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參數(shù)資料
| 型號： | AM29LV033C-120WDK |
| 廠商： | Advanced Micro Devices, Inc. |
| 英文描述： | 32 Megabit (4 M x 8-Bit) CMOS 3.0 Volt-only Uniform Sector Flash Memory |
| 中文描述： | 32兆位（4個M × 8位）的CMOS 3.0伏特，只有統(tǒng)一部門閃存 |
| 文件頁數(shù)： | 15/49頁 |
| 文件大?。?/td> | 693K |
| 代理商： | AM29LV033C-120WDK |
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22268B5 September 12, 2006
Am29LV033C
13
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
(11.5 V to 12.5 V) on address pin
A9. Address pins A6, 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.
Table 3
shows the remain-
ing address bits that are don’t care. When all neces-
sary bits are 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
Table 9, on page 25
.
This method does not require V
ID
. See “Writing spe-
cific address and data commands or sequences into
the command register initiates device operations.
Table 9, on page 25
defines the valid register com-
mand sequences. Writing incorrect address and data
values or writing them in the improper sequence re-
sets the device to reading array data.” for details on
using the autoselect mode.
Table 3.
Am29LV033C Autoselect Codes (High Voltage Method)
L = Logic Low = V
IL
, H = Logic High = V
IH
, SA = Sector Address, X = Don’t care.
Sector/Sector Block Protection and
Unprotection
(Note: For the following discussion, the term “sector”
applies to both sectors and sector blocks. A sector
block consists of two or more adjacent sectors that are
protected or unprotected at the same time (see
Table 4,
on page 16
).
The hardware sector protection feature disables both
program and erase operations in any sector. The hard-
ware sector unprotection feature re-enables both pro-
gram and erase operations in previously protected
sectors. Sector protection/unprotection can be imple-
mented via two methods.
The primary method requires V
ID
on the RESET# pin
only, and can be implemented either in-system or via
programming equipment.
Figure 2, on page 17
shows
the algorithms and
Figure 22, on page 41
shows the
timing diagram. This method uses standard micropro-
cessor bus cycle timing. For sector unprotect, all un-
protected sectors must first be protected prior to the
first sector unprotect write cycle.
The alternate method intended only for programming
equipment requires V
ID
on address pin A9 and OE#.
This method is compatible with programmer routines
written for earlier 3.0 volt-only AMD flash devices.
Publication number 22269 contains further details;
contact an AMD representative to request a copy.
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 pro-
tected or unprotected. See
“Autoselect Mode” on
page 15
for details.
Description
CE#
OE#
WE#
A21
to
A16
A15
to
A10
A9
A8
to
A7
A6
A5
to
A2
A1
A0
DQ7
to
DQ0
Manufacturer ID
:
AMD
L
L
H
X
X
V
ID
X
L
X
L
L
01h
Device ID: Am29LV033C
L
L
H
X
X
V
ID
X
L
X
L
H
A3h
Sector Protection Verification
L
L
H
SA
X
V
ID
X
L
X
H
L
01h
(protected)
00h
(unprotected)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AM29LV033C-70EF | 32 Megabit (4 M x 8-Bit) CMOS 3.0 Volt-only Uniform Sector Flash Memory |
| AM29LV033C-70FF | 32 Megabit (4 M x 8-Bit) CMOS 3.0 Volt-only Uniform Sector Flash Memory |
| AM29LV033C-70WDF | 32 Megabit (4 M x 8-Bit) CMOS 3.0 Volt-only Uniform Sector Flash Memory |
| AM29LV033C-90EF | 32 Megabit (4 M x 8-Bit) CMOS 3.0 Volt-only Uniform Sector Flash Memory |
| AM29LV033C-90EK | 32 Megabit (4 M x 8-Bit) CMOS 3.0 Volt-only Uniform Sector Flash Memory |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AM29LV033C-70EI | 制造商:Advanced Micro Devices 功能描述: 制造商:Advanced Micro Devices 功能描述:NOR Flash, 4M x 8, 40 Pin, Plastic, TSSOP |
| AM29LV033C-90EF | 制造商:Advanced Micro Devices 功能描述:4M X 8 FLASH 3V PROM, 90 ns, PDSO40 |
| AM29LV033C-90WDI-T | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Advanced Micro Devices 功能描述: 制造商:AMD 功能描述: |
| AM29LV040B-120EC\\T | 制造商:Spansion 功能描述:FLASH PARALLEL 3V/3.3V 4MBIT 512KX8 120NS 32TSOP - Tape and Reel |
| AM29LV040B-120EC\T | 制造商:Spansion 功能描述:FLASH PARALLEL 3V/3.3V 4MBIT 512KX8 120NS 32TSOP - Tape and Reel |
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