s29jl064h Meet Spansion Inc., s29jl064h Datasheet - Page 21

• Manufacturer Part Number: s29jl064h
• Description: 64 Megabits 8 M X 8-bits / 4 M X 16-bits
• Manufacturer: Meet Spansion Inc.

8.9
Legend
L = Logic Low = V
H = Logic High = V
BA = Bank Address
SA = Sector Address
X = Don’t care.
September 19, 2007 S29JL064H_00_A7
Spansion Products
Indicator Bit (DQ6,
Sector Protection
Manufacturer ID:
Secured Silicon
Description
Verification
Read Cycle 1
Read Cycle 2
Read Cycle 3
DQ7)
Autoselect Mode
IL
IH
The autoselect mode provides manufacturer and device identification, and sector protection 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 accessed in-system through the command register.
When using programming equipment, the autoselect mode requires V
must be as shown in
on the appropriate highest order address bits (see
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. However, the autoselect codes
can also be accessed in-system through the command register, for instances when the S29JL064 is erased
or programmed in a system without access to high voltage on the A9 pin. The command sequence is
illustrated in
asserted during the third write cycle of the autoselect command, the host system can read autoselect data
from that bank and then immediately read array data from another bank, without exiting the autoselect mode.
To access the autoselect codes in-system, the host system can issue the autoselect command via the
command register, as shown in
Autoselect Command Sequence on page 32
CE#
L
L
L
L
OE#
L
L
L
L
Table 10.1 on page
Table 8.5 S29JL064H Autoselect Codes, (High Voltage Method)
WE#
H
H
H
H
A21
A12
BA
BA
SA
BA
Table
to
D a t a
A11
A10
8.5. In addition, when verifying sector protection, the sector address must appear
to
X
X
X
X
Table 10.1 on page
36. Note that if a Bank Address (BA) on address bits A21, A20, and A19 is
V
V
V
V
A9
ID
ID
ID
ID
S h e e t
A8
A7
to
X
X
X
X
S29JL064H
A6
L
L
L
L
L
L
for more information.
A5
A4
to
X
X
X
X
Table 8.3 on page
36. This method does not require V
A3
H
H
L
L
L
L
A2
H
H
L
L
L
L
A1
H
H
L
L
H
H
A0
20).
L
H
L
H
L
H
ID
on address pin A9. Address pins
BYTE#
Table 8.5
= V
DQ15 to DQ8
22h
22h
22h
X
X
X
IH
BYTE#
= V
shows the remaining
X
X
X
X
IL
ID
. Refer to
81h (factory locked),
00h (unprotected)
customer locked)
01h (not factory/
01h (protected),
DQ7
DQ0
01h
7Eh
02h
01h
to
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