K7R643682M SAMSUNG [Samsung semiconductor], K7R643682M Datasheet - Page 15

• Manufacturer Part Number: K7R643682M
• Description: 2Mx36 & 4Mx18 & 8Mx9 QDRTM II b2 SRAM
• Manufacturer: SAMSUNG [Samsung semiconductor]

TIMING WAVE FORMS OF READ, WRITE AND NOP
K7R643682M
K7R641882M
K7R640982M
K
K
SA
W
R
D(Data In)
Q(Data Out)
C
C
CQ
CQ
Note: 1. If address A2=A3, data Q3-1=D2-1, data Q3-2=D2-2.
2.BWx assumed active.
Write data is forwarded immediately as read results.
D2-1
A1
READ
D2-2
A2
WRITE
D4-1
A3
READ
D4-2
A4
2Mx36 & 4Mx18 & 8Mx9 QDR
WRITE
D6-1
A5
Q1-1
READ
- 15 -
D6-2
A6
Q1-2
WRITE
D7-1
Q3-1
NOP
D7-2
A7
Q3-2
WRITE
Q5-1
NOP
Don t Care
TM
Preliminary
II b2 SRAM
Q5-2
Undefined
Oct. 2004
Rev 0.5