Table 20: SIM card interface characteristics
Symbol
Parameter
I
High-level input current
IH
I
Low-level input current
IL
V
High-level input voltage
IH
V
Low-level input voltage
IL
V
High-level output voltage
OH
V
Low-level output voltage
OL
5.5
SIM_VDD Characteristics
Table 21: SIM_VDD characteristics
Symbol
Parameter
V
Output voltage
O
I
Output current
O
5.6
VRTC Characteristics
Table 22: VRTC characteristics
Symbol
Parameter
V
VRTC input voltage
RTC-IN
I
VRTC input current
RTC-IN
V
VRTC output voltage
RTC-OUT
I
VRTC output current
RTC-OUT
5.7
Current Consumption (VBAT = 3.8V)
Table 23: Current consumption
Symbol
Parameter
I
VRTC current
VRTC
I
VBAT current
VBAT
SIM900D_Hardware Design_V2.02
Min
-10
-10
1.4
2.4
-
1.7
2.7
-
-
Min
2.75
1.65
-
Min
2.00
-
-
-
Conditions
VBAT disconnects. Backup battery is 3 V
Power down mode
Sleep mode
BS-PA-MFRMS=9
42
Smart Machine Smart Decision
Typ
Max
-
10
-
10
-
-
-
-
-
0.4
2.4
-
-
-
-
-
0.1
-
0.1
Typ
Max
2.9
3.00
1.80
1.95
-
10
Typ
Max
3.00
3.15
2
-
3.00
-
10
-
Value
2
30
1.0
Unit
uA
uA
V
V
V
V
V
V
V
V
Unit
V
mA
Unit
V
uA
V
uA
Unit
uA
uA
mA
2012-05-07
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