P r e l i m i n a r y
When using programming equipment, the autoselect mode requires VID on ad-
dress pin A9. Address pins must be as shown in Table 5. In addition, when
verifying sector protection, the sector address must appear on the appropriate
highest order address bits (see Table 3). Table 5 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. However, the autoselect codes can also be accessed in-system
through the command register, for instances when the S29JL064 is erased or pro-
grammed in a system without access to high voltage on the A9 pin. The command
sequence is illustrated in Table 4. Note that if a Bank Address (BA) on address
bits A21, A20, and A19 is asserted during the third write cycle of the autoselect
command, the host system can read autoselect data from that bank and then im-
mediately read array data from another bank, without exiting the autoselect
mode.
To access the autoselect codes in-system, the host system can issue the autose-
lect command via the command register, as shown in Table 4. This method does
not require VID. Refer to the Autoselect Command Sequence section for more
information.
Table 5. S29JL064H Autoselect Codes, (High Voltage Method)
DQ15 to DQ8
A21 A11
to to
A8
to
A5
to
DQ7
to
BYTE# BYTE#
Description
CE# OE# WE# A12 A10 A9 A7 A6 A4 A3 A2 A1 A0
= V
= V
DQ0
IH
IL
Manufacturer ID:
Spansion Products
V
V
V
L
L
L
L
L
L
H
H
H
BA
BA
SA
X
X
X
X
X
X
L
X
X
X
L
L
L
L
X
X
01h
ID
ID
ID
Read Cycle 1
Read Cycle 2
Read Cycle 3
L
L
L
L
H
H
L
H
H
L
H
H
H
L
22h
22h
22h
7Eh
02h
01h
X
X
H
Sector Protection
Verification
01h (protected),
00h (unprotected)
L
L
L
H
L
X
80h (factory locked),
40h (customer
locked), 00h (not
factory/customer
locked)
SecSi Indicator Bit
(DQ6, DQ7)
V
L
L
H
BA
X
X
L
X
L
L
H
H
X
X
ID
Legend: L = Logic Low = V , H = Logic High = V , BA = Bank Address, SA = Sector Address, X = Don’t care
.
IL
IH
Sector/Sector Block Protection and Unprotection
(Note: For the following discussion, the term “sector” applies to both sectors and
sector blocks. A sector block consists of two or more adjacent sectors that are
protected or unprotected at the same time (see Table 6).
The hardware sector protection feature disables both program and erase opera-
tions in any sector. The hardware sector unprotection feature re-enables both
program and erase operations in previously protected sectors. Sector protection/
unprotection can be implemented via two methods.
March 26, 2004 S29JL064HA1
S29JL064H
19
SPANSION [ SPANSION ]
