256Mb: 3V Embedded Parallel NOR Flash
Registers
Figure 20: Toggle Bit Flowchart
Start
Read DQ6 at valid address
Read DQ6, DQ5, and DQ1
at valid address
No
DQ6 = Toggle
Yes
No
No
DQ5 = 1
Yes
DQ1 = 1
Yes
Read DQ6 (twice) at valid address
No
DQ6 = Toggle
Yes
Failure1
Success
1. Failure results: DQ5 = 1 indicates an operation error; DQ1 = 1 indicates a WRITE TO BUF-
FER PROGRAM ABORT operation.
Note:
PDF: 09005aef84bd3b68
m29w_256mb.pdf - Rev. B 5/13 EN
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