User Manual

Smart Machine Smart Decision
SIM7100_Hardware_Design_V1.02 2015-06-16
5 Electrical Specifications
5.1 Absolute maximum ratings
Absolute maximum rating for digital and analog pins of SIM7100 are listed in the following table:
Table 29: Absolute maximum ratings
Parameter
Min.
Max.
Unit
Voltage at VBAT
-
0.5
6.0
V
Voltage at USB_VBUS -0.5 5.25 V
Voltage at digital pins
(PWRKEY,RESET,SPI,Keypad,GPIO,I2C,UART,PCM)
-0.3 2.1 V
Voltage at digital pins (SD,USIM) -0.3 3.05 V
5.2 Operating conditions
Table 30: Recommended operating ratings
Parameter Min. Typ. Max. Unit
Voltage at VBAT
3.4
3.8
4.
2
V
Voltage at USB_VBUS
2.0
5
5.25
V
Table 31: 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)
- 2 - mA
I
OL
Low-level output current(no pull
up resistor)
- -2 - mA
I
IH
Input high leakage current (no
pull down resistor)
- - 1 uA
I
IL
Input low leakage current(no
pull up resistor)
-1 - - uA
*Note: These parameters are for digital interface pins, such as SPI, Keypad, GPIOs (NETLIGHT,