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| 型號： | S71AL016M40 |
| 廠商： | Spansion Inc. |
| 英文描述： | Stacked Multi-Chip Product (MCP) Flash Memory and RAM |
| 中文描述： | 堆疊式多芯片產(chǎn)品（MCP）的閃存和RAM |
| 文件頁數(shù)： | 22/68頁 |
| 文件大小： | 728K |
| 代理商： | S71AL016M40 |
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22
S71AL016M
S71AL016M_M0 A0 February 23, 2005
A d v a n c e I n f o r m a t i o n
Autoselect Mode
The autoselect mode provides manufacturer and device identification, and sec-
tor 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 com-
mand register.
When using programming equipment, the autoselect mode requires V
ID
(11.5 V
to 12.5 V) on address pin A9. Address pins A6, A1, and A0 must be as shown in
Table
4
. In addition, when verifying sector protection, the sector address must
appear on the appropriate highest order address bits (see
Table 2 on page 20
and
Table 3 on page 21
).
Table 4 on page 22
shows the remaining address bits
that are don’t care. When all necessary bits are set as required, the program-
ming equipment may then read the corresponding identifier code on DQ7-DQ0.
To access the autoselect codes in-system, the host system can issue the autose-
lect command via the command register, as shown in
Table 10 on page 37
and
Table 11 on page 43
. This method does not require V
ID
. See
Command
Definitions on page 29
for details on using the autoselect mode.
L = Logic Low = V
IL
, H = Logic High = V
IH
, SA = Sector Address, X = Don’t care.
Note:
The autoselect codes may also be accessed in-system via command sequences. See
Table 10 on page 37
and
Table 11 on page 43
.
Sector Protection/Unprotection
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.
The device is normally shipped with all sectors unprotected. However, the Ex-
pressFlash Service offers the option of programming and protecting sectors at
the factory prior to shipping the device. Contact a sales office or representative
for details.
Table 4. Autoselect Codes (High Voltage Method)
Description
CE#
OE#
WE#
A19
to
A12
A11
to
A10
A9
A8
to
A7
A6
A5
to
A2
A1
A0
DQ8
to
DQ15
DQ7
to
DQ0
Manufacturer ID
(Spansion Products)
L
L
H
X
X
V
ID
X
L
X
L
L
X
01h
Device ID:
S29AL016M (Model 01)
(Top Boot Block)
L
L
H
X
X
V
ID
X
L
X
L
H
22h
C4h
X
C4h
Device ID:
S29AL016M (Model 02)
(Bottom Boot Block)
L
L
H
X
X
V
ID
X
L
X
L
H
22h
49h
X
49h
Sector Protection
Verification
L
L
H
SA
X
V
ID
X
L
X
H
L
X
01h (protected)
X
00h
(unprotected)
SecSi Sector Indicator
Bit (DQ7)
L
L
H
X
X
V
ID
X
H
X
L
H
X
83 (factory
locked
03h (not
factory locked)
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