IS62WV20488BLL-25MLI-TR ISSI, Integrated Silicon Solution Inc, IS62WV20488BLL-25MLI-TR Datasheet - Page 10

• Manufacturer Part Number: IS62WV20488BLL-25MLI-TR
• Description: IC SRAM 16MBIT 25NS 48MBGA
• Manufacturer: ISSI, Integrated Silicon Solution Inc

Specifications of IS62WV20488BLL-25MLI-TR

• Format - Memory: RAM
• Memory Type: SRAM - Asynchronous
• Memory Size: 16M (2M x 8)
• Speed: 25ns
• Interface: Parallel
• Voltage - Supply: 2.4 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-MBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

IS62WV20488ALL
IS62WV20488BLL
WRITE CYCLE SWITCHING CHARACTERISTICS
Notes:
1. Test conditions assume signal transition times of 5 ns or less, timing reference levels of 0.9V/1.5V, input pulse levels of 0.4 to V
2. The internal write time is defined by the overlap of CS1 LOW, CS2 HIGH and UB or LB, and WE LOW. All signals must be in valid states to initiate a Write, but
3. Tested with the load in Figure 2. Transition is measured ±500 mV from steady-state voltage. Not 100% tested.
4. t
10
AC WAVEFORMS
WRITE CYCLE NO. 1 (CS1/CS2 Controlled, OE = HIGH or LOW)
Symbol
t
t
t
t
t
t
t
t
t
t
output loading specified in Figure 1.
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.
PWE
ADDRESS
WC
AW
HA
SD
HD
HZWE
SCS1/
SA
PWE
LZWE
> t
(4)
(3)
t
(3)
HZWE
DOUT
SCS2
CS1
CS2
DIN
WE
+ t
Parameter
Write Cycle Time
CS1/CS2 to Write End
Address Setup Time to Write End
Address Hold from Write End
Address Setup Time
WE Pulse Width
Data Setup to Write End
Data Hold from Write End
WE LOW to High-Z Output
WE HIGH to Low-Z Output
SD
when OE is LOW.
t
DATA UNDEFINED
SA
Integrated Silicon Solution, Inc. — www.issi.com —
t
AW
t
HZWE
Min.
25
18
18
12
15
—
0
0
5
0
t
t
25 ns
SCS1
SCS2
t
WC
t
PWE
Max.
12
—
—
—
—
—
—
—
—
—
(1,2)
HIGH-Z
(Over Operating Range)
t
SD
DATA-IN VALID
Min.
35
25
25
30
15
—
0
0
0
5
35 ns
Max.
—
—
—
—
—
—
—
—
20
—
t
HA
t
t
LZWE
HD
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
DD
-0.2V/0.4V to V
1-800-379-4774
DD
-0.3V and
01/18/08
Rev. A