參數(shù)資料
型號(hào)： AM29LV640MH101EF
廠商： SPANSION LLC
元件分類： PROM
英文描述： 4M X 16 FLASH 3V PROM, 100 ns, PDSO56
封裝： MO-142B, TSOP-56
文件頁數(shù)： 8/59頁
文件大小： 1590K
代理商： AM29LV640MH101EF
16
Am29LV640MH/L
February 16, 2003
ADV ANCE
I N FO RMAT I O N
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-
grammed with its co rresponding 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 on address pin A9. Address pins
A6, A3, A2, A1, and A0 must be as shown in Table 3.
In addition, when verifying sector protection, the sector
address must appear on the appropriate highest order
address bits (see Table 2). Table 3 shows the remain-
ing address bits that are don’t care. When all neces-
sary bits have been set as required, the programming
equipment may then read the corresponding 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 Tables 10 and 11. This
method does not require V
ID. Refer to the Autoselect
Command Sequence section for more information.
Table 3.
Autoselect Codes, (High Voltage Method)
Legend: L = Logic Low = V
IL, H = Logic High = VIH, SA = Sector Address, X = Don’t care.
Description
CE#
OE#
WE#
A21
to
A15
A14
to
A10
A9
A8
to
A7
A6
A5
to
A4
A3
to
A2
A1
A0
DQ8 to DQ15
DQ7 to DQ0
BYTE#
= V
IH
BYTE#
= V
IL
Manufacturer ID: AMD
L
H
X
V
ID
XL
X
L
00
X
01h
De
v
ice
ID
Cycle 1
LL
H
X
V
ID
XL
X
LL
H
22
X
7Eh
Cycle 2
H
L
22
X
0Ch
Cycle 3
H
22
X
01h
Sector Protection
Verification
LL
H
SA
X
V
ID
XL
X
L
H
L
X
01h (protected),
00h (unprotected)
SecSi Sector Indicator
Bit (DQ7), WP#
protects highest
address sector
LL
H
X
V
ID
XL
X
L
H
X
98h (factory locked),
18h (not factory locked)
SecSi Sector Indicator
Bit (DQ7), WP#
protects lowest
address sector
LL
H
X
V
ID
XL
X
L
H
X
88h (factory locked),
08h (not factory locked)
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