User manual
Technical data
12
4.2. General pin-out
All pins labeled PAxx / IOyy can be used as IO pins. They are referenced in LCD-Term's
setup and IO functions as IOyy. The pin-out tables contain the mapping between a
connector's pin number and the IOyy pins for the different LCD-Term boards.
echo -e -n "\033[3;0O" > /dev/ttyACM0
Example4.1.Setting IO03
1
to low level.
4.2.1. Left connector
This connector basically contains the serial interface and power supply.
DescriptionPin
LCD-Term12 (X4) LCD-Term15 (X1) LCD-Term25 (X1) LCD-Term35 (X2)
1 3.3V
a
3.3V
a
3.3V
a
3.3V
a
2 GND GND GND GND
3 TXD TXD TXD TXD
4 RXD RXD RXD RXD
5 PA11 / IO04 PA11 / IO07 PA11 / IO10 PA11 / IO13
6 5V
b
5V
b
5V
b
7 PA24 / USB_D- PA24 / USB_D- PA24 / USB_D-
8 PA25 / USB_D+ PA25 / USB_D+ PA25 / USB_D+
9 GND GND GND
10 SCL
c
SCL
c
11 SDA
c
SDA
c
12 PA31 / IO11 PA31 / IO12
13 PA30 / IO11
14 PA15 / IO10
15 PA14 / IO09
16 PA10 / IO08
a
Can be used as power supply; otherwise generated from +5V to supply external hardware
b
From USB +5V; can be used as power supply when USB is not connected
c
Currently unused; do not connect
Table4.3.Left connector
4.2.2. Right connector
The right connector mainly comprises of IO pins.
DescriptionPin
LCD-Term12 (X2) LCD-Term15 (X2) LCD-Term25 (X2) LCD-Term35 (X4)
1 GND 3.3V
a
3.3V
a
5V
b
1
This pin occupies different pin numbers on the right connector. See: Table4.4, “Right connector”