參數(shù)資料
型號(hào): M12L128168A-7TG
廠商: ELITE SEMICONDUCTOR MEMORY TECHNOLOGY INC
元件分類: DRAM
英文描述: 2M x 16 Bit x 4 Banks Synchronous DRAM
中文描述: 8M X 16 SYNCHRONOUS DRAM, 5.4 ns, PDSO54
封裝: 0.400 INCH, LEAD FREE, TSOP2-54
文件頁數(shù): 16/43頁
文件大?。?/td> 804K
代理商: M12L128168A-7TG
ESMT
BASIC FEATURE AND FUNCTION DESCRIPTIONS
1. CLOCK Suspend
M12L128168A
Elite Semiconductor Memory Technology Inc.
Revision
:
2.0
Publication Date
:
Oct. 2006
16/43
2. DQM Operation
*Note : 1. CKE to CLK disable/enable = 1CLK.
2. DQM masks data out Hi-Z after 2CLKs which should masked by CKE ”L”.
3. DQM masks both data-in and data-out.
CLK
C M D
DQ M
DQ( CL2)
DQ( CL3)
R D
Q0
Q2
Q3
Q1
Q2
Q3
D0
D1
D3
D1
D3
D0
W R
Ma s k e d b y D Q M
Ma s k e d b y D Q M
CLK
C M D
DQ M
DQ( CL2)
DQ( CL3)
CKE
R D
Q0
Q2
Q4
Hi - Z
Hi - Z
Hi - Z
Q6
Q7
Q8
Q5
Q6
Q7
Q1
Q3
Hi - Z
Hi - Z
Hi - Z
Hi - Z
Hi - Z
1 ) W r i t e M a s k ( B L = 4 )
2) R e ad M as k ( B L = 4 )
DQM to Data-in M ask= 0
DQM to Data- out Mask=2
3) D Q M wi t h c l c ok s u s p en d ed ( F u l l P a g e Re ad )
* Not e 2
Internal
CLK
CL K
C MD
C KE
Internal
CLK
D Q(C L 2 )
D Q(C L 3 )
R D
Q2
Q0
Q1
Q3
Q2
Q0
Q1
Q3
D0
D 1
D 2
D 3
D 1
D2
D 3
D 0
W R
Masked b y CKE
1 ) C l o c k S u s p e n d e d D u r i n g W r i t e ( B L =4 )
2 ) C l o c k S u s p e n d e d D u r i n g R e a d ( B L = 4 )
Not W ritten
Suspended Dout
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