mikroElektronika mikromedia for STM32, Руководство пользователя

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STM32F207VGT6 and STM32F407VGT6
microcontrollers are equipped with internal
16MHz RC oscillator that provides stable clock
signal. Since the chips have an integrated PLL, this
base frequency is suitable for further clock multiplication.
Board also contains
32.768kHz Crystal oscillator (X1)
which provides external clock for internal RTCC module.
5. Oscillators
Figure 5-1:
Crystal oscillator module (X1)
58
57
56
55
54
53
52
72
69
68
67
66
65
64
63
8 7 9 0
62
61
60
59
71
51
70
6
75
74
73
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0
VCC-3.3
C2
22pF
C1
22pF
X1
32.768KHz
AVCC
30 29 28 27 34 33 46 36 35 42 43 44 45 37 50
9
48 49
11
12
32
4
3
7 7
24
23
18
17
16
15
14
13
5
6
7
8
10
7 8
1
2
22
21
20
19
38 39 40 41 47 31 26
25
7 8 8 8 8 8 8 8 8 8 9 9 9 9 9 9 9 9 9 9
10
PE
11
PE
10
PE6
VBAT
PC13/TAMPER_RTC
PC14/OSC32_IN
PA10
PA9
PA8
PD9
PE
13
PE
12
PB13
PB14
PB15
PD8
PE
14
PE
15
PB
5
PB
4
PB
3
PB
7
PD
7
PD
6
PE5
PE4
PE
1
PE
0
PB
9
PB
8
B
O
O
T
0
PB
6
OSC_IN
PA0-WKUP
VDDA
VREF+
GNDA
VDD
PC3
PA12
PA11
PB12
PC8
NRST
VDD
GND
PE
7
PD
R
_O
N
(R
FU
)
V
D
D
PE2
PE3
PA2
PA1
V
C
A
P
V
D
D
PC9
PD13
PB
10
PB
11
PD10
PE
8
PB
2
PD11
PD14
PD
5
PC2
PC1
PC0
PB
1
PE
9
PD12
PC7
OSC_OUT
PC15/OSC32_OUT
PD15
PC6
PA13
PC
10
PA
14
VCAP
GND
VDD
PA
15
PC
11
PC
12
PD
0
PA
6
PA
5
PC
4
PA
7
PC
5
PB
0
G
N
D
V
D
D
PA
3
PA
4
PD
1
PD
2
PD
3
PD
4
U1
OSC32_IN
OSC32_OUT
VREF-1.8
R65
100K
C41 2.2uF
C42
2.2uF
R66 100K
decoupling
capacitors
C5
100nF
C6
100nF
C7
100nF
C8
100nF
E8
10uF
VCC-3.3 VCC-3.3 VCC-3.3 VCC-3.3 VCC-3.3
C31
100nF
VCC-3.3
VCC-3.3
J3
J2
STM32F207VGT6
STM32F407VGT6
The use of crystal in all other schematics is implied even if it is
purposely left out, because of the schematics clarity. NOTE:
Figure 5-2:
Crystal oscillator
schematics