256Mb, 512Mb, 1Gb, 2Gb: 3V Embedded Parallel NOR Flash
Registers
Figure 6: Toggle Bit Flowchart
Start
Read DQ6 at valid address
Read DQ6, DQ5, and DQ1
at valid address
DQ6 = Toggle
Yes
No
No
No
DQ1 = 1
Yes
DQ5 = 1
Yes
Read DQ6 (twice) at valid address
DQ6 = Toggle
Yes
Failure
1
No
Success
Note:
1. Failure results: DQ5 = 1 indicates an operation error; DQ1 = 1 indicates a WRITE TO BUF-
FER PROGRAM ABORT operation.
PDF: 09005aef849b4b09
m29ew_256mb_2gb.pdf - Rev. B 8/12 EN
19
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