km641001a Samsung Semiconductor, Inc., km641001a Datasheet - Page 5

• Manufacturer Part Number: km641001a
• Description: 256kx 4 High Speed Static Ram 5v Operating , Evolutionary Pin Out Operated At Commercial Temperature Range
• Manufacturer: Samsung Semiconductor, Inc.

WRITE CYCLE
TIMMING DIAGRAMS
KM641001A
Write Cycle Time
Chip Select to End of Write
Address Set-up Time
Address Valid to End of Write
Write Pulse Width(OE High)
Write Pulse Width(OE Low)
Write Recovery Time
Write to Output High-Z
Data to Write Time Overlap
Data Hold from Write Time
End Write to Output Low-Z
TIMING WAVEFORM OF READ CYCLE(1)
TIMING WAVEFORM OF READ CYCLE(2)
Address
Data Out
Address
CS
OE
Data out
V
Current
CC
Parameter
I
I
CC
SB
Previous Valid Data
Symbol
t
t
t
PU
t
t
t
t
t
t
t
WP1
WHZ
t
t
t
OW
WC
CW
AW
WP
WR
DW
LZ(4,5)
AS
DH
(Address Controlled
(WE=V
t
OLZ
t
OH
50%
t
AA
IH
)
t
CO
- 5 -
t
OE
t
AA
Min
15
10
10
10
15
0
0
0
7
0
3
KM641001A-15
,
CS=OE=V
t
RC
t
RC
IL
Max
, WE=V
8
-
-
-
-
-
-
-
-
-
-
Valid Data
IH
)
Min
20
12
12
12
20
0
0
0
9
0
3
KM641001A-20
Valid Data
CMOS SRAM
t
t
t
HZ(3,4,5)
OHZ
OH
50%
t
PD
PRELIMINARY
Max
10
-
-
-
-
-
-
-
-
-
-
February 1998
Rev 5.0
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns