SimCom SIM7020C

Smart Machine Smart Decision
SIM7020_Hardware_Design_V1.02 34 2018-07-25
5 Electrical Specifications
5.1 Absolute maximum ratings
Absolute maximum rating for digital and analog pins of SIM7020 are listed in the following table:
Table 24: Absolute maximum ratings
Parameter
Min.
Typ.
Max.
Unit
Voltage at VBAT
-0.5
-
4.5
V
Voltage at USB_VBUS
-0.5
-
5.85
V
Voltage at digital pins (GPIO, UART etc)
-0.3
-
2.1
V
Voltage at digital pins (SIM)
-0.3
-
3.05
V
Voltage at
PWRKEY/RESET/RTC_EINT/RTC_GPIO0
-0.3 - 3.9
5.2 Operating conditions
Table 25: Recommended operating ratings
Parameter
Min.
Typ.
Max.
Unit
Voltage at VBAT
2.1
3.3
3.6
V
Voltage at USB_VBUS
2.5
5.0
5.25
V
Table 26: 1.8V Digital I/O characteristics*
Parameter
Description
Min.
Typ.
Max.
Unit
V
IH
High-level input voltage
1.17 1.8 2.1 V
V
IL
Low-level input voltage
-0.3 0 0.63 V
V
OH
High-level output voltage
1.35 - 1.8 V
V
OL
Low-level output voltage
0 - 0.45 V
I
OH
High-level output current(no pull
down resistor)
4 mA
I
OL
Low-level output current(no pull
up resistor)
4 mA
I
IH
Input high leakage current (no
pull down resistor)
5 uA
I
IL
Input low leakage current(no pull
up resistor)
5 uA