User Guide
GD32L233C-START
10/16
4.9.
MCU
Figure 4-9. Schematic diagram of MCU
C15
50V/20pF
C16
50V/20pF
Y2
HC-49SMD-8MHz
R19
1M
Ω
GND
OSC_IN
OSC_OUT
OSC_OUT
OSC_IN
NRST
K1
K-1102B
+3V3
GND
R20
10K
Ω
C12
50V/0.1uF
NRST
BOOT0
+3V3
C10
50V/0.1uF
C11
50V/1uF
GND
+3V3
PB11
PB10
PA3
PB8
PB9
PC13
PC14
PC15
PB15
PB14
PB13
PB12
NRST
L_TMS/IO
L_TCK/CLK
L_TReset
GDLink
SWD
GND
C14
50V/10pF
C13
50V/10pF
Y1
32.768KHz
PC14
PC15
PA0
PA1
PA2
PA7
PA6
PA5
PA4
PA13
PA12
PA11
PA10-Rx
PA8
PA14
PA15
PB2
PB1
PB0
PB6
PB7
PB3
PB4
PB5
GND
VREF+
C23
50V/0.01uF
+3V3
L1
EBLS1608-3R3K
GND
C1
50V/0.1uF
PA9-Tx
1
2
3
4
JP2
4×1P2.54
+3V3
GND
SWD
BOOT0
46
NRST
7
OSC_IN/PF0
5
OSC_OUT/PF1
6
PA0
11
PA1
12
PA2
13
PA3
14
PA4
15
PA5
16
PA6
17
PA7
18
PA8
30
PA9
31
PA10
32
PA11
33
PA12
34
PA13/SWDAT
35
PA14/SWCLK
36
PA15
37
PB0
19
PB1
20
PB2/BOOT1
21
PB3
41
PB4
42
PB5
43
PB6
44
PB7
45
PB8
47
PB9
48
PB10
22
PB11
23
PB12
24
PB13
25
PB14
26
PB15
27
PC13
2
PC14-OSC32_IN
3
PC15-OSC32_OUT
4
VBAT
1
VREF+
9
VSS
8
VDD
10
PC6
28
PC7
29
PC10
38
PC11
39
PC12
40
U3
GD32L233CCT6
VREF+
PC10
PC11
PC12
PC6
PC7
SWDAT
SWCLK
SWDAT
SWCLK
