Hardware layout UM1690
20/27 UM1690 Rev 3
5.14 Extension connectors
The male headers P1 and P2 can connect the STM32F072 Discovery kit to a standard
prototyping/wrapping board. STM32F072RBT6 GPIOs are available on these connectors.
P1 and P2 can also be probed by an oscilloscope, logical analyzer or voltmeter.
Table 8. MCU pin description versus board function
MCU pin Board function
Main function
LQFP64 pin num.
System
Linear touch sensor
I3G4250D
EXT/ RF-E2P
Pushbutton
LED
USB USER
Free I/O
Power supply
CN3
CN4
P1
P2
SBx
(1)
BOOT0 60
BOOT0
-
-
-
-
-
-
-
-
-
-
-
6
-
NRST 7
NRST
-
-
-
RESET
-
-
-
-
-
510
-
-
PA0 14
-
-
-
-
USER
-
-
-
-
-
-
15
-
-
PA1 15
-
-
-
-
-
-
-
PA1
-
-
-
16
-
-
PA2 16
-
TS_G1_IO3
-
-
-
-
-
-
-
-
-
17
-
SB27
PA3 17
-
TS_G1_IO4
-
-
-
-
-
-
-
-
-
18
-
SB28
PA4 20
-
-
-
-
-
-
-
PA4
-
-
-
21
-
-
PA5 21
-
-
-
-
-
-
-
PA5
-
-
-
22
-
-
PA6 22
-
TS_G2_IO3
-
-
-
-
-
-
-
-
-
23
-
SB29
PA7 23
-
TS_G2_IO4
-
-
-
-
-
-
-
-
-
24
-
SB30
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