User's Manual

Smart Machine Smart Decision
SIM7600SA_User Manual_V1.00 2017-10-11
Table 10: RESET pin electronic characteristic
Symbol
Description
Min.
Typ.
Max.
Unit
T
reset
The active low level time impulse on RESET pin to
reset module
50
100
500
ms
V
IH
Input high level voltage
1.17
1.8
2.1
V
V
IL
Input low level voltage
-0.3
0
0.8
V
3.3 UART Interface
SIM7600SA provides a 7-wire UART (universal asynchronous serial transmission) interface as
DCE (Data Communication Equipment). AT commands and data transmission can be performed
through UART interface.
3.3.1 UART Design Guide
The following figures show the reference design.
Figure 13: UART full modem
Figure 14: UART null modem
The SIM7600SA 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