Copyright © Murata Manufacturing Co., Ltd. All rights reserved. 2018
Type 1SC EVK User Guide, v1.3, 5/4/2020
Page
10
of
44
www.murata.com
3.2 External 5V supply
The EVB can also be powered by applying 5V to the Ext_Vin pin of the Arduino interface. This is pin
8 on the CN3 header which is located on the bottom side of the EVB as shown in Figure 7.
Figure 7 Ext_Vin pin location on bottom side of EVB
4
SERIAL INTERFACES
The EVB exports 3 module UART ports through either the USB-UART mini-USB connectors or the
Arduino header. A block diagram for this is shown in Figure 8.
Figure 8 Exported UART interfaces
In the default configuration, USB ports CN13 (UART A & C) and CN14 (UART B) are connected to a
PC for application testing and development; the Arduino interface is not used.
The
host control
for the modem is accomplished through the UART B (CN14) interface. There are
two possible options:
•
Use a PC application (e.g., PuTTY): connect a mini-USB cable to CN14 and disconnect the
Arduino interface. See Section 0 for more instructions.
•
Use the Arduino interface (e.g., Nucleo 64 board): connect MCU to the Arduino interface and
disconnect the mini-USB cable from CN14. See Section 6.1 for the detailed Arduino interface
pin assignments.
UART A & C (CN13) are used for
CLI and debugging
. See Sections 7.4 for more details.
Ext_Vin
3V3_IO
