on page 54 and Table on page 57 show the address and data requirements for the chip erase command sequence. When the Embedded Erase algorithm is complete, the device returns to the read mode and addresses are no longer latched. The system can determine the status of the erase operation by using DQ7, DQ6, or DQ2. Refer to Write Operation Status on page 59 for information on these status bits. Any commands written during the chip erase operation are ignored, including erase suspend commands. However, note that a hardware reset immediately terminates the erase operation. If that occurs, the chip erase command sequence should be reinitiated once the device has returned to reading array data, to ensure data integrity. Figure 9.4 on page 50 illustrates the algorithm for the erase operation. Note that the Secured Silicon Sector, autoselect, and CFI functions are unavailable when an erase operation in is progress. Refer to Erase and Program Operations on page 71 for parameters, and Figure 15.6 on page 73 for timing diagrams. Program Operation or Write-to-Buffer Sequence in Progress Write Program Suspend Command Sequence Command is also valid for Erase-suspended-program operations Autoselect and SecSi Sector read operations are also allowed Data cannot be read from erase- or program-suspended sectors Write Program Resume Command Sequence Read data as required Done reading? No Yes Write address/data XXXh/30h Device reverts to operation prior to Program Suspend Write address/data XXXh/B0h Wait 15 μs |
Ähnliche Teilenummer - S29GL512N |
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Ähnliche Beschreibung - S29GL512N |
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