IS64WV20488 Integrated Silicon Solution, Inc., IS64WV20488 Datasheet - Page 12

• Manufacturer Part Number: IS64WV20488
• Description: 2m X 8 High-speed Cmos Static Ram
• Manufacturer: Integrated Silicon Solution, Inc.

IS61WV20488ALL
IS61WV20488BLL
IS64WV20488BLL
WRITE CYCLE SWITCHING CHARACTERISTICS
Notes:
1. Test conditions assume signal transition times of 1.5ns or less, timing reference levels of 1.25V,
2. Tested with the load in Figure 2. Transition is measured ±500 mV from steady-state voltage. Not
3. The internal write time is defined by the overlap of CE LOW and WE LOW. All signals must be in
12
Symbol
t
t
t
t
t
t
t
t
t
t
t
input pulse levels of 0.4V to V
100% tested.
valid states to initiate a Write, but any one can go inactive to terminate the Write. The Data Input
Setup and Hold timing are referenced to the rising or falling edge of the signal that terminates the
write.
WC
SCE
AW
HA
SA
PWE
PWE
SD
HD
HZWE
LZWE
1
2
(3)
(3)
Parameter
Write Cycle Time
CE to Write End
Address Setup Time
to Write End
Address Hold from Write End
Address Setup Time
WE Pulse Width (OE = HIGH)
WE Pulse Width (OE = LOW)
Data Setup to Write End
Data Hold from Write End
WE LOW to High-Z Output
WE HIGH to Low-Z Output
DD
-0.3V and output loading specified in Figure 1.
Integrated Silicon Solution, Inc. — www.issi.com —
Min.
20
12
12
12
17
—
0
0
3
0
9
-20 ns
(1,2)
Max.
—
—
—
—
—
—
—
—
—
—
9
(Over Operating Range)
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ISSI
1-800-379-4774
08/25/06
Rev. A
®