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参数资料
| 型号： | AM29LV640ML120PCI |
| 厂商： | ADVANCED MICRO DEVICES INC |
| 元件分类： | PROM |
| 英文描述： | 64 Megabit (4 M x 16-Bit/8 M x 8-Bit) MirrorBit⑩ 3.0 Volt-only Uniform Sector Flash Memory with VersatileI/O⑩ Control |
| 中文描述： | 4M X 16 FLASH 3V PROM, 120 ns, PBGA64 |
| 封装： | 13 X 11 MM, 1 MM PITCH, BGA-64 |
| 文件页数： | 18/62页 |
| 文件大小： | 602K |
| 代理商： | AM29LV640ML120PCI |
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16
Am29LV640MH/L
December 14, 2005
D A T A S H E E T
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 corresponding programming
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 2.
Autoselect Codes, (High Voltage Method)
Legend:
L = Logic Low = V
IL
, H = Logic High = V
IH
, SA = Sector Address, X = Don’t care.
Sector Group Protection and
Unprotection
The hardware sector group protection feature disables
both program and erase operations in any sector
group. In this device, a sector group consists of four
adjacent sectors that are protected or unprotected at
the same time (see
Table 4
). The hardware sector
group unprotection feature re-enables both program
and erase operations in previously protected sector
groups. Sector group protection/unprotection can be
implemented via two methods.
Sector protection/unprotection requires V
ID
on the RE-
SET# pin only, and can be implemented either in-sys-
tem or via programming equipment. Figure 2 shows
the algorithms and Figure 24 shows the timing dia-
gram. This method uses standard microprocessor bus
cycle timing. For sector group unprotect, all unpro-
tected sector groups must first be protected prior to
the first sector group unprotect write cycle.
The device is shipped with all sector groups unpro-
tected. AMD offers the option of programming and pro-
tecting sector groups at its factory prior to shipping the
device through AMD’s ExpressFlash Service. Con-
tact an AMD representative for details.
It is possible to determine whether a sector group is
protected or unprotected. See the
Autoselect Mode
section for details.
Description
CE#
OE#
WE#
A21
to
A15
X
A14
to
A10
X
A9
A8
to
A7
X
A6
A5
to
A4
X
A3
to
A2
L
L
H
A1
A0
DQ8 to DQ15
DQ7 to DQ0
BYTE#=
V
IH
00
22
22
BYTE# =
V
IL
X
X
X
Manufacturer ID
:
AMD
Cycle 1
Cycle 2
L
L
H
V
ID
L
L
L
H
L
H
L
01h
7Eh
0Ch
D
L
L
H
X
X
V
ID
X
L
X
Cycle 3
H
H
H
22
X
01h
Sector Protection
Verification
SecSi Sector Indicator
Bit (DQ7), WP# protects
highest address sector
SecSi
Sector Indicator
Bit (DQ7), WP# protects
lowest address sector
L
L
H
SA
X
V
ID
X
L
X
L
H
L
X
X
01h (protected),
00h (unprotected)
L
L
H
X
X
V
ID
X
L
X
L
H
H
X
X
98h (factory locked),
18h (not factory locked)
L
L
H
X
X
V
ID
X
L
X
L
H
H
X
X
88h (factory locked),
08h (not factory locked)
Table 3.
Sector Group Protection/Unprotection Address Table
Sector Group
A21–A15
SA0
0000000
SA1
0000001
SA2
0000010
SA3
0000011
SA4–SA7
00001xx
SA8–SA11
00010xx
SA12–SA15
00011xx
相关PDF资料 |
PDF描述 |
|---|---|
| AM29LV640ML120REI | 64 Megabit (4 M x 16-Bit/8 M x 8-Bit) MirrorBit⑩ 3.0 Volt-only Uniform Sector Flash Memory with VersatileI/O⑩ Control |
| AM29LV640ML120RFI | 64 Megabit (4 M x 16-Bit/8 M x 8-Bit) MirrorBit⑩ 3.0 Volt-only Uniform Sector Flash Memory with VersatileI/O⑩ Control |
| AM29LV640ML120RPCI | 64 Megabit (4 M x 16-Bit/8 M x 8-Bit) MirrorBit⑩ 3.0 Volt-only Uniform Sector Flash Memory with VersatileI/O⑩ Control |
| AM29LV640ML90REI | 64 Megabit (4 M x 16-Bit/8 M x 8-Bit) MirrorBit⑩ 3.0 Volt-only Uniform Sector Flash Memory with VersatileI/O⑩ Control |
| AM29LV640ML90RFI | 64 Megabit (4 M x 16-Bit/8 M x 8-Bit) MirrorBit⑩ 3.0 Volt-only Uniform Sector Flash Memory with VersatileI/O⑩ Control |
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|---|---|
| AM29LV640MU101RPCI | 制造商:Advanced Micro Devices 功能描述: |
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| AM29LV640MU90RPC1 | 制造商:Advanced Micro Devices 功能描述: |
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