ST STM32F0 Series Application Note page 26

Reference design
Figure 14. STM32F061R8 microcontroller reference schematic
SWD connector
CN 1
FTSH - 105-01-L-DV
10
9
8
7
6
5
4
3
2
1 VDD
Boot mode
VDD
SW1
R2
10K
VDD
VDD
Battery
BT 1
X2
32KHz
C7 C8
10pF 10pF
LSE
Note: If no external battery is used in the application, it is recommended to connect V
externally to V
26/29
49
PA14
50
PA15
51
PC10
52
PC11
53
PC12
54
PD2
55
PB3
56
PB4
57
PB5
58
PB6
59
PB7
60
BOOT 0
61
PB8
62
PB9
63
VSS_ 1
64
VDD_ 1
1
2
3
JP12
R1
390
X1
8MHz
C9 C10
20pF 20pF
HSE
.
DD
Doc ID 023035 Rev 2
MCU
U2
STM32 F 061R8 T6
VDD
32
VDD_ 2
31
VSS_ 2
30
PB11
29
PB10
28
NPOR
27
PB1
26
PB0
25
PC5
24
PC4
23
PA7
22
PA6
21
PA5
20
PA4
19
PF5
18
PF4
17
PA3
VDD A
B1
1 2
VDD A
4 3
RESE T
C5
1uF
C4
100nF
AN4080
NPOR signal
VDD
C3 C1 C2 C6
10nF 100nF 100nF 4.7uF
BAT