Electrical Specifications; Absolute Maximum Ratings; Operating Conditions - SimCom SIM7020C Hardware Design

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
Voltage at VBAT
Voltage at USB_VBUS
Voltage at digital pins (GPIO, UART etc)
Voltage at digital pins (SIM)
Voltage
PWRKEY/RESET/RTC_EINT/RTC_GPIO0
5.2

Operating conditions

Table 25: Recommended operating ratings
Parameter
Voltage at VBAT
Voltage at USB_VBUS
Table 26: 1.8V Digital I/O characteristics*
Parameter Description
V High-level input voltage
IH
V Low-level input voltage
IL
V High-level output voltage
OH
V Low-level output voltage
OL
High-level output current(no pull
I
OH
down resistor)
Low-level output current(no pull
I
OL
up resistor)
Input high leakage current (no
I
IH
pull down resistor)
Input low leakage current(no pull
I
IL
up resistor)
SIM7020_Hardware_Design_V1.02
Min. Typ.
-0.5 -
-0.5 -
-0.3 -
-0.3 -
at
-0.3 -
Min. Typ.
2.1 3.3
2.5 5.0
Min. Typ.
1.17 1.8
-0.3 0
1.35 -
0 -
34
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Max.
4.5
5.85
2.1
3.05
3.9
Max.
3.6
5.25
Max.
2.1
0.63
1.8
0.45
4
4
5
5
2018-07-25
Unit
V
V
V
V
Unit
V
V
Unit
V
V
V
V
mA
mA
uA
uA