Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF Download HTML

AM42DL640AG Datasheet(PDF) 3 Page - Advanced Micro Devices

Part No. AM42DL640AG
Description  64 Megabit (8 M x 8-Bit/4 M x 16-Bit) CMOS 3.0 Volt-only, Simultaneous Operation Flash Memory and 16 Mbit (1 M x 16-Bit) Static RAM
Download  62 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  AMD [Advanced Micro Devices]
Homepage  http://www.amd.com
Logo 

AM42DL640AG Datasheet(HTML) 3 Page - Advanced Micro Devices

 
Zoom Inzoom in Zoom Outzoom out
 3 / 62 page
background image
2
Am42DL640AG
October 22, 2002
PR E L I M I N A R Y
GENERAL DESCRIPTION
Am29DL640G Features
The Am29DL640G is a 64 megabit, 3.0 volt-only flash
memory device, organized as 4,194,304 words of 16
bits each or 8,388,608 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 standard 3.0 volt V
CC
supply, and can also be programmed in standard
EPROM programmers.
The device is available with an access time of 70 or 85
ns and is offered in a 73-ball FBGA package. Standard
control pins—chip enable (CE#f), write enable (WE#),
and output enable (OE#)—control normal read and
write operations, and avoid bus contention issues.
The device requires only a single 3.0 volt power sup-
ply for both read and write functions. Internally gener-
ated 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 four banks, two 8 Mb banks with small and
large sectors, and two 24 Mb banks of large sectors
only. Sector addresses are fixed, system software can
be used to form user-defined bank groups.
During an Erase/Program operation, any of the three
non-busy banks may be read from. Note that only two
banks can operate simultaneously. The device can im-
prove overall system performance by allowing a host
sys tem t o program or er ase in one bank , t hen
immediately and simultaneously read from the other
bank, with zero latency. This releases the system from
waiting for the completion of program or erase
operations.
The Am29DL640G offers top and bottom boot sectors
in the same device. Thus, the host system can config-
ure and use the device as required..
The SecSi™ (Secured Silicon) Sector is an extra
256 byte sector capable of being permanently locked
by AMD or customers. The SecSi Indicator Bit (DQ7)
is permanently set to a 1 if the part is factory locked,
and set to a 0 if customer lockable. This way, cus-
tomer lockable parts can never be used to replace a
factory locked part.
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. Customer Lockable parts may utilize the SecSi
Sector as a one-time programmable area.
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 advant age compar ed t o syst ems 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.
T he sys tem can also place the device into the
standby mode. Power consumption is greatly re-
duced in both modes.
Bank
Megabits
Sector Sizes
Bank 1
8 Mb
Eight 8 Kbyte/4 Kword,
Fifteen 64 Kbyte/32 Kword
Bank 2
24 Mb
Forty-eight 64 Kbyte/32 Kword
Bank 3
24 Mb
Forty-eight 64 Kbyte/32 Kword
Bank 4
8 Mb
Eight 8 Kbyte/4 Kword,
Fifteen 64 Kbyte/32 Kword


Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20  21  22  23  24  25  26  27  28  29  30  31  32  33  34  35  36  37  38  39  40  41  42  43  44  45  46  47  48  49  50  51  52  53  54  55  56  57  58  59  60  61  62 


Datasheet Download



Related Electronics Part Number

Part NumberComponents DescriptionHtml ViewManufacturer
AM41DL6408G64 Megabit 8 M x 8-Bit/4 M x 16-Bit CMOS 3.0 Volt-only Simultaneous Operation Flash Memory and 8 Mbit 1 M x 8-Bit/512 K x 16-Bit Static RAM 1 2 3 4 5 MoreAdvanced Micro Devices
AM42DL6402G64 Megabit 8 M x 8-Bit/4 M x 16-Bit CMOS 3.0 Volt-only Simultaneous Operation Flash Memory and 2 Mbit 128 K x 16-Bit Static RAM 1 2 3 4 5 MoreSPANSION
AM49DL640BG64 Megabit 8 M x 8-Bit/4 M x 16-Bit CMOS 3.0 Volt-only Simultaneous Operation Flash Memory and 32 Mbit 512 K x 16-Bit Pseudo Static RAM 1 2 3 4 5 MoreAdvanced Micro Devices
AM42DL6404G64 Megabit 8 M x 8-Bit/4 M x 16-Bit CMOS 3.0 Volt-only Simultaneous Operation Flash Memory and 4 Mbit 256 K x 16-Bit Static RAM 1 2 3 4 5 MoreAdvanced Micro Devices
AM42DL16X2DAm29DL16xD 16 Megabit 2 M x 8-Bit/1 M x 16-Bit CMOS 3.0 Volt-only Simultaneous Operation Flash Memory and 2 Mbit 128 K x 16-Bit Static RAM 1 2 3 4 5 MoreAdvanced Micro Devices
AM42DL640AH64 Megabit 4 M x 16-Bit CMOS 3.0 Volt-only Simultaneous Operation Flash Memory and 16 Mbit 1 M x 16-Bit Static RAM 1 2 3 4 5 MoreSPANSION
AM41DL16X4D16 Megabit 2 M x 8-Bit/1 M x 16-Bit CMOS 3.0 Volt-only Simultaneous Operation Flash Memory and 4 Mbit 512 K x 8-Bit/256 K x 16-Bit Static RAM 1 2 3 4 5 MoreAdvanced Micro Devices
AM49PDL640AG64 Megabit 4 M x 16-Bit CMOS 3.0 Volt-only Simultaneous Operation Flash Memory and 16 Mbit 1 M x 16-Bit Pseudo Static RAM 1 2 3 4 5 MoreSPANSION
AM49PDL127AH128 Megabit 8 M x 16-Bit CMOS 3.0 Volt-only Simultaneous Operation Flash Memory and 16 Mbit 1 M x 16-Bit CMOS Pseudo Static RAM 1 2 3 4 5 MoreSPANSION
AM49DL320BG32 Megabit 4 M x 8-Bit/2 M x 16-Bit CMOS 3.0 Volt-only Simultaneous Operation Flash Memory and 32 Mbit 2M x 16-Bit Pseudo Static RAM 1 2 3 4 5 MoreAdvanced Micro Devices

Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ]  

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Alldatasheet API   |   Link Exchange   |   Manufacturer List
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn