DS1248 Datasheet, PDF (8/21 Pages) Dallas Semiconductor – 1024k NV SRAM with Phantom Clock

DS1248/DS1248P
ABSOLUTE MAXIMUM RATINGS*
Voltage Range on Any Pin Relative to Ground
-0.3V to +6.0V
Storage Temperature Range
-40ºC to +85ºC
Soldering Temperature Range
+260°C for 10 seconds (DIP) (Note 13)
See IPC/JEDEC Standard J-STD-020A for
Surface Mount Devices
OPERATING RANGE
RANGE
Commercial
TEMP. RANGE (ºC)
V_CC (V)
0 to +70
3.3 ± 10% or 5 ± 10%
Industrial
-40 to +85
3.3 ± 10% or 5 ± 10%
* This is a stress rating only and functional operation of the device at these or any other conditions
beyond those indicated in the operation sections of this specification is not implied. Exposure to
absolute maximum rating conditions for extended periods of time can affect reliability.
RECOMMENDED DC OPERATING CONDITIONS
PARAMETER
SYMBOL MIN TYP
V_CC = 5V ± 10%
2.2
Logic 1 _{VCC = 3.3V ± 10%}
V_IH
2.0
V_CC = 5V ± 10%
-0.3
Logic 0 _{VCC = 3.3V ± 10%}
V_IL
-0.3
Over the operating range
MAX
UNITS NOTES
V_CC + 0.3V
V
11
V_CC + 0.3V
0.8
V
11
0.6
DC ELECTRICAL CHARACTERISTICS
PARAMETER
Input Leakage Current
I/O Leakage Current
CE ³ V_IH ≤ V_CC
Output Current @ 2.4V
Output Current @ 0.4V
Standby Current CE = 2.2V
SYMBOL
I_IL
I_IO
MIN
-1.0
-1.0
I_OH
-1.0
I_OL
2.0
I_CCS1
Standby Current
CE = V_CC - 0.5V
Operating Current t_CYC = 70ns
I_CCS2
I_CC01
Write Protection Voltage
V_PF
4.25
Battery Switchover Voltage
V_SO
Over the operating range (5V)
TYP MAX UNITS NOTES
+1.0
mA
12
+1.0
mA
mA
mA
5
10
mA
3.0
5.0
mA
85
mA
4.37
4.50
V
11
V_BAT
V
11
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