Uart Interfaces - Quectel NB-IoT Module Series Hardware Design

The reset scenario is illustrated in the following figure.
VDD_EXT
Module
Status

3.8. UART Interfaces

The module provides three UART ports: main UART port, debug UART port and auxiliary UART port. The
module is designed as DCE (Data Communication Equipment), following the traditional DCE-DTE (Data
Terminal Equipment) connection.
Main UART Port:

TXD: Send data to RXD of DTE.

RXD: Receive data from TXD of DTE.
BC66_Hardware_Design
S1
Figure 10: Reference Circuit of RESET by Using Button
VBAT
TBD
RESET
Running
Figure 11: Reset Timing
RESET
TVS
Close to S1
TBD
· · · · · · · · · · · ·
Resetting
NB-IoT Module Series
BC66 Hardware Design
Restart
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