k7r321882c Samsung Semiconductor, Inc., k7r321882c Datasheet - Page 10

• Manufacturer Part Number: k7r321882c
• Description: 1mx36-bit, 2mx18-bit, 4mx9-bit Qdrtm Ii B2 Sram
• Manufacturer: Samsung Semiconductor, Inc.

K7R323682C
K7R320982C
WRITE TRUTH TABLE
Notes: 1. X means “Don′t Care”.
K7R321882C
TRUTH TABLES
SYNCHRONOUS TRUTH TABLE
Notes: 1. X means “Don′t Care”.
WRITE TRUTH TABLE
Notes: 1. X means “Don′t Care”.
Stopped
K
↑
↑
↑
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.
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.
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 illustrates operation for x18 devices. x9 device operation is similar except that
K
↑
↑
↑
↑
↑
K
↑
↑
↑
↑
R
X
H
X
L
K
↑
↑
↑
↑
↑
W
X
H
X
(x18)
L
(x36)
K
↑
↑
↑
↑
BW
Previous state
H
H
H
H
H
H
L
L
L
L
Din at K(t)
0
D(A0)
X
X
BW
H
H
H
H
H
H
L
L
L
L
D
1Mx36 & 2Mx18 & 4Mx9 QDR
BW
1
H
H
H
H
L
L
L
L
Previous state
0
Din at K(t)
D(A1)
X
X
- 10 -
BW
H
H
H
H
H
H
L
L
L
L
2
BW
D
Previous state
H
H
H
H
L
L
L
L
OUT
1
BW
High-Z
Q(A0)
H
H
H
H
H
H
L
L
L
L
at C(t+1)
X
3
BW
controls D0:D8.
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↑)
WRITE NOTHING ( K↑)
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 BYTE 2 and BYTE 3 ( K↑ )
WRITE BYTE 2 and BYTE 3 ( K↑ )
WRITE NOTHING ( K↑)
WRITE NOTHING ( K↑ )
Q
Rev. 1.1 August 2006
D
Previous state
OUT
High-Z
Q(A1)
at C(t+2)
OPERATION
X
OPERATION
TM
II b2 SRAM
No Operation
OPERATION
Clock Stop
Read
Write