Billion Electric Co. Ltd. BIL-SIM7100C Benutzerhandbuch
Smart Machine Smart Decision
SIM7100C_User Manual_V1.01
2015-09-19
30
to ground, then the module will reset.
This pin is already pulled up in module, so the external pull-up resistor is not necessary. A 100nF capacitor
close to the RESET pin is strongly recommended. A reference circuit is recommended in the following
figure.
close to the RESET pin is strongly recommended. A reference circuit is recommended in the following
figure.
Figure 11: Reset circuit
Note
：
50ms<Treset<200ms. ESD components are suggested to be used on Reset pin.
Table 11: RESET Pin Electronic Characteristic
Symbol
Description
Min
Typ
Max
Unit
V
IH
Input high level
voltage
voltage
1.17
1.8
2.1
V
V
IL
Input low level
voltage
voltage
-0.3
0
0.63
V
T
reset
Low level pulse width
50
100
200
ms
3.3 UART Interface
SIM7100C provides an UART (universal asynchronous serial transmission) port， consisting of a flexible
7-wire serial interface. The module is as the DCE (Data Communication Equipment) and the client PC is
as the DTE (Data Terminal Equipment). AT commands are entered and serial communication is performed
through UART interface.
7-wire serial interface. The module is as the DCE (Data Communication Equipment) and the client PC is
as the DTE (Data Terminal Equipment). AT commands are entered and serial communication is performed
through UART interface.
Table 12: UART Pin description