User's Manual
Table Of Contents
- Version History
- Contents
- Table Index
- Figure Index
- 1Introduction
- 2 Package Information
- 3 Interface Application
- 4 RF Specifications
- 5 Electrical Specification
- 6 SMT Production Guide
- 7 Packaging
- 8 Appendix
SIM7600G-H User manual
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The MODULE UART is 1.8V voltage interface. If user’s UART application circuit is 3.3V voltage interface,
the level shifter circuits should be used for voltage matching. The TXB0108RGYR provided by Texas
Instruments is recommended. The following figure shows the voltage matching reference design.
Figure 15: Reference circuit of level shift
User can use another level shifter circuits as follow
Figure 16: level matching circuit
To comply with RS-232-C protocol, the RS-232-C level shifter chip should be used to connect MODULE to
the RS-232-C interface, for example SP3238ECA, etc.