- 您现在的位置：买卖IC网 > PDF目录375300 > AM29DS322B120EI (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： | AM29DS322B120EI |
| 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： | 3/52页 |
| 文件大小： | 604K |
| 代理商： | AM29DS322B120EI |
第1页第2页当前第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
2
Am29DS32xG
May 15, 2002
A D V A N C E I N F O R M A T I O N
GENERAL DESCRIPTION
The Am29DS32xG family consists of 32 megabit, 1.8
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 1.8 volt V
CC
supply, and can also be programmed
in standard EPROM programmers.
The devices are available with an access time of 60,
70, 90, or 120 ns. (An 80 ns speed option at the stan-
dard voltage range is also available. Contact AMD or
an AMD representative for more information.) The de-
vices are offered in 48-pin TSOP and 48-ball FBGA
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 1.8 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 Am29DS32xG device family uses multiple bank
architectures to provide flexibility for different applica-
tions. Three devices are available with the following
bank sizes:
Am29DS32xG Features
The
SecSi
TM
(Secured Silicon) Sector
is an extra sector
capable of being permanently locked by AMD or cus-
tomers. The
SecSi 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.
Factory locked parts provide several options. The
SecSi Sector
may store a secure, random 16 byte
ESN (Electronic Serial Number), customer code (pro-
grammed 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 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
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.
Hardware data protection
measures include a low
V
CC
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 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.
Device
DS322
DS323
DS324
Bank 1
4
8
16
Bank 2
28
24
16
相关PDF资料 |
PDF描述 |
|---|---|
| AM29DS322B120EIN | 32 Megabit (4 M x 8-Bit/2 M x 16-Bit) CMOS 1.8 Volt-only, Simultaneous Operation Flash Memory |
| AM29DS322B120WMI | 32 Megabit (4 M x 8-Bit/2 M x 16-Bit) CMOS 1.8 Volt-only, Simultaneous Operation Flash Memory |
| AM29DS322B120WMIN | 32 Megabit (4 M x 8-Bit/2 M x 16-Bit) CMOS 1.8 Volt-only, Simultaneous Operation Flash Memory |
| AM29DS322B70EE | 32 Megabit (4 M x 8-Bit/2 M x 16-Bit) CMOS 1.8 Volt-only, Simultaneous Operation Flash Memory |
| AM29DS322B70EEN | 32 Megabit (4 M x 8-Bit/2 M x 16-Bit) CMOS 1.8 Volt-only, Simultaneous Operation 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。