• Multiple center power and ground pins for
greater noise immunity
• Easy memory expansion with CE and OE
options
• CE power-down
• Fully static operation: no clock or refresh
required
• TTL compatible inputs and outputs
• Single 3.3V power supply
• Packages available:
– 36-pin 400-mil SOJ
– 36-pin miniBGA
– 44-pin TSOP (Type II)
DESCRIPTION
The ISSI IS61LV5128 is a very high-speed, low power,
524,288-word by 8-bit CMOS static RAM. The IS61LV5128
is fabricated using ISSI's high-performance CMOS technology. This highly reliable process coupled with innovative circuit design techniques, yields higher performance
and low power consumption devices.
When CE is HIGH (deselected), the device assumes a
standby mode at which the power dissipation can be
reduced down to 250 µW (typical) with CMOS input levels.
The IS61LV5128 operates from a single 3.3V power
supply and all inputs are TTL-compatible.
The IS61LV5128 is available in 36-pin 400-mil SOJ, 36pin mini BGA, and 44-pin TSOP (Type II) packages.
Integrated Silicon Solution, Inc. — 1-800-379-4774
Rev. B
07/16/01
IS61LV5128ISSI
®
ABSOLUTE MAXIMUM RATINGS
(1)
SymbolParameterValueUnit
VTERMTerminal Voltage with Respect to GND–0.5 to Vcc + 0.5V
TBIASTemperature Under Bias–55 to +125°C
TSTGStorage Temperature–65 to +150°C
PTPower Dissipation1.0W
Notes:
1. Stress greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at
these or any other conditions above those indicated in the operational sections of this
specification is not implied. Exposure to absolute maximum rating conditions for extended
periods may affect reliability.
OPERATING RANGE
10 ns12 ns, 15 ns
RangeAmbient TemperatureVCCVCC
Commercial0°C to +70°C3.3V +10%, -5%3.3V ± 10%
Industrial–40°C to +85°C3.3V +10%, -5%3.3V ± 10%
CAPACITANCE
(1,2)
SymbolParameterConditionsMax.Unit
CINInput CapacitanceVIN = 0V6pF
CI/OInput/Output CapacitanceVOUT = 0V8pF
Notes:
1. Tested initially and after any design or process changes that may affect these parameters.
2. Test conditions: T
A = 25°C, f = 1 MHz, Vcc = 3.3V.
Integrated Silicon Solution, Inc. — 1-800-379-4774
Rev. B
07/16/01
3
®
IS61LV5128ISSI
DC ELECTRICAL CHARACTERISTICS (Over Operating Range)
Symbol ParameterTest ConditionsMin.Max.Unit
VOHOutput HIGH VoltageVCC = Min., IOH = –4.0 mA2.4—V
MAX, address and data inputs are cycling at the maximum frequency, f = 0 means no input lines change.
4
Integrated Silicon Solution, Inc. — 1-800-379-4774
Rev. B
07/16/01
IS61LV5128ISSI
®
READ CYCLE SWITCHING CHARACTERISTICS
(1)
(Over Operating Range)
-10 ns-12 ns-15 ns
SymbolParameterMin.Max.Min.Max.Min.Max.Unit
tRCRead Cycle Time10—12—15—ns
tAAAddress Access Time—10—12—15ns
tOHAOutput Hold Time3—3—3—ns
tACECE Access Time—10—12—15ns
tDOEOE Access Time—4—5—7ns
(2)
tLZOE
tHZOE
tLZCE
tHZCE
(2)
(2)
(2)
OE to Low-Z Output0—0—0—ns
OE to High-Z Output040506ns
CE to Low-Z Output3—3—3—ns
CE to High-Z Output040608ns
tPUPower Up Time0—0—0—ns
tPDPower Down Time—10—12—15ns
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
output loading specified in Figure 1.
