256Mb: 3V Embedded Parallel NOR Flash
AUTO SELECT Operations
Table 10: Read Electronic Signature (Continued)
Note 1 applies to entire table
Read Cycle
Manufacturer
Signal
Code
Device Code 1
Device Code 3
Device Code 3 Notes
A0
L
H
L
H
Address Input, 8-Bit Only
DQ[15]/A-1
X
X
X
X
Data Input/Output, 8-Bit Only
DQ[14:8]
X
X
X
X
DQ[7:0]
20h
7Eh
22h
01h
Data Input/Output, 16-Bit Only
DQ[15]/A-1, and DQ[14:0]
0020h
227Eh
2222h
2201h
1. H = Logic level HIGH (VIH); L = Logic level LOW (VIL); X = HIGH or LOW.
Notes:
2. When using the AUTO SELECT command to enter auto select mode, applying VID to A9 is
not required. A9 can be either VIL or VIH.
PDF: 09005aef84bd3b68
m29w_256mb.pdf - Rev. B 5/13 EN
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