Datasheet of CM4 Industrial V1.4

EDA Technology Co.,LTD

– Electronics Development Accelerator

Pin ID

Pin Name

1

GND

2

ADC1

3

ADC2

4

ADC3

The terminal specification model is 2EDGR-2.5-4P/15EDGRC-2.5-04P-14-00AH, the spacing between

terminals is 2.5mm.

3.2.4 RS232

CM4 Industrial has a serial port with RS232 level, the interface name is J34, the CM4 serial port UART5

is used, and the corresponding device file is /dev/ttyAMA3.

Pin ID

Pin Name

1

GND

2

TXD

3

RXD

The terminal specification model is 2EDGR-2.5-3P/15EDGRC-2.5-03P-14-00AH, the spacing between

terminals is 2.5mm.

RS232 corresponds to the serial port UART5 of CM4, and the corresponding pin names are as follows:

#

Signal

CM4 Pinout

1

TXD5

UART5_TX / GPIO12

2

RXD5

UART4_RX / GPIO13

3.2.5 RS485

CM4 Industrial has two RS485 channels, and the interface is named J16.