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AM29PDS322D 数据表(PDF) 17 Page - Advanced Micro Devices

部件名 AM29PDS322D
功能描述  32 Megabit (2 M x 16-Bit) CMOS 1.8 Volt-only (1.8 V to 2.2 V) Simultaneous Read/Write Page-Mode Boot Sector Flash Memory
PDF  51 Pages
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制造商  AMD [Advanced Micro Devices]
网页  http://www.amd.com
标志 AMD - Advanced Micro Devices

AM29PDS322D 数据表(HTML) 17 Page - Advanced Micro Devices

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December 4, 2006 23569A5
Am29PDS322D
15
D A TA
SH EET
Autoselect Mode
The autoselect mode provides manufacturer and de-
vice identification, and sector protection verification,
through identifier codes output on DQ15–DQ0. This
mode is primarily intended for programming equip-
ment to automatically match a device to be pro-
gramme d with its corresponding programm ing
algorithm. However, the autoselect codes can also be
accessed in-system through the command register.
When using programming equipment, the autoselect
mode requires V
ID (8.5 V to 12.5 V) on address pin A9.
Address pins A6, A1, and A0 must be as shown in
Table 7. In addition, when verifying sector protection,
the sector address must appear on the appropriate
highest order address bits (see Tables 3 through 6).
Table 7 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 DQ15–DQ0.
To access the autoselect codes in-system, the host
system can issue the autoselect command via the
command register, as shown in Table 10. This method
does not require V
ID. Refer to the Autoselect Com-
mand Sequence section for more information.
Table 7.
Autoselect Codes (High Voltage Method)
Legend: L = Logic Low = VIL, H = Logic High = VIH, SA = Sector Address, X = Don’t care.
Description
CE# OE# WE#
A20
to
A12
A11
to
A10
A9
A8
to
A7
A6
A5
to
A4
A3
A2
A1
A0
DQ15 to DQ0
Manufacturer ID:
AMD
LL
H
X
X
VID
XLX
X
XL
L
0001h
Device ID Word 1
L
L
H
X
X
VID
XLXL
L
L
H
227Eh
Device ID Word 2
L
L
H
X
X
V
ID
X
L
X
HHH
L
2206h
Device ID Word 3:
Top or Bottom Boot
LL
H
X
X
V
ID
X
L
X
HHH
H
2201h (Top Boot),
2200h (Bottom Boot)
Sector Protection
Verification
LL
H
SAX
VID
XLX
X
X
H
L
XX01h (protected),
XX00h (unprotected)
SecSi Indicator Bit
(DQ7),
WP# protects
highest address
sector
LL
H
X
X
VID
XLX
X
X
H
H
80h (factory locked),
00h (not factory locked)



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