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S71AL016M 데이터시트(HTML) 22 Page - SPANSION

부품명 S71AL016M
상세내용  Stacked Multi-Chip Product (MCP) Flash Memory and RAM
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제조사  SPANSION [SPANSION]
홈페이지  http://www.spansion.com
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S71AL016M 데이터시트(HTML) 22 Page - SPANSION

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S71AL016M
S71AL016M_M0 A0 February 23, 2005
Advanc e
Informatio 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 VID (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 VID. See Command
Definitions on page 29 for details on using the autoselect mode.
L = Logic Low = VIL, H = Logic High = VIH, 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
VID
X
L
X
L
L
X
01h
Device ID:
S29AL016M (Model 01)
(Top Boot Block)
L
L
H
X
X
VID
X
L
X
L
H
22h
C4h
X
C4h
Device ID:
S29AL016M (Model 02)
(Bottom Boot Block)
L
L
H
X
X
VID
X
L
X
L
H
22h
49h
X
49h
Sector Protection
Verification
L
L
H
SA
X
VID
X
L
X
H
L
X
01h (protected)
X
00h
(unprotected)
SecSi Sector Indicator
Bit (DQ7)
L
L
H
X
X
VID
X
H
X
L
H
X
83 (factory
locked
03h (not
factory locked)


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