User's Manual
Table Of Contents
- Contents
- Table Index
- Figure Index
- 1Introduction
- 1.1Product Outline
- 1.2Hardware Interface Overview
- 1.3Hardware Block Diagram
- 1.4Functional Overview
- 2Package Information
- 2.1.Pin Assignment Overview
- 2.2.Pin Description
- 2.3.Mechanical Information
- 2.4.Footprint Recommendation
- 3Interface Application
- 3.1Power Supply
- 3.3UART Interface
- 3.4USB Interface
- 3.5SIM Interface
- 3.6PCM Interface
- 3.7I2C Interface
- 3.8SPI Interface
- 3.9Network status
- 3.10ADC interface
- 3.11LDO output
- 3.12USB_BOOT Interface
- 3.13GPIO Interface
- 3.14 RF control Interface
- 3.15Force USB Download Interface
- 4RF Specifications
- 4.1LTE RF Specifications
- 4.2LTE Antenna Design Guide
- 4.3GNSS
- 4.4RF traces note
- 5 Electrical Specifications
- 5.1Absolute maximum ratings
- 5.2Operating conditions
- 5.3Operating Mode
- 5.4Current Consumption
- 5.5ESD Notes
- 6 SMT Production Guide
- 6.1Top and Bottom View of SIM7090G
- 6.2Label Information
- 6.3Typical SMT Reflow Profile
- 6.5Baking
- 6.6Stencil Foil Design Recommendation
- 7 Packaging
- 7.1Tray packaging
- 8 Appendix
- 8.1Coding Schemes and Maximum Net Data Rates over Air
- 8.2Related Documents
- 8.3Terms and Abbreviations
- 8.4Safety Caution
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5 Electrical Specifications
5.1 Absolute maximum ratings
Absolute maximum rating for digital and analog pins of SIM7090G are listed in the following table:
Table 34: Absolute maximum ratings
Parameter
Min.
Typ.
Max.
Unit
Voltage on VBAT
-0.3
-
6.0
V
Voltage on USB_VBUS
-0.3
-
2.1
V
Voltage at digital pins
(RESET,GPIO,I2C,UART,PCM)
-0.3
-
2.1
V
Voltage at PWRKEY
-0.3
-
2.1
V
ADC
-0.3
-
1.875
V
The absolute parameter is tested when VBAT has the power but the PWRKEY has no pulled down. If it is
over the range, the module will be damage. If the power supply on VBAT pin had been shut down, and the
other pin should not have the voltage. Otherwise, it may lead to abnormally boot up or damage the module.
5.2 Operating conditions
Table 35: Recommended operating ratings
Parameter
Min.
Typ.
Max.
Unit
Voltage at VBAT
2.7
3.8
4.8
V
Voltage at USB_VBUS
0
1.8
2.1
V
Make sure that the voltage on the VBAT pins will never drop below 2.7V, even during a transmit burst.
Otherwise, module will be power down.