DS2045W Datasheet, PDF (7/12 Pages) Maxim Integrated Products – 3.3V Single-Piece 1Mb Nonvolatile SRAM

DS2045W 3.3V Single-Piece 1Mb
Nonvolatile SRAM
(V_CC = +3.3V, T_A = +25°C, unless otherwise noted.)
Typical Operating Characteristics
SUPPLY CURRENT
vs. OPERATING FREQUENCY
20
18 ^{TA = +25°C}
16
5MHz 100% DUTY CYCLE
14
12
10
5MHz 50% DUTY CYCLE
8
6
4
1MHz 100% DUTY CYCLE
2
1MHz 50% DUTY CYCLE
0
3.0 3.1 3.2 3.3 3.4 3.5 3.6
V_CC (V)
V_CHRG PERCENT CHANGE
vs. TEMPERATURE
0.5
0.4
V_CC = 3.3V
V_BAT = V_CHRG
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
-0.4
-0.5
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80
TEMPERATURE (°C)
DQ V_OL vs. DQ I_OL
0.4
V_CC = 3.3V
0.3
0.2
0.1
0
0
1
2
3
4
5
I_OL (mA)
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
180
V_CC = CE
170
V_BAT = V_CHRG
160
150
140
130
120
3.0 3.1
3.2 3.3 3.4
3.5 3.6
V_CC (V)
V_TP vs. TEMPERATURE
3.00
2.95
2.90
2.85
2.80
-40 -20 0 20 40 60 80
TEMPERATURE (°C)
RST OUTPUT-VOLTAGE LOW
vs. OUTPUT-CURRENT LOW
0.6
V_CC = 2.8V
0.5
0.4
0.3
0.2
0.1
0
0
5
10
15
20
I_OL (mA)
BATTERY CHARGER CURRENT
vs. BATTERY VOLTAGE
8
V_CC = CE = 3.3V
7
6
5
4
3
2
1
V_CHRG = 2.86V
0
0
0.2
0.4
0.6
0.8
1.0
DELTA BELOW V_CHRG (V)
DQ V_OH vs. DQ I_OH
3.5
V_CC = 3.3V
3.3
3.1
2.9
2.7
2.6
-5
-4
-3
-2
-1
0
I_OH (mA)
RST VOLTAGE
vs. V_CC DURING POWER-UP
4.0
T_A = +25°C
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
V_CC POWER-UP (V)
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