IS62LV256-70TI ISSI, Integrated Silicon Solution Inc, IS62LV256-70TI Datasheet - Page 7

• Manufacturer Part Number: IS62LV256-70TI
• Description: SRAM 256K 32Kx8 70ns 3.3v
• Manufacturer: ISSI, Integrated Silicon Solution Inc
• Type: Asynchronousr

Specifications of IS62LV256-70TI

• Density: 256Kb
• Access Time (max): 70ns
• Sync/async: Asynchronous
• Architecture: Not Required
• Clock Freq (max): Not RequiredMHz
• Operating Supply Voltage (typ): 3.3V
• Address Bus: 15b
• Package Type: TSOP-I
• Operating Temp Range: -40C to 85C
• Number Of Ports: 1
• Supply Current: 30mA
• Operating Supply Voltage (min): 3.135V
• Operating Supply Voltage (max): 3.465V
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 28
• Word Size: 8b
• Number Of Words: 32K
• Memory Size: 256 Kbit
• Access Time: 70 ns
• Package / Case: TSOP I-28
• Supply Voltage (max): 3.465 V
• Supply Voltage (min): 3.135 V
• Maximum Operating Current: 30 mA
• Organization: 32 K x 8
• Interface: TTL
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Operating Supply Voltage: 3.3 V
• Lead Free Status / Rohs Status: Not Compliant

AC WAVEFORMS
WRITE CYCLE NO. 1 (WE Controlled)
IS65LV256AL
IS62LV256AL
Integrated Silicon Solution, Inc. — www.issi.com —
Rev. B
10/23/06
WRITE CYCLE SWITCHING CHARACTERISTICS
Notes:
1. Test conditions assume signal transition times of 3 ns or less, timing reference levels of 1.5V, input pulse levels of 0 to 3.0V and
2. Tested with the load in Figure 2. Transition is measured ±500 mV from steady-state voltage. Not 100% tested.
3. The internal write time is defined by the overlap of CE LOW and WE LOW. All signals must be in valid states to initiate a Write,
4. Tested with OE HIGH.
Symbol
t
t
t
t
t
t
t
t
t
t
output loading specified in Figure 1.
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
sd
hd
hzwe
lzwe
(4)
(2)
ADDRESS
(2)
D
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
Data Setup to Write End
Data Hold from Write End
WE LOW to High-Z Output
WE HIGH to Low-Z Output
OUT
WE
D
CE
IN
t
DATA UNDEFINED
SA
(1,2)
t
AW
t
HZWE
Min.
t
1-800-379-4774
SCE
20
15
14
14
13
—
0
0
0
0
-20 ns
t
WC
t
PWE
HIGH-Z
(1,3)
Max.
—
—
—
—
—
—
—
—
—
8
(Over Operating Range)
t
SD
DATA-IN VALID
Min.
45
35
25
25
20
—
0
0
0
0
-45 ns
t
HA
t
t
LZWE
HD
Max.
—
—
—
—
—
—
—
—
20
—
Unit
ns
ns
ns
ns
ns
ns
ns
n s
ns
ns
7