Siemens SIMATIC IOT2040 - UART Debug

Technical specifications
7.5 Hardware descriptions
SIMATIC IOT2020, SIMATIC IOT2040
Operating Instructions, 10/2016, A5E37656492-AB
55
Pin
Operating mode
DIGITAL
ANALOG
POWER
SERIAL
SPI
I2C
PWM
4
17
A3
5
18
A4
SDA
6 19 A5 SCL
X13
Pin
Operating mode
DIGITAL
ANALOG
POWER
SERIAL
SPI
I2C
PWM
1
2
IOREF
3
RESET
4
3,3 V
5
5 V
6
GND
7
GND
8
VIN
X15 (ICSP)
Pin
Operating mode
DIGITAL
ANALOG
POWER
SERIAL
SPI
I2C
PWM
1
12
MISO
2
5 V
3
13
SCK
4
11
5
RESET
MOSI
6
GND
7.5.3.2
UART Debug
X14
Pin
Assignment
1
GND
2
RTS_N
3
n. c.
4
RxD
5
TxD
6
CTS_N