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 I/O, 8-Bit Only
DQ[14:8]
X
X
X
X
DQ[7:0]
20h
7Eh
21h
XX
Data I/O, 16-Bit Only
DQ[15]/A-1, and DQ[14:0]
0020h
227Eh
2221h
XXXX
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.
3. XX = 01h for M29W128GH and 00h for M29W128GL.
4. XXXX = 2201h for M29W128GH and 2200h for M29W128GL.
PDF: 09005aef84bd3b68
m29w_256mb.pdf - Rev. C 7/13 EN
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