Schematics
WIFI+BLE
8720 module Download
Input current 600mA
PA28/CTS/PWM6/RREF
PB17/SPI_DATA1
PB16/SPI_CS
PB13/SPI_CLK
PB14/SPI_DATA0
ADC6
ADC4/TXD
ADC5/RXD/I2C_SDA
PA25/RXD/USB_DM/I2C_SCL
PA26/TXD/USB_DP
PA30/PWM7/SWD_CLK
PA27/RTS/SWD_DATA
PB20/TXD/PWM12/I2S_CLK/SPI_DATA0/I2C_SCL
PB21/RXD/PWM13/I2S_WS/SPI_CLK/I2C_SDA
PA15/CTS/CS
PA14/RTS/CLK/I2S_TX2
PA13/RXD/MISO/PWM1/I2S_TX1
PA12/TXD/MOSI/PWM0/I2S_MCLK
UART_LOG_TXD
UART_LOG_RXD
CHIP_EN
10uF
22uF
100nF
100nF
4.7k1uF
AP2112K-3.3TRG1
DNP
RTL8720D
DL
DNP
0.5pF
DNP
2.4G+5G
22uF
10uF
100nF
DNP
DNP
0R
0R
0R
0R
DNP
DNP
C3
C6
C7
C8
R11C9
VIN
1
GND
2
SHUTDOWN
3
NC/ADJ
4
VOUT
5
U13
R90
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
13
13
14
14
15
15
16
16
17
17
18
18
19
19
20
20
21
21
22
22
23
23
24
24
25
25
26
26
27
27
28
28
29
29
30
30
31
31
32
32
PAD
51*4
U10
1
2
3
4
5
J2
C27
L3
C28
ANT2
C1
C2
C10
R10
R65
R66
R67
R81
R82
R102
R103
USB_5V
RTL8720D_CHIP_PU
RTL8720D_CHIP_PU
RTL8720D_HSPI_CLK
RTL8720D_HSPI_CLK
RTL8720D_TXD
RTL8720D_TXD
RTL8720D_RXD
RTL8720D_RXD
IRQ0
PWR_EN
RTL8720D_HSPI_MISO
RTL8720D_HSPI_MOSIRTL8720D_HSPI_MOSI
VCC3V3_8720
VCC3V3_8720
VCC3V3_8720
VCC3V3_8720
RTL8720D_HSPI_CS
SYNC
Seeed Studio
TITLE:
Design: Check:
Date: Vision:
CC-BY-SA
A
B
C
D
E
1 2 3 4 5 6 7 8
A
B
C
D
E
1 2 3 4 5 6 7 8