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參數(shù)資料
| 型號： | K9K1G08U0M-YCB0 |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | 128M x 8 Bit NAND Flash Memory |
| 中文描述： | 128M的× 8位NAND閃存 |
| 文件頁數(shù)： | 25/37頁 |
| 文件大?。?/td> | 467K |
| 代理商： | K9K1G08U0M-YCB0 |
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K9K1G08U0M-YCB0, K9K1G08U0M-YIB0
FLASH MEMORY
25
Device Operation
PAGE READ
Upon initial device power up, the device defaults to Read1 mode. This operation is also initiated by writing 00h to the command reg-
ister along with four address cycles. Once the command is latched, it does not need to be written for the following page read opera-
tion. Three types of operations are available : random read, serial page read and sequential row read.
The random read mode is enabled when the page address is changed. The 528 bytes of data within the selected page are trans-
ferred to the data registers in less than 12
μ
s(t
R
). The system controller can detect the completion of this data transfer(tR) by analyz-
ing the output of R/B pin. Once the data in a page is loaded into the registers, they may be read out in 50ns cycle time by sequentially
pulsing RE. High to low transitions of the RE clock output the data stating from the selected column address up to the last column
address.
After the data of last column address is clocked out, the next page is automatically selected for sequential row read.
Waiting 12
μ
s again allows reading the selected page. The sequential row read operation is terminated by bringing CE high. The way
the Read1 and Read2 commands work is like a pointer set to either the main area or the spare area. The spare area of bytes 512 to
527 may be selectively accessed by writing the Read2 command. Addresses A
0
to A
3
set the starting address of the spare area while
addresses A
4
to A
7
are ignored. Unless the operation is aborted, the page address is automatically incremented for sequential row
read as in Read1 operation and spare sixteen bytes of each page may be sequentially read. The Read1 command(00h/01h) is
needed to move the pointer back to the main area. Figures 8 to 11 show typical sequence and timings for each read operation.
Figure 8. Read1 Operation
Start Add.(4Cycle)
00h
A
0
~ A
7
& A
9
~ A
26
Data Output(Sequential)
(00h Command)
Data Field
Spare Field
CE
CLE
ALE
R/B
WE
I/O
0
~
7
RE
t
R
* After data access on 2nd half array by 01h command, the start pointer is automatically moved to 1st half
array (00h) at next cycle.
(01h Command)*
Data Field
Spare Field
1st half array
2st half array
1st half array
2st half array
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|---|---|
| K9K1G08U0M-YIB0 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:nand flash |
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