์ „์ž๋ถ€ํ’ˆ ๋ฐ์ดํ„ฐ์‹œํŠธ ๊ฒ€์ƒ‰์—”์ง„
  Korean  โ–ผ

Delete All
ON OFF
ALLDATASHEET.CO.KR

X  

Preview PDF Download HTML

S71AL016M ๋ฐ์ดํ„ฐ์‹œํŠธ(HTML) 31 Page - SPANSION

๋ถ€ํ’ˆ๋ช… S71AL016M
์ƒ์„ธ๋‚ด์šฉ  Stacked Multi-Chip Product (MCP) Flash Memory and RAM
Download  68 Pages
Scroll/Zoom Zoom In 100% Zoom Out
์ œ์กฐ์‚ฌ  SPANSION [SPANSION]
ํ™ˆํŽ˜์ด์ง€  http://www.spansion.com
Logo 

S71AL016M ๋ฐ์ดํ„ฐ์‹œํŠธ(HTML) 31 Page - SPANSION

Zoom Inzoom in Zoom Outzoom out
/ 68 page
 31 / 68 page
background image
February 23, 2005 S71AL016M_M0_A0
S71AL016M
31
Advanc e
Informatio n
Word Program Command Sequence
Programming is a four-bus-cycle operation. The program command sequence is
initiated by writing two unlock write cycles, followed by the program set-up
command. The program address and data are written next, which in turn initiate
the Embedded Program algorithm. The system is not required to provide further
controls or timings. The device automatically generates the program pulses and
verifies the programmed cell margin. Tables 10โ€“11 show the address and data
requirements for the program command sequence. Note that the SecSi Sector,
autoselect, and CFI functions are unavailable when a program operation is in
progress.
When the Embedded Program algorithm is complete, the device then returns to
reading array data and addresses are no longer latched. The system can deter-
mine the status of the program operation by using DQ7, DQ6, or RY/BY#. See
Write Operation Status on page 38 for information on these status bits.
Any commands written to the device during the Embedded Program Algorithm
are ignored. Note that a hardware reset immediately terminates the program-
ming operation. The Program command sequence should be reinitiated once the
device resets to reading array data, to ensure data integrity.
Programming is allowed in any sequence and across sector boundaries. Pro-
gramming to the same address multiple times without intervening erases is
limited. For such application requirements, please contact your local Spansion
representative. Any bit in a word or byte cannot be programmed from 0
back to a 1. Attempting to do so may halt the operation and set DQ5 to โ€œ1,โ€ or
cause the Data# Polling algorithm to indicate the operation was successful.
However, a succeeding read shows that the data is still 0. Only erase operations
can convert a 0 to a 1.
Unlock Bypass Command Sequence
The unlock bypass feature allows the system to program words to the device
faster than using the standard program command sequence. The unlock bypass
command sequence is initiated by first writing two unlock cycles. This is followed
by a third write cycle containing the unlock bypass command, 20h. The device
then enters the unlock bypass mode. A two-cycle unlock bypass program com-
mand sequence is all that is required to program in this mode. The first cycle in
this sequence contains the unlock bypass program command, A0h; the second
cycle contains the program address and data. Additional data is programmed in
the same manner. This mode dispenses with the initial two unlock cycles re-
quired in the standard program command sequence, resulting in faster total
programming time. Table 10 on page 37 and Table 11 on page 43 show the re-
quirements for the command sequence.
During the unlock bypass mode, only the Unlock Bypass Program and Unlock
Bypass Reset commands are valid. To exit the unlock bypass mode, the system
must issue the two-cycle unlock bypass reset command sequence. The first
cycle must contain the data 90h; the second cycle the data 00h. Addresses are
donโ€™t care for both cycles. The device then returns to reading array data.
Figure 4, on page 32 illustrates the algorithm for the program operation. See
Table 18 on page 57 for parameters, and to Figure 17, on page 55 for timing
diagrams.


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  63  64  65  66  67  68 


๋ฐ์ดํ„ฐ์‹œํŠธ Download




๋งํฌ URL



Privacy Policy
ALLDATASHEET.CO.KR
ALLDATASHEET ๊ฐ€ ๊ท€ํ•˜์— ๋„์›€์ด ๋˜์…จ๋‚˜์š”?  [ DONATE ]  

Alldatasheet๋Š”?   |   ๊ด‘๊ณ ๋ฌธ์˜    |   ์šด์˜์ž์—๊ฒŒ ์—ฐ๋ฝํ•˜๊ธฐ   |   ๊ฐœ์ธ์ •๋ณด์ทจ๊ธ‰๋ฐฉ์นจ   |   ์ฆ๊ฒจ์ฐพ๊ธฐ   |   ๋งํฌ๊ตํ™˜   |   ์ œ์กฐ์‚ฌ๋ณ„ ๊ฒ€์ƒ‰
All Rights Reservedยฉ 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