Figure 3. Top Layout - ST STM32F051R8T6 User Manual

Hardware and layout
Figure 3. Top layout
(red/green LED) LD2
COM
3V power supply
input output
CN3
SWD connector
STM32F051R8T6
B1 user button
(green LED) LD3
Note: Pin 1 of CN2, CN3, P1 and P2 connectors are identified by a square.
10/41
ST-LINK/V2
Doc ID 022910 Rev 2
UM1525
LD1 (red LED)
PWR
5V power supply
input output
CN2
ST-LINK/DISCOVERY
selector
JP2
IDD measurement
SB1 (VBAT)
SB3 (B1-USER)
B2 reset button
SB4 (B2-RESET)
LD4 (blue LED)
MS30024V1