28F640W30 NUMONYX [Numonyx B.V], 28F640W30 Datasheet - Page 88

• Manufacturer Part Number: 28F640W30
• Description: Numonyx Wireless Flash Memory (W30)
• Manufacturer: NUMONYX [Numonyx B.V]

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Datasheet
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All partitions default to Read Array mode at power-up. A Read Array command issued to a busy partition results in
undetermined data when a partition address is read.
Both cycles of two-cycle commands must be issued to the same partition address. If the two cycles are issued to different
partitions, the address used for the second write cycle determines the active partition. Both partitions output status
information when read.
If the WSM is active, both cycles of a two-cycle command are ignored. This feature differs from previous Numonyx flash
memory devices.
The Clear Status command clears status register error bits, except when the WSM is running (Pgm Busy, Erase Busy, Pgm
Busy In Erase Suspend, OTP Busy, EFP modes) or suspended (Erase Suspend, Pgm Suspend, Pgm Suspend In Erase
Suspend).
EFP writes are allowed only when status register bit SR.0 = 0. EFP is busy if the Block Address = the address at the EFP
Confirm command. Any other commands are treated as data.
The current state is the state of the WSM, not the state of the partition.
Confirm commands (Lock Block, Unlock Block, Lock-down Block, Configuration Register) perform the operation and then
move to the Ready State.
In Erase suspend mode, the only valid two-cycle commands are Program Word, Lock/Unlock/Lockdown Block, and CR
Write. Both cycles of other two-cycle commands (Program OTP & confirm, EFP Setup & confirm, Erase setup & confirm) are
ignored. In Program suspend or Program suspend in Erase suspend, both cycles of all two-cycle commands are ignored.
Numonyx™ Wireless Flash Memory (W30)
Numonyx™ Wireless Flash Memory (W30)
Order Number: 290702-13
November 2007