Schematics

7231U
C12
4.7uF
C10
100N
R2
22R
GND
1
2
3
4
X1
26MHz
C14
10uF
C2
10pF
C1
12pF
R1
10K
L13.3nH
C9
2.4nH
C6
1pF
C15
4.7uF
C11
10uF
C8
NC
C13
4.7uF
C4
1pF
C3
4.7uF
1
VCCRXFE
2
ANT
3
VCCPA
4
VCCPAD
5
VCCIF
6
VSYS
7
VDDIG
8
VDDAON
9
VBAT
10
P25
30
TCK(P20)
29
TMS(P21)
28
TDI(P22)
27
TDO(P23)
26
P17
25
P15
24
P16
23
P14
22
P39
21
P38
31
CE
32
PWM2(P8)
33
PWM3(P9)
34
UART1_RX(P10)
35
UART1_TX(P11)
36
UART2_RX(P1)
37
UART2_TX(P0)
38
XO
39
XI
40
VCCPLL
20
P37
19
P36
18
P35
17
P34
16
P31
15
P30
14
P27
13
P29
12
P32
11
P33
41
GND
U1
BK7231UQN40
TP20
C5
1uF
2
GND
5
VOUT
1
VIN
3
EN
4
BP
U3
TCS2109-E33
C17
10uF
R5
1K
R4
1K
R3
10K
C18
100N
TP8
TP1
TP19
TP7
TP5
TP6
TP2
TP17
R9
1k
C19
10uF
R7
20K 1%
R8
100K 1%
L2
4.7uH
C16
22uF
4
EN
5
IN
6
SW
3
FB
2
GND
1
BS
U2
TCS9302-F
TP12
TP11
R6
22R
TP4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
J2
TP9
TP3
TP15
F4
TP13
F3
TP10
TP14
TP16
F2 F1
12
LED1
LED Red
D1
IN5819 SOD-123
ANT1
2
GND
5
VOUT
1
VIN
3
EN
4
BP
U4
TCS2193-E28
C20
1uF
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
J1
2
GND
5
VOUT
1
VIN
3
EN
4
BP
U5
TCS2193-E28
R10
10K
C7
100N
F5
CEN
TDO
P20_TCK_F_SCK
P21_TMS_F_CSN
TDI
C1RESET
SDA SCL
VSYNC
HSYNC
D1
D0
PCLK
MCLK
D2 D3 D4 D5
D6
D7
UART1_TXD UART1_RXD
UART1_RXD
CEN
P20_TCK_F_SCK
P21_TMS_F_CSN
TDI
TDO
MISO
UART1_TXD
C1RESET
SDA
SCL
C1RESET
VSYNC
HSYNC
D7
MCLK
D6
D5
PCLK
D4
D0
D3
D1
D2
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND GND
GND
GND
C1VDD28
VDD33
C1VDD28
VDD33
VDD33
VDD33
C1VDD28
C1VDD28
VDD33
VDD33
GND
C1VDD-EN
C1VDD-EN
SDA
SCL
C2RESET
VSYNC
HSYNC
D7
MCLK
D6
D5
PCLK
D4
D0
D3
D1
D2
GND
GND
VDD33
C2VDD28
C2VDD28
C2VDD28
C2VDD-EN
C2VDD-EN
C2RESET
GND
C2RESET
MISO
SDA
SCL
VDD33