- 您现在的位置：买卖IC网 > PDF目录375300 > AM29DS322T120WMIN (Spansion Inc.) 32 Megabit (4 M x 8-Bit/2 M x 16-Bit) CMOS 1.8 Volt-only, Simultaneous Operation Flash Memory PDF资料下载
参数资料
| 型号： | AM29DS322T120WMIN |
| 厂商： | Spansion Inc. |
| 英文描述： | 32 Megabit (4 M x 8-Bit/2 M x 16-Bit) CMOS 1.8 Volt-only, Simultaneous Operation Flash Memory |
| 中文描述： | 32兆位（4个M × 8位/ 2米x 16位），1.8伏的CMOS只，同时作业快闪记忆体 |
| 文件页数： | 18/52页 |
| 文件大小： | 604K |
| 代理商： | AM29DS322T120WMIN |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页当前第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页
May 15, 2002
Am29DS32xG
17
A D V A N C E I N F O R M A T I O N
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 1.8 volt-only AMD flash devices.
Publication number 22244 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 the Autoselect Mode sec-
tion for details.
Write Protect (WP#)
The Write Protect function provides a hardware
method of protecting certain boot sectors without
using V
ID
. This function is one of two provided by the
WP#/ACC pin.
If the system asserts V
IL
on the WP#/ACC pin, the de-
vice disables program and erase functions in the two
“outermost” 8 Kbyte boot sectors independently of
whether those sectors were protected or unprotected
using the method described in “Sector/Sector Block
Protection and Unprotection”. The two outermost 8
Kbyte boot sectors are the two sectors containing the
lowest addresses in a bottom-boot-configured device,
or the two sectors containing the highest addresses in
a top-boot-configured device.
If the system asserts V
IH
on the WP#/ACC pin, the de-
vice reverts to whether the two outermost 8K Byte
boot sectors were last set to be protected or unpro-
tected. That is, sector protection or unprotection for
these two sectors depends on whether they were last
protected or unprotected using the method described
in “Sector/Sector Block Protection and Unprotection”.
Note that the WP#/ACC pin must not be left floating or
unconnected; inconsistent behavior of the device may
result.
Temporary Sector Unprotect
(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 Tables
8 and 9).
This feature allows temporary unprotection of previ-
ously protected sectors to change data in-system. The
Sector Unprotect mode is activated by setting the RE-
SET# pin to V
ID
. During this mode, formerly protected
sectors can be programmed or erased by selecting the
sector addresses. Once V
ID
is removed from the RE-
SET# pin, all the previously protected sectors are
protected again. Figure 1 shows the algorithm, and
Figure 24 shows the timing diagrams, for this feature.
Figure 1.
Temporary Sector Unprotect Operation
START
Perform Erase or
Program Operations
RESET# = V
IH
Temporary Sector
Unprotect Completed
(Note 2)
RESET# = V
ID
(Note 1)
Notes:
1. All protected sectors unprotected (If WP#/ACC = V
IL
,
outermost boot sectors will remain protected).
2. All previously protected sectors are protected once
again.
相关PDF资料 |
PDF描述 |
|---|---|
| AM29F010B | 1 Megabit (128 K x 8-bit) CMOS 5.0 Volt-only, Uniform Sector Flash Memory |
| AM29F010B70JI | LCD Character display; No. of Digits/Alpha:32; Display Technology:LCD; Leaded Process Compatible:Yes; Peak Reflow Compatible (260 C):Yes RoHS Compliant: Yes |
| AM29F010B70PC | LM3211 Step-up PWM DC/DC Converter Integrated with 4 Buffers; Package: TSSOP; No of Pins: 20; Qty per Container: 2500; Container: Reel |
| AM29F010B70PE | 1 Megabit (128 K x 8-bit) CMOS 5.0 Volt-only, Uniform Sector Flash Memory |
| AM29F010B70PI | 1 Megabit (128 K x 8-bit) CMOS 5.0 Volt-only, Uniform Sector Flash Memory |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AM29DS323DT-110WMI | 制造商:Spansion 功能描述:NOR Flash Parallel 32Mbit 4M/2M x 8bit/16bit 110ns 48-Pin FBGA |
| AM29DS323DT11WMINS | 制造商:Advanced Micro Devices 功能描述: |
| AM29F002B-70JC | 制造商:Advanced Micro Devices 功能描述:NOR Flash, 256K x 8, 32 Pin, Plastic, PLCC |
| AM29F002BB-120EC | 制造商:Spansion 功能描述:2M (256KX8) 5V, BOOT BLOCK, BOT, TSOP32, COM - Trays |
| AM29F002BB-120JCT | 制造商:Spansion 功能描述:2M (256KX8) 5V, BOOT BLOCK, BOT, PLCC32, COM, T&R - Tape and Reel |
发布紧急采购，3分钟左右您将得到回复。