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參數(shù)資料
| 型號： | AM29SL800DT-100WCC |
| 廠商： | Advanced Micro Devices, Inc. |
| 英文描述： | 8 Megabit (1 M x 8-Bit/512 K x 16-Bit) CMOS 1.8 Volt-only Super Low Voltage Flash Memory |
| 中文描述： | 8兆位（1 M中的x 8-Bit/512畝x 16位），1.8伏的CMOS只超低電壓快閃記憶體 |
| 文件頁數(shù)： | 14/46頁 |
| 文件大?。?/td> | 1177K |
| 代理商： | AM29SL800DT-100WCC |
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A D V A N C E I N F O R M A T I O N
March 17, 2003
Am29SL800D
13
Autoselect Mode
The autoselect mode provides manufacturer and
device identification, and sector 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 command register.
When using programming equipment, the autoselect
mode requires VID on address pin A9. Address pins
A6, A1, and A0 must be as shown in Table 4. In addi-
tion, when verifying sector protection, the sector
address must appear on the appropriate highest order
address bits (see Tables 2 and 3). Table 4 shows the
remaining address bits that are don’t care. When all
necessary bits have been 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 autoselect command via the
command register, as shown in Table 5. This method
does not require VID. See “Command Definitions” for
details on using the autoselect mode.
Table 4.
Am29SL800D Autoselect Codes (High Voltage Method)
L = Logic Low = V
IL
, H = Logic High = V
IH
, SA = Sector Address, X = Don’t care.
Sector Protection/Unprotection
The hardware sector protection feature disables both
program and erase operations in any sector. The hard-
ware sector unprotection feature re-enables both
program and erase operations in previously protected
sectors. Sector protection/unprotection can be imple-
mented via two methods.
Sector Protection/ Unprotection requires V
ID
on the
RESET# pin only, and can be implemented either in-
system or via programming equipment. Figure 1 shows
the algorithms and Figure 23 shows the timing dia-
gram. For sector unprotect, all unprotected sectors
must first be protected prior to the first sector unprotect
write cycle.
The device is shipped with all sectors unprotected.
AMD offers the option of programming and protecting
sectors at its factory prior to shipping the device
through AMD’s ExpressFlash Service. Contact an
AMD representative for details.
It is possible to determine whether a sector is protected
or unprotected. See “Autoselect Mode” for details.
Temporary Sector Unprotect
This feature allows temporary unprotection of previ-
ously protected sectors to change data in-system. The
Sector Unprotect mode is activated by setting the
RESET# pin to V
ID
. During this mode, formerly pro-
tected sectors can be programmed or erased by
selecting the sector addresses. Once V
ID
is removed
from the RESET# pin, all the previously protected
sectors are protected again. Figure 2 shows the algo-
rithm, and Figure 22 shows the timing diagrams, for
this feature.
Description
Mode
CE#
OE#
WE#
A18
to
A12
A11
to
A10
A9
A8
to
A7
A6
A5
to
A2
A1
A0
DQ8
to
DQ15
DQ7
to
DQ0
Manufacturer ID
:
AMD
L
L
H
X
X
V
ID
X
L
X
L
L
X
01h
Device ID:
Am29SL800D
(Top Boot Block)
Word
L
L
H
X
X
V
ID
X
L
X
L
H
22h
EAh
Byte
L
L
H
X
EAh
Device ID:
Am29SL800D
(Bottom Boot Block)
Word
L
L
H
X
X
V
ID
X
L
X
L
H
22h
6Bh
Byte
L
L
H
X
6Bh
Sector Protection Verification
L
L
H
SA
X
V
ID
X
L
X
H
L
X
01h
(protected)
X
00h
(unprotected)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AM29SL800DT-100WCI | 8 Megabit (1 M x 8-Bit/512 K x 16-Bit) CMOS 1.8 Volt-only Super Low Voltage Flash Memory |
| AM29SL800DT100 | 8 Megabit (1 M x 8-Bit/512 K x 16-Bit) CMOS 1.8 Volt-only Super Low Voltage Flash Memory |
| AM29SL800DT120 | 8 Megabit (1 M x 8-Bit/512 K x 16-Bit) CMOS 1.8 Volt-only Super Low Voltage Flash Memory |
| AM29SL800DT150 | 8 Megabit (1 M x 8-Bit/512 K x 16-Bit) CMOS 1.8 Volt-only Super Low Voltage Flash Memory |
| AM29SL800DT90 | 8 Megabit (1 M x 8-Bit/512 K x 16-Bit) CMOS 1.8 Volt-only Super Low Voltage Flash Memory |
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參數(shù)描述 |
|---|---|
| AM29X305ADC | 制造商:Advanced Micro Devices 功能描述:Microprocessor, 8 Bit, 50 Pin, Ceramic, DIP |
| AM2A016 | 制造商:MAG-LITE 功能描述:Bulk |
| AM2A026 | 制造商:MAG-LITE 功能描述:Bulk |
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