28F640W30 NUMONYX [Numonyx B.V], 28F640W30 Datasheet - Page 54

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

Figure 26: Interleaving a 2-Cycle Write Sequence with an Array Read
Figure 27: Improper Command Sequencing
Datasheet
54
Address [A]
Address [A]
Data [D/Q]
WE# [W]
Data [Q]
OE# [G]
WE# [W]
OE# [G]
By contrast, a write bus cycle must not interrupt a 2-cycle write sequence. Such an
interruption causes a command sequence error to appear in the status register.
Figure 27
illustrates a command sequence error.
Partiti on X
Partition B
20h
Read Array
FFh
Partitio n Y
FFh
Partition A
Erase Setup
20h
Parti tion X
D0h
Partition B
Numonyx™ Wireless Flash Memory (W30)
Numonyx™ Wireless Flash Memory (W30)
Array Data
Bus Read
Partition X
Order Number: 290702-13
Erase Conf irm
Partition A
SR Data
D0h
November 2007