AM29LV320MH SPANSION [SPANSION], AM29LV320MH Datasheet - Page 17

• Manufacturer Part Number: AM29LV320MH
• Description: 32 Megabit (2 M x 16-Bit/4 M x 8-Bit) MirrorBit 3.0 Volt-only Uniform Sector Flash Memory with VersatileI/O Control
• Manufacturer: SPANSION [SPANSION]

Autoselect Mode
The autoselect mode provides manufacturer and de-
vice identification, and sector protection verification,
through identifier codes output on DQ7–DQ0. This
mode is primarily intended for programming equip-
ment to automatically match a device to be pro-
grammed with its corresponding programming
algorithm. However, the autoselect codes can also be
accessed in-system through the command register.
When using programming equipment, the autoselect
mode requires
A6, A3, A2, A1, and A0 must be as shown in Table 3.
Legend: L = Logic Low = V
December 14, 2005
Manufacturer ID: AMD
Sector Protection
Verification
SecSi Sector Indicator
Bit (DQ7), WP#
protects highest
address sector
SecSi Sector Indicator
Bit (DQ7), WP#
protects lowest
address sector
Description
Cycle 1
Cycle 2
Cycle 3
V
ID
on address pin A9. Address pins
CE#
IL
L
L
L
L
L
, H = Logic High = V
OE# WE#
L
L
L
L
L
Table 3. Autoselect Codes, (High Voltage Method)
H
H
H
H
H
A20
A15
SA
to
X
X
X
X
IH
, SA = Sector Address, X = Don’t care.
A14
A10
to
X
X
X
X
X
D A T A S H E E T
V
V
V
V
V
A9
ID
ID
ID
ID
ID
Am29LV320MH/L
A8
A7
to
X
X
X
X
X
A6
L
L
L
L
L
In addition, when verifying sector protection, the sector
address must appear on the appropriate highest order
address bits (see Table 2). Table 3 shows the remain-
ing address bits that are don’t care. When all neces-
sary bits have been set as required, the programming
equipment may then read the corresponding identifier
code on DQ7–DQ0.
To access the autoselect codes in-system, the host
system can issue the autoselect command via the
command register, as shown in Tables 10 and 11. This
method does not require V
Command Sequence
A5
A4
to
X
X
X
X
X
A3
A2
to
H
H
L
L
L
L
L
A1
H
H
H
H
H
L
L
A0
H
H
H
H
L
L
L
BYTE#
= V
DQ8 to DQ15
00
22
22
22
section for more information.
X
X
X
IH
BYTE#
ID
= V
. Refer to the
X
X
X
X
X
X
X
IL
18h (not factory locked)
08h (not factory locked)
98h (factory locked),
88h (factory locked),
00h (unprotected)
01h (protected),
DQ7 to DQ0
1Dh
01h
7Eh
00h
Autoselect
15