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AM29DL322GB90EI 参数 Datasheet PDF下载

AM29DL322GB90EI图片预览
型号: AM29DL322GB90EI
PDF下载: 下载PDF文件 查看货源
内容描述: 32兆位( 4米×8位/ 2的M× 16位) CMOS 3.0伏只,同时操作闪存 [32 Megabit (4 M x 8-Bit/2 M x 16-Bit) CMOS 3.0 Volt-only, Simultaneous Operation Flash Memory]
分类和应用: 闪存
文件页数/大小: 58 页 / 1293 K
品牌: SPANSION [ SPANSION ]
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D A T A S H E E T  
GENERAL DESCRIPTION  
The Am29DL32xG family consists of 32 megabit, 3.0  
volt-only flash memory devices, organized as  
2,097,152 words of 16 bits each or 4,194,304 bytes of  
8 bits each. Word mode data appears on DQ15–DQ0;  
byte mode data appears on DQ7–DQ0. The device is  
designed to be programmed in-system with the stan-  
dard 3.0 volt VCC supply, and can also be programmed  
in standard EPROM programmers.  
(programmed through AMD’s ExpressFlash service),  
or both.  
DMS (Data Management Software) allows systems  
to easily take advantage of the advanced architecture  
of the simultaneous read/write product line by allowing  
removal of EEPROM devices. DMS will also allow the  
system software to be simplified, as it will perform all  
functions necessary to modify data in file structures,  
as opposed to single-byte modifications. To write or  
update a particular piece of data (a phone number or  
configuration data, for example), the user only needs  
to state which piece of data is to be updated, and  
where the updated data is located in the system. This  
is an advantage compared to systems where  
user-written software must keep track of the old data  
location, status, logical to physical translation of the  
data onto the Flash memory device (or memory de-  
vices), and more. Using DMS, user-written software  
does not need to interface with the Flash memory di-  
rectly. Instead, the user's software accesses the Flash  
memory by calling one of only six functions. AMD pro-  
vides this software to simplify system design and soft-  
ware integration efforts.  
The devices are available with an access time of 70,  
90, or 120 ns. The devices are offered in 48-pin TSOP,  
48-ball or 63-ball FBGA, and 64-ball Fortified BGA  
packages. Standard control pins—chip enable (CE#),  
write enable (WE#), and output enable (OE#)—control  
normal read and write operations, and avoid bus con-  
tention issues.  
The devices requires only a single 3.0 volt power  
supply for both read and write functions. Internally  
generated and regulated voltages are provided for the  
program and erase operations.  
Simultaneous Read/Write Operations with  
Zero Latency  
The Simultaneous Read/Write architecture provides  
simultaneous operation by dividing the memory  
space into two banks. The device can improve overall  
system performance by allowing a host system to pro-  
gram or erase in one bank, then immediately and si-  
multaneously read from the other bank, with zero  
latency. This releases the system from waiting for the  
completion of program or erase operations.  
The device offers complete compatibility with the  
JEDEC single-power-supply Flash command set  
standard. Commands are written to the command  
register using standard microprocessor write timings.  
Reading data out of the device is similar to reading  
from other Flash or EPROM devices.  
The host system can detect whether a program or  
erase operation is complete by using the device sta-  
tus bits: RY/BY# pin, DQ7 (Data# Polling) and  
DQ6/DQ2 (toggle bits). After a program or erase cycle  
has been completed, the device automatically returns  
to the read mode.  
The Am29DL32xG device family uses multiple bank  
architectures to provide flexibility for different applica-  
tions. Three devices are available with the following  
bank sizes:  
Device  
DL322  
DL323  
DL324  
Bank 1  
Bank 2  
28  
The sector erase architecture allows memory sec-  
tors to be erased and reprogrammed without affecting  
the data contents of other sectors. The device is fully  
erased when shipped from the factory.  
4
8
24  
16  
16  
Am29DL32xG Features  
Hardware data protection measures include a low  
VCC detector that automatically inhibits write opera-  
tions during power transitions. The hardware sector  
protection feature disables both program and erase  
operations in any combination of the sectors of mem-  
ory. This can be achieved in-system or via program-  
ming equipment.  
The Secured Silicon Sector is an extra sector capable  
of being permanently locked by AMD or customers.  
The Secured Silicon Indicator Bit (DQ7) is perma-  
nently set to a 1 if the part is factory locked, and set  
to a 0 if customer lockable. This way, customer lock-  
able parts can never be used to replace a factory  
locked part. Current version of device has 256  
bytes, which differs from previous versions of this  
device.  
The device offers two power-saving features. When  
addresses have been stable for a specified amount of  
time, the device enters the automatic sleep mode.  
The system can also place the device into the  
standby mode. Power consumption is greatly re-  
duced in both modes.  
Factory locked parts provide several options. The Se-  
cured Silicon Sector may store a secure, random 16  
byte ESN (Electronic Serial Number), customer code  
2
Am29DL32xG  
25686B10 December 4, 2006