2. Tested with the load in Figure 2. Transition is measured ±500 mV from steady-state voltage. Not 100% tested.
AC TEST CONDITIONS
ParameterUnit
Input Pulse Level0V to 3.0V
Input Rise and Fall Times3 ns
Input and Output Timing1.5V
and Reference Levels
Output LoadSee Figures 1 and 2
AC TEST LOADS
319 Ω
3.3V
OUTPUT
30 pF
Including
jig and
scope
353 Ω
3.3V
OUTPUT
5 pF
Including
jig and
scope
319 Ω
353 Ω
Figure 1Figure 2
Integrated Silicon Solution, Inc. — 1-800-379-4774
Rev. B
07/16/01
5
IS61LV5128ISSI
AC WAVEFORMS
(1,2)
READ CYCLE NO. 1
ADDRESS
(Address Controlled) (CE = OE = VIL)
t RC
®
D
OUT
READ CYCLE NO. 2
ADDRESS
OE
CE
t
LZCE
D
OUT
HIGH-Z
PREVIOUS DATA VALID
(1,3)
(CE and OE Controlled)
t
AA
t
DOE
t
LZOE
t
ACE
t OHA
t
RC
t AA
DATA VALID
DATA VALID
t
HZCE
t OHA
t
OHA
t
READ1.eps
HZOE
CE_RD2.eps
Notes:
1. WE is HIGH for a Read Cycle.
2. The device is continuously selected. OE, CE = V
3. Address is valid prior to or coincident with CE LOW transitions.
IL.
6
Integrated Silicon Solution, Inc. — 1-800-379-4774
Rev. B
07/16/01
IS61LV5128ISSI
®
WRITE CYCLE SWITCHING CHARACTERISTICS
(1,3)
(Over Operating Range)
-10 ns-12 ns-15 ns
SymbolParameterMin.Max.Min.Max.Min.Max.Unit
tWCWrite Cycle Time10—12—15—ns
tSCECE to Write End8—9—10—ns
tAWAddress Setup Time to8—9—10—ns
Write End
tHAAddress Hold from0—0—0—ns
Write End
tSAAddress Setup Time0—0—0—ns
(4)
tPWE1
WE Pulse Width8—8—10—ns
tPWE2WE Pulse Width (OE = LOW)10—12—12—ns
tSDData Setup to Write End6—6—7—ns
tHDData Hold from Write End0—0—0—ns
(2)
tHZWE
(2)
tLZWE
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
output loading specified in Figure 1.
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, 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.
4. Tested with OE HIGH.
WE LOW to High-Z Output050607ns
WE HIGH to Low-Z Output0—0—0—ns
AC WAVEFORMS
WRITE CYCLE NO. 1
ADDRESS
CE
WE
D
OUT
D
IN
(1,2)
(CE Controlled, OE = HIGH or LOW)
t
VALID ADDRESS
t
SA
t
DATA UNDEFINED
t
AW
HZWE
t
PWE1
t
PWE2
t
WC
SCE
HIGH-Z
t
SD
DATAIN VALID
t
t
HD
t
LZWE
HA
CE_WR1.eps
Integrated Silicon Solution, Inc. — 1-800-379-4774
Rev. B
07/16/01
7
IS61LV5128ISSI
®
WRITE CYCLE NO. 2
ADDRESS
(1,2)
(WE Controlled: OE is HIGH During Write Cycle)
t
WC
VALID ADDRESS
t
HA
OE
CE
LOW
t
AW
t
PWE1
WE
t
SA
D
OUT
D
IN
DATA UNDEFINED
Notes:
1. 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, 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.
2. I/O will assume the High-Z state if OE • V
IH.
t
HZWE
HIGH-Z
t
SD
DATAIN VALID
t
LZWE
t
HD
CE_WR2.eps
WRITE CYCLE NO. 3 (WE Controlled: OE is LOW During Write Cycle)
t
WC
ADDRESS
OE
CE
WE
OUT
D
D
IN
LOW
LOW
t
SA
DATA UNDEFINED
VALID ADDRESS
t
AW
t
PWE2
t
HZWE
HIGH-Z
t
SD
DATAIN VALID
t
HA
t
LZWE
t
HD
CE_WR3.eps
8
Integrated Silicon Solution, Inc. — 1-800-379-4774