D a t a S h e e t
Autoselect Mode
The autoselect mode provides manufacturer and device identification, and sector group pro-
tection verification, through identifier codes output on DQ7–DQ0. This mode is primarily
intended for programming equipment to automatically match a device to be programmed
with its corresponding programming algorithm. However, the autoselect codes can also be ac-
cessed in-system through the command register.
When using programming equipment, the autoselect mode requires VID on address pin A9.
Address pins A6, A3, A2, A1, and A0 must be as shown in Table 5 on page 37. In addition,
when verifying sector protection, the sector address must appear on the appropriate highest
order address bits (see Table 2 on page 16). Table 5 on page 37 shows the remaining address
bits that are don’t care. When all necessary 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 Table 12 on page 63 and Table 14 on page 65. This
method does not require VID. Refer to the “Autoselect Command Sequence” section on page
51 for more information.
Table 5. Autoselect Codes (High Voltage Method)
DQ8 to DQ15
A22t A14
to
A15 A10
A8
to
A7
A5
to
A4
A3
to
A2
Description
CE# OE# WE#
o
A9
A6
A1
A0
DQ7 to DQ0
BYTE# BYTE#
= V
= V
IH
IL
Manufacturer ID:
Spansion Product
L
L
L
L
H
H
X
X
X
X
V
V
X
X
L
X
X
L
L
L
00
X
01h
ID
ID
Cycle 1
Cycle 2
Cycle 3
Cycle 1
Cycle 2
Cycle 3
Cycle 1
Cycle 2
Cycle 3
L
H
H
L
L
H
H
L
H
L
22
22
22
22
22
22
22
22
22
X
X
X
X
X
X
X
X
X
7Eh
23h
01h
7Eh
22h
01h
7Eh
21h
01h
L
L
L
H
H
L
L
L
L
L
H
H
X
X
X
X
V
V
X
X
X
X
H
H
L
H
H
L
ID
ID
H
H
L
H
H
H
H
H
Sector Group
01h (protected),
L
L
L
L
H
H
SA
X
X
X
V
V
X
X
L
L
X
X
L
H
L
X
X
ID
ID
Protection Verification
00h (unprotected)
Secured Silicon Sector
Indicator Bit (DQ7),
WP# protects highest
address sector
98h (factory locked),
18h (not factory locked)
L
H
H
X
X
Secured Silicon Sector
Indicator Bit (DQ7),
WP# protects lowest
address sector
88h (factory locked),
08h (not factory locked)
L
L
H
X
X
V
X
L
X
L
H
H
X
X
ID
Legend: L = Logic Low = VIL, H = Logic High = VIH, SA = Sector Address, X = Don’t care.
S29GL-N_00_B3 October 13, 2006
S29GL-N MirrorBit™ Flash Family
37
SPANSION [ SPANSION ]
