SRV31-SRV34
White Electronic Designs
ABSOLUTE MAXIMUM RATINGS2
Notes: 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
at these or any other conditions greater than 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 Temperature TA (ambient)
Commercial
Industrial
0°C to +60 °C
-40°C to +85 °C
Storage Temperature
Commercial
0°C to +60 °C
Industrial
-40°C to +85 °C
-0.5V to VCC+0.5V (1)
-0.5V to +7.0V
Voltage on any pin relative to VSS
VCC supply Voltage relative to VSS
DC CHARACTERISTICS1
CMOS Test Conditions: VIL = VSS ± 0.2V, VIH = 5V ± 0.2V, VCC = 3.3V or 5V
Sym
Parameter
Density
Notes
Min
Typ(3)
Max
Units
Test Conditions
ICC
VCC Active Current
All
1
25
mA
VCC = 5.25V
tcycle = 150ns
ICCS
ILI
VCC Standby Current
Input Leakage Current
Output Leakage Current
Input Low Voltage
All
All
All
All
All
2,4!
5,6
6
< 1
10
mA
μA
μA
V
VCC = 5.25V
Control Signals = VCC
VCC = VCC MAX
VIN =VCC or VSS
VCC = VCC MAX
VOUT =VCC or VSS
VCC = 3V
VCC = 5.25V
VCC = 3V
±20
±20
ILO
VIL
VIH
6
0.9
1.6
VCC +0.5
VCC +0.5
Input High Voltage
6
2.1
3.85
V
VCC = 5.25V
VOL
VOH
Output Low Voltage
Output High Voltage
All
All
6
6
0.4
V
V
IOL = 3.2mA
IOH = -2.0mA
2.4
2.8
Notes:
1. All currents are for x16 mode and are RMS values unless otherwise specified.
2. Control Signals: CE1#, CE2#, OE#, WE#, REG#.
3. Typical: VCC = 5V, T = +25C.
4. ICCS includes battery recharge current. Value depends on battery discharge level. ICCS min is specified for fully charged battery.
CCS typical value is specified for battery discharge to 2.7V. ICCS max is specified for a fully discharged battery (0V). Battery will recharge to 1.5V in 20 sec.
I
5. Values are the same for byte and word wide modes for all card densities.
6. Exceptions: Leakage currents on CE1#, CE2#, OE#, REG# and WE# will be < 500 μA when VIN = GND due to internal pull-up resistors
BATTERY CHARACTERISTICS
SRV31-34
Parameter
Battery Life
Density
All
Notes
(1)
Type I
Type II
Units
years
Conditions
Normal operation, T=25C
min 10
2MB
4MB
8MB
12MB
16MB
(2)
18
18
12
10
9
40
40
30
25
20
Battery backup time is a calculated value and is not
guaranteed. This should not be used to schedule battery
recharging. (Temp 25°C)
Battery
Backup Time
months
(typical)
Notes:
1. Battery Life refers to functional lifetime of battery.
2. Battery backup time is density and temperature dependent.
February 2007
Rev. 1
6
White Electronic Designs Corporation • (602) 437-1520 • www.whiteedc.com
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