Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF Download HTML

AM29SL400D Datasheet(PDF) 18 Page - Advanced Micro Devices

Part No. AM29SL400D
Description  4 Megabit (512 K x 8-Bit/256 K x 16-Bit) CMOS 1.8 Volt-only Super Low Voltage Flash Memory
Download  41 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  AMD [Advanced Micro Devices]
Homepage  http://www.amd.com
Logo 

AM29SL400D Datasheet(HTML) 18 Page - Advanced Micro Devices

Zoom Inzoom in Zoom Outzoom out
 18 / 41 page
background image
16
Am29SL400D
Rev. A Amend. +1 April 13, 2005
ADV ANCE
I N FO RMAT I O N
Once the sector erase operation has begun, only the
Erase Suspend command is valid. All other commands
are ignored. Note that a hardware reset during the
sector erase operation immediately terminates the
operation. The Sector Erase command sequence
should be reinitiated once the device has returned to
reading array data, to ensure data integrity.
When the Embedded Erase algorithm is complete, the
device returns to reading array data and addresses are
no longer latched. The system can determine the
status of the erase operation by using DQ7, DQ6, DQ2,
or RY/BY#. (Refer to
Write Operation Status, on
page 18 for information on these status bits.)
Figure 4 illustrates the algorithm for the erase opera-
tion. Refer to the
Erase/Program Operations, on
page 29 for parameters, and to Figure 18, on page 31
for timing diagrams.
Erase Suspend/Erase Resume Commands
The Erase Suspend command allows the system to
interrupt a sector erase operation and then read data
from, or program data to, any sector not selected for
erasure. This command is valid only during the sector
erase operation, including the 50 µs time-out period
during the sector erase command sequence. The
Erase Suspend command is ignored if written during
the chip erase operation or Embedded Program algo-
rithm. Writing the Erase Suspend command during the
Sector Erase time-out immediately terminates the
time-out period and suspends the erase operation.
Addresses are “don’t-cares” when writing the Erase
Suspend command.
When the Erase Suspend command is written during a
sector erase operation, the device requires a maximum
of 20 µs to suspend the erase operation. However,
when the Erase Suspend command is written during
the sector erase time-out, the device immediately ter-
minates the time-out period and suspends the erase
operation.
After the erase operation has been suspended, the
system can read array data from or program data to
any sector not selected for erasure. (The device “erase
suspends” all sectors selected for erasure.) Normal
read and write timings and command definitions apply.
Reading at any address within erase-suspended
sectors produces status data on DQ7–DQ0. The
system can use DQ7, or DQ6 and DQ2 together, to
determine if a sector is actively erasing or is erase-sus-
pended. See
Write Operation Status, on page 18 for
information on these status bits.
After an erase-suspended program operation is com-
plete, the system can once again read array data within
non-suspended sectors. The system can determine
the status of the program operation using the DQ7 or
DQ6 status bits, just as in the standard program oper-
ation. See
Write Operation Status, on page 18 for
more information.
The system may also write the autoselect command
sequence when the device is in the Erase Suspend
mode. The device allows reading autoselect codes
even at addresses within erasing sectors, since the
codes are not stored in the memory array. When the
device exits the autoselect mode, the device reverts to
the Erase Suspend mode, and is ready for another
v a lid oper ation . See
A u to se le ct Co m m a n d
Sequence, on page 14 for more information.
The system must write the Erase Resume command
(address bits are “don’t care”) to exit the erase suspend
mode and continue the sector erase operation. Further
writes of the Resume command are ignored. Another
Erase Suspend command can be written after the
device has resumed erasing.
Notes:
1. See Table 5 on page 17 for erase command sequence.
2. See DQ3: Sector Erase Timer, on page 20 for more infor-
mation.
Figure 4.
Erase Operation
START
Write Erase
Command Sequence
Data Poll
from System
Data = FFh?
No
Yes
Erasure Completed
Embedded
Erase
algorithm
in progress


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 


Datasheet Download



Related Electronics Part Number

Part NumberComponents DescriptionHtml ViewManufacturer
AM29SL400C4 Megabit 512 K x 8-Bit/256 K x 16-Bit CMOS 1.8 Volt-only Super Low Voltage Flash Memory 1 2 3 4 5 MoreAdvanced Micro Devices
AM29SL800D_078 Megabit 1 M x 8-Bit/512 K x 16-Bit CMOS 1.8 Volt-only Super Low Voltage Flash Memory 1 2 3 4 5 MoreAdvanced Micro Devices
AM29SL160C_0716 Megabit 2 M x 8-Bit/1 M x 16-Bit CMOS 1.8 Volt-only Super Low Voltage Flash Memory 1 2 3 4 5 MoreAdvanced Micro Devices
AM41PDS3224D32 Megabit 2 M x 16-Bit CMOS 1.8 Volt-only Simultaneous Operation Page Mode 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
AM29DL400B_054 Megabit 512 K x 8-Bit/256 K x 16-Bit CMOS 3.0 Volt-only Simultaneous Operation Flash Memory 1 2 3 4 5 MoreAdvanced Micro Devices
AM41DL32X4G32 Megabit 4 M x 8-Bit/2 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
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
AM29LV400B_034 Megabit 512 K x 8-Bit/256 K x 16-Bit CMOS 3.0 Volt-only Boot Sector Flash Memory 1 2 3 4 5 MoreAdvanced Micro Devices
AM29F400B_064 Megabit 512 K x 8-Bit/256 K x 16-Bit CMOS 5.0 Volt-only Boot Sector Flash Memory 1 2 3 4 5 MoreAdvanced Micro Devices
AM29DS32XG32 Megabit 4 M x 8-Bit/2 M x 16-Bit CMOS 1.8 Volt-only Simultaneous Operation Flash Memory 1 2 3 4 5 MoreSPANSION

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