ST TN100 RF, User Manual, Page: 10 / 37

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TN100 sensor board UM0579
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3.1.3 Extension connector (CN3)
The 14-pin extension connector CN3 can be used together with the CN2 connector to
connect an extension. The CN2 to CN3 pitch distance is 2.54 mm so it makes it possible to
connect a standardized bread board or other extension.
Figure 7. Extension connector (CN3) pinout
3.1.4 USB connector (CN4)
The board includes a mini USB AB SMT connector. The communication lines are not used
with the TN100 board. The V
BUS
+ 5 V voltage (pin 1) can be used as an alternative board
power supply.
Figure 8. USB connector (CN4) pinout
Table 3. Extension connector (CN2) pin description
Pin STM32 pin Pin STM32 pin Pin STM32 pin
1 GND 6 PB8 11 PA2
2 2.5 V DC 7 PB9 12 PA3
3 PB5 8 PC13 13 NC
4 PB6 9 PA0 14 NC
5 PB7 10 PA1
Table 4. Extension connector (CN3) pin description
Pin STM32 pin Pin STM32 pin Pin STM32 pin
1 GND 6 PB12 11 PA9
2 2.5 V DC 7 PB13 12 PA10
3 PB2 8 PB14 13 PA11
4 PB10 9 PB15 14 PA
12
5 PB11 10 PA8
1
2
3 5 7 9
4 6 8 10
11 13
12 14
AM00263
AM00265
1 5