參數(shù)資料
型號(hào)： K7R640982M
廠商： SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述： 2Mx36 & 4Mx18 & 8Mx9 QDRTM II b2 SRAM
中文描述： 2Mx36
文件頁(yè)數(shù)： 9/19頁(yè)
文件大?。?/td> 364K
代理商： K7R640982M
2Mx36 & 4Mx18 & 8Mx9 QDR
TM
II b2 SRAM
- 9 -
Rev 0.5
Oct. 2004
Preliminary
K7R643682M
K7R641882M
K7R640982M
WRITE TRUTH TABLE
(x18)
Notes:
1. X means "Don
′
t Care".
2. All inputs in this table must meet setup and hold time around the rising edge of input clock K or K (
↑
).
3. Assumes a WRITE cycle was initiated.
4. This table illustates operation for x18 devices. x9 device operation is similar except that
BW
controls D0:D8.
K
K
BW
0
BW
1
OPERATION
↑
L
L
WRITE ALL BYTEs ( K
↑
)
WRITE ALL BYTEs ( K
↑
)
WRITE BYTE 0 ( K
↑
)
WRITE BYTE 0 ( K
↑
)
WRITE BYTE 1 ( K
↑
)
WRITE BYTE 1 ( K
↑
)
WRITE NOTHING ( K
↑
)
↑
L
L
↑
L
H
↑
L
H
↑
H
L
↑
H
L
↑
H
H
↑
H
H
WRITE NOTHING ( K
↑
)
WRITE TRUTH TABLE
(x36)
Notes:
1. X means "Don
′
t Care".
2. All inputs in this table must meet setup and hold time around the rising edge of input clock K or K (
↑
).
3. Assumes a WRITE cycle was initiated.
K
K
BW
0
BW
1
BW
2
BW
3
OPERATION
↑
L
L
L
L
WRITE ALL BYTEs ( K
↑
)
WRITE ALL BYTEs ( K
↑
)
WRITE BYTE 0 ( K
↑
)
WRITE BYTE 0 ( K
↑
)
↑
L
L
L
L
↑
L
H
H
H
↑
L
H
H
H
↑
H
L
H
H
WRITE BYTE 1 ( K
↑
)
WRITE BYTE 1 ( K
↑
)
WRITE BYTE 2 and BYTE 3 ( K
↑
)
WRITE BYTE 2 and BYTE 3 ( K
↑
)
WRITE NOTHING ( K
↑
)
WRITE NOTHING ( K
↑
)
↑
H
L
H
H
↑
H
H
L
L
↑
H
H
L
L
↑
H
H
H
H
↑
H
H
H
H
TRUTH TABLES
SYNCHRONOUS TRUTH TABLE
Notes:
1. X means "Don
′
t Care".
2. The rising edge of clock is symbolized by (
↑
).
3. Before enter into clock stop status, all pending read and write operations will be completed.
K
R
W
D
Q
OPERATION
D(A0)
D(A1)
Q(A0)
Q(A1)
Stopped
X
X
Previous state
Previous state
Previous state
Previous state
Clock Stop
↑
H
H
X
X
High-Z
High-Z
No Operation
↑
L
X
X
X
D
OUT
at C(t+1)
D
OUT
at C(t+2)
Read
↑
X
L
Din at K(t)
Din at K(t)
X
X
Write
相關(guān)PDF資料
PDF描述
K7R641882M Electrical, Duct/Raceway (Trunking); RoHS Compliant: Yes
K7R643682M 2Mx36 & 4Mx18 & 8Mx9 QDRTM II b2 SRAM
K7R641884M 2Mx36 & 4Mx18 QDRTM II b4 SRAM
K7R643684M 2Mx36 & 4Mx18 QDRTM II b4 SRAM
K7 KS SERIES KEY SWITCHES
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