Smart Machine Smart Decision
SIM868_Series_Hardware_Design_V1.06
59
2017-07-13
Note: These parameters are for digital interface pins, such as GPIO and UART.
8.4.
SIM Card Interface Characteristics
Table 37: SIM card interface characteristics
Symbol
Parameter
Min
Typ
Max
Unit
I
IH
High-level input current
-1.0
-
1.0
uA
I
IL
Low-level input current
-1.0
-
1.0
uA
V
IH
High-level input voltage
1.4
-
-
V
2.4
-
-
V
V
IL
Low-level input voltage
-
-
0.27
V
0.4
V
V
OH
High-level output voltage
1.62
-
-
V
2.7
-
-
V
V
OL
Low-level output voltage
-
-
0.36
V
-
-
0.4
V
8.5.
SIM_VDD Characteristics
Table 38: SIM_VDD characteristics
Symbol
Parameter
Min
Typ
Max
Unit
V
O
Output voltage
-
3.0
-
V
-
1.8
-
I
O
Output current
-
-
10
mA
8.6.
VDD_EXT Characteristics
Table 39: VDD_EXT characteristics
Symbol
Parameter
Min
Typ
Max
Unit
V
O
Output voltage
2.7
2.8
2.9
V
I
O
Output current
-
-
50
mA
8.7.
Current Consumption
（
GSM_VBAT=4.0V
）
Table 40: Current consumption
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
GSM_VBAT
Voltage
4.0
V
Power drop
PCL=5
350
mV
Voltage ripple
PCL=5
SIMCOM
CONFIDENTIAL
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