IS61LV256-12J ISSI, Integrated Silicon Solution Inc, IS61LV256-12J Datasheet - Page 6

• Manufacturer Part Number: IS61LV256-12J
• Manufacturer: ISSI, Integrated Silicon Solution Inc

Specifications of IS61LV256-12J

• Density: 256Kb
• Access Time (max): 12ns
• Sync/async: Asynchronous
• Architecture: Not Required
• Clock Freq (max): Not RequiredMHz
• Operating Supply Voltage (typ): 3.3V
• Address Bus: 15b
• Package Type: SOJ
• Operating Temp Range: 0C to 70C
• Number Of Ports: 1
• Supply Current: 100mA
• Operating Supply Voltage (min): 3.135V
• Operating Supply Voltage (max): 3.63V
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 28
• Word Size: 8b
• Number Of Words: 32K
• Lead Free Status / Rohs Status: Not Compliant

AC WAVEFORMS
WRITE CYCLE NO. 1
IS61LV256
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
2. The internal write time is defined by the overlap of CE LOW and WE LOW. All signals must be in valid states
3. Tested with the load in Figure 2. Transition is measured ±500 mV from steady-state voltage. Not 100%
6
Symbol Parameter
t
t
t
t
t
t
t
t
t
t
t
levels of 0 to 3.0V and output loading specified in Figure 1.
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.
tested.
HD
WC
SCE
AW
HA
SA
PWE
PWE
SD
HZWE
LZWE
ADDRESS
1
2
(3)
(3)
D
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) 6.5
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
OUT
WE
D
CE
IN
DATA UNDEFINED
t
(CE Controlled, OE is HIGH or LOW)
SA
Min. Max.
6.5
6.5
—
8
0
0
8
5
0
0
-8 ns
3.5
—
—
—
—
—
—
—
—
—
—
Min. Max.
t
10
10
—
8
8
0
0
7
5
0
0
-10 ns
HZWE
t
VALID ADDRESS
AW
t
t
—
—
—
—
—
—
—
—
—
—
4
PWE1
PWE2
t
t
SCE
WC
Min. Max.
12
12
—
8
8
0
0
8
6
0
0
-12 ns
HIGH-Z
(1,2)
Integrated Silicon Solution, Inc. — 1-800-379-4774
—
—
—
—
—
—
—
—
—
—
(1 )
6
t
(Over Operating Range)
SD
DATA
Min. Max.
15
10
10
10
15
—
0
0
7
0
0
-15 ns
IN
VALID
—
—
—
—
—
—
—
—
—
—
7
t
HD
t
LZWE
t
HA
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
CE_WR1.eps
ISSI
06/06/05
Rev. K
®