參數(shù)資料
型號: AM29LV320DB120EE
廠商: SPANSION LLC
元件分類: PROM
英文描述: 2M X 16 FLASH 3V PROM, 120 ns, PDSO48
封裝: TSOP-48
文件頁數(shù): 8/53頁
文件大?。?/td> 1008K
代理商: AM29LV320DB120EE
16
Am29LV320D
July 30, 2002
Autoselect Mode
The autoselect mode provides manufacturer and de-
vice identification, and sector protection verification,
through identifier codes output on DQ7–DQ0. This
mode is primarily intended for programming equip-
ment to automatically match a device to be pro-
gram me d with its cor resp onding pr ogram m in g
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 (11.5 V to 12.5 V) on address pin
A9. Address pins A6, A1, and A0 must be as shown in
Table 6. In addition, when verifying sector protection,
the sector address must appear on the appropriate
highest order address bits (see Tables 2–5). Table 6
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 corre-
sponding identifier code on DQ7–DQ0.
To access the autoselect codes in-system, the host
system can issue the autoselect command via the
command register, as shown in Table 14. This method
does not require V
ID. Refer to the Autoselect Com-
mand Sequence section for more information.
Table 6.
Autoselect Codes (High Voltage Method)
Legend: T = Top Boot Block, B = Bottom Boot Block, L = Logic Low = V
IL, 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
A2
A1
A0
DQ8 to DQ15
DQ7
to
DQ0
BYTE#
= VIH
BYTE#
= VIL
Manufacturer ID: AMD
L
H
X
V
ID
XL
L
X
01h
Device ID: Am29LV320D
L
H
X
VID
X
L
X
L
H
22h
X
F6 (T), F9h (B)
Sector Protection
Verification
LL
H
SA
X
V
ID
XL
X
H
L
X
01h (protected),
00h (unprotected)
SecSi
TM Sector Indicator
Bit (DQ7)
LL
H
X
VID
XL
X
H
X
99h (factory locked),
19h (not factory
locked)
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