32Mb, 64Mb, 128Mb: 3V Embedded Parallel NOR Flash
READ and AUTO SELECT Operations
Auto select mode is exited by performing a reset. The device returns to read mode un-
less it entered auto select mode after an ERASE SUSPEND or PROGRAM SUSPEND
command, in which case it returns to erase or program suspend mode.
Table 18: Read Electronic Signature
Note 1 applies to entire table
Address Input
8-Bit/16-Bit
Data Input/Output
16-Bit
Only
8-Bit
Only
8-Bit Only
Read Cycle
CE# OE# WE# A[MAX:11] A[10:4] A3 A2 A1 A0
A-1 DQ[14:8] DQ[7:0] DQ[15:0]
Manufacturer
code
L
L
H
X
L
L
L
L
L
X
X
89h
0089h
Device code 1
L
L
L
L
H
H
X
X
L
L
L
L
L
H
L
X
X
X
X
7Eh
21h
10h
227Eh
2221h
2210h
Device 128Mb
code 2
64Mb
H
H
H
boot
64Mb
uniform
0Ch
1Ah
1Dh
01h
220Ch
221Ah
221Dh
2201h
32Mb
boot
32Mb
uniform
Device 128Mb
code 3 uniform
L
L
H
X
L
H
H
H
H
X
X
64Mb
uniform
64Mb
top
32Mb
top
Device 64Mb
L
L
H
X
L
H
H
H
H
X
X
00h
2200h
code 3 bottom
32Mb
bottom
32Mb
uniform
1. H = Logic level HIGH (VIH); L = Logic level LOW (VIL); X = HIGH or LOW.
Note:
PDF: 09005aef84dc44a7
m29ew_32Mb-128Mb.pdf - Rev. B 11/12 EN
Micron Technology, Inc. reserves the right to change products or specifications without notice.
34
© 2012 Micron Technology, Inc. All rights reserved.
MICRON [ MICRON TECHNOLOGY ]
