Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

AT25DF041A-MH-Y Datasheet(PDF) 9 Page - ATMEL Corporation

Part # AT25DF041A-MH-Y
Description  4-megabit 2.3-volt or 2.7-volt Minimum SPI Serial Flash Memory
Download  41 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT25DF041A-MH-Y Datasheet(HTML) 9 Page - ATMEL Corporation

Back Button AT25DF041A-MH-Y Datasheet HTML 5Page - ATMEL Corporation AT25DF041A-MH-Y Datasheet HTML 6Page - ATMEL Corporation AT25DF041A-MH-Y Datasheet HTML 7Page - ATMEL Corporation AT25DF041A-MH-Y Datasheet HTML 8Page - ATMEL Corporation AT25DF041A-MH-Y Datasheet HTML 9Page - ATMEL Corporation AT25DF041A-MH-Y Datasheet HTML 10Page - ATMEL Corporation AT25DF041A-MH-Y Datasheet HTML 11Page - ATMEL Corporation AT25DF041A-MH-Y Datasheet HTML 12Page - ATMEL Corporation AT25DF041A-MH-Y Datasheet HTML 13Page - ATMEL Corporation Next Button
Zoom Inzoom in Zoom Outzoom out
 9 / 41 page
background image
9
3668D–DFLASH–9/08
AT25DF041A
8.
Program and Erase Commands
8.1
Byte/Page Program
The Byte/Page Program command allows anywhere from a single byte of data to 256 bytes of
data to be programmed into previously erased memory locations. An erased memory location is
one that has all eight bits set to the logical “1” state (a byte value of FFh). Before a Byte/Page
Program command can be started, the Write Enable command must have been previously
issued to the device (see “Write Enable” on page 15 command description) to set the Write
Enable Latch (WEL) bit of the Status Register to a logical “1” state.
To perform a Byte/Page Program command, an opcode of 02h must be clocked into the device
followed by the three address bytes denoting the first byte location of the memory array to begin
programming at. After the address bytes have been clocked in, data can then be clocked into the
device and will be stored in an internal buffer.
If the starting memory address denoted by A23 - A0 does not fall on an even 256-byte page
boundary (A7 - A0 are not all 0’s), then special circumstances regarding which memory locations
will be programmed will apply. In this situation, any data that is sent to the device that goes
beyond the end of the page will wrap around back to the beginning of the same page. For exam-
ple, if the starting address denoted by A23 - A0 is 0000FEh, and three bytes of data are sent to
the device, then the first two bytes of data will be programmed at addresses 0000FEh and
0000FFh while the last byte of data will be programmed at address 000000h. The remaining
bytes in the page (addresses 000001h through 0000FDh) will be unaffected and will not change.
In addition, if more than 256 bytes of data are sent to the device, then only the last 256 bytes
sent will be latched into the internal buffer.
When the CS pin is deasserted, the device will take the data stored in the internal buffer and pro-
gram it into the appropriate memory array locations based on the starting address specified by
A23 - A0 and the number of data bytes sent to the device. If less than 256 bytes of data were
sent to the device, then the remaining bytes within the page will not be altered. The program-
ming of the data bytes is internally self-timed and should take place in a time of t
PP.
The three address bytes and at least one complete byte of data must be clocked into the device
before the CS pin is deasserted, and the CS pin must be deasserted on even byte boundaries
(multiples of eight bits); otherwise, the device will abort the operation and no data will be pro-
grammed into the memory array. In addition, if the address specified by A23 - A0 points to a
memory location within a sector that is in the protected state (see section “Protect Sector” on
page 16), then the Byte/Page Program command will not be executed, and the device will return
to the idle state once the CS pin has been deasserted. The WEL bit in the Status Register will be
reset back to the logical “0” state if the program cycle aborts due to an incomplete address being
sent, an incomplete byte of data being sent, or because the memory location to be programmed
is protected.
While the device is programming, the Status Register can be read and will indicate that the
device is busy. For faster throughput, it is recommended that the Status Register be polled
rather than waiting the t
BP or tPP time to determine if the data bytes have finished programming.
At some point before the program cycle completes, the WEL bit in the Status Register will be
reset back to the logical “0” state.
The device also incorporates an intelligent programming algorithm that can detect when a byte
location fails to program properly. If a programming error arises, it will be indicated by the EPE
bit in the Status Register.


Similar Part No. - AT25DF041A-MH-Y

ManufacturerPart #DatasheetDescription
logo
ATMEL Corporation
AT25DF041A-MH-Y ATMEL-AT25DF041A-MH-Y Datasheet
869Kb / 41P
   4-megabit 2.3-volt or 2.7volt Minimum SPI Serial Flash Memory
logo
List of Unclassifed Man...
AT25DF041A-MH-Y ETC2-AT25DF041A-MH-Y Datasheet
746Kb / 42P
   Minimum SPI Serial Flash Memory
More results

Similar Description - AT25DF041A-MH-Y

ManufacturerPart #DatasheetDescription
logo
ATMEL Corporation
AT25DF021 ATMEL-AT25DF021_09 Datasheet
972Kb / 41P
   2-Megabit 2.3-volt or 2.7-volt Minimum SPI Serial Flash Memory
AT25DF021 ATMEL-AT25DF021 Datasheet
347Kb / 16P
   2-Megabit 2.3-volt or 2.7-volt Minimum SPI Serial Flash Memory
AT25DF041A ATMEL-AT25DF041A_09 Datasheet
869Kb / 41P
   4-megabit 2.3-volt or 2.7volt Minimum SPI Serial Flash Memory
AT25DF641 ATMEL-AT25DF641 Datasheet
1Mb / 59P
   64-Megabit 2.7-volt Minimum SPI Serial Flash Memory
AT26DF081A ATMEL-AT26DF081A_09 Datasheet
850Kb / 40P
   8-megabit 2.7-volt Minimum SPI Serial Flash Memory
AT25DF321A ATMEL-AT25DF321A Datasheet
1Mb / 58P
   32-Megabit 2.7-volt Minimum SPI Serial Flash Memory
AT25DF321 ATMEL-AT25DF321_09 Datasheet
842Kb / 37P
   32-megabit 2.7-volt Minimum SPI Serial Flash Memory
AT25DF161 ATMEL-AT25DF161 Datasheet
1Mb / 60P
   16-Megabit 2.7-volt Minimum SPI Serial Flash Memory
logo
List of Unclassifed Man...
AT25DF021 ETC2-AT25DF021_12 Datasheet
914Kb / 41P
   2-Megabit 2.3Volt or 2.7-Volt Minimum SPI Serial Falsh Memory
logo
ATMEL Corporation
AT25DF081 ATMEL-AT25DF081 Datasheet
784Kb / 38P
   8-megabit 1.65-volt Minimum SPI Serial Flash Memory
More results


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

Go To PDF Page


Link URL




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

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   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
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com