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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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S29GL512T10TFIyyx Fiches technique(PDF) 28 Page - Cypress Semiconductor |
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S29GL512T10TFIyyx Fiches technique(HTML) 28 Page - Cypress Semiconductor |
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28 / 105 page  Document Number: 002-00247 Rev. *G Page 28 of 105 S29GL01GT, S29GL512T /* Example: Unlock Bypass Entry Command */ *( (UINT16 *)base_addr + 0x555 ) = 0x00AA; /* write unlock cycle 1 */ *( (UINT16 *)base_addr + 0x2AA ) = 0x0055; /* write unlock cycle 2 */ *( (UINT16 *)base_addr + 0x555 ) = 0x0020; /* write unlock bypass command */ /* At this point, programming only takes two write cycles. */ /* Once you enter Unlock Bypass Mode, do a series of like */ /* operations (programming or sector erase) and then exit */ /* Unlock Bypass Mode before beginning a different type of */ /* operations. */ /* Example: Unlock Bypass Program Command */ /* Do while in Unlock Bypass Entry Mode! */ *( (UINT16 *)base_addr ) = 0x00A0; /* write program setup command */ *( (UINT16 *)pa ) = data; /* write data to be programmed */ /* Poll until done or error. */ /* If done and more to program, */ /* do above two cycles again. */ /* Example: Unlock Bypass Exit Command */ *( (UINT16 *)base_addr ) = 0x0090; *( (UINT16 *)base_addr ) = 0x0000; 5.4.5 Evaluate Erase Status The Evaluate Erase Status (EES) command verifies that the last erase operation on the addressed sector was completed successfully (i.e. “Trust Worthy”). The EES command can be used to detect erase operations failed due to loss of power, reset, or failure during the erase operation. To initiate a EES on a Sector, write 35h to address 555h in the Sector, while the EAC is in the standby state. The EES command may not be written while the device is actively programming or erasing or suspended. The EES command does not allow for reads to the array during the operation. Use the Status Register or Polling method (only DQ6 toggles) to determine if the device is busy or completed. Once completed use the Status Register read to confirm if the sector is trust worthy or not. Bit 5 of the Status Register (SR[5]) will be cleared to 0 if the sector is trust worthy. If the sector is not trust worthy than SR[5] will be set to 1, RD/BY# will stay low, and either a Software Reset / ASO Exit command or a Status Register Clear command is required to return the device to the Standby State. Once the EES is completed, the EAC will return to the Standby State. The EES command requires tEES to complete and update the erase status in SR. The DRB bit (SR[7]) may be read to determine when the EES command is finished. If a sector is found not erased with SR[5]=1, the sector must be erased again to ensure reliable storage of data in the sector. Table 5.3 Unlock Bypass Program (LLD Function = lld_UnlockBypassProgramCmd) Cycle Description Operation Byte Address Word Adddress Data 1 Program Setup Write Base + XXXh Base + XXXh 00A0h 2 Program Command Write Program Address Program Address Program Data Table 5.4 Unlock Bypass Reset (LLD Function = lld_UnlockBypassResetCmd) Cycle Description Operation Byte Address Word Adddress Data 1 Reset Cycle 1 Write Base + XXXh Base + XXXh 0090h 2 Reset Cycle 2 Write Program Address Program Address 0000h |
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Description similaire - S29GL512T10TFIyyx |
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