Chengdu Ebyte Electronic Technology Co., Ltd.
Copyright ©2012–2021
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Chengdu Ebyte Electronic Technology Co.,Ltd
7
3.2 Pin definition
No.
Name
Direction
Function
1
GND
-
Ground wire, connected to the power reference ground
2
LCD-SEG10
Input/Output
MCU GPIO
3
LCD-SEG11
Input/Output
MCU GPIO
4
LCD-SEG12
Input/Output
MCU GPIO
5
LCD-SEG13
Input/Output
MCU GPIO
6
LCD-SEG14
Input/Output
MCU GPIO
7
LCD-SEG15
Input/Output
MCU GPIO
8
LCD-SEG16
Input/Output
MCU GPIO
9
LCD-SEG17
Input/Output
MCU GPIO
10
I2C-SDA
Input/Output
I2C-SDA pin
11
I2C-SCL
Input/Output
I2C-SCL pin
12
ADC-IN0
Input
ADC input pin
13
ADC-IN1
Input
ADC input pin
14
GPIO2
Input/Output
MCU GPIO
15
GPIO3
Input/Output
MCU GPIO
16
GPIO4
Input/Output
MCU GPIO
17
ADC_IN2
Input
ADC input pin
18
GND
-
Ground wire, connected to the power reference ground
19
ANT
Output
Antenna interface, stamp hole (50 ohm characteristic impedance)
20
GND
-
Ground wire, connected to the power reference ground
21
GND
-
Ground wire, connected to the power reference ground
22
GND
-
Ground wire, connected to the power reference ground
23
GND
-
Ground wire, connected to the power reference ground
24
SPI-NSS
Input
SPI selection pin, external SPI can be selected
25
SPI-SCK
Input
SPI-SCK pin, can be used as external SPI
26
SPI_MISO
Output
SPI_MISO pin, can be used as external SPI
27
SPI_MOSI
Input
SPI MOSI pin, can be used as external SPI
28
LCD-SEG1
-
MCU GPIO
29
LCD-SEG2
Input/Output
MCU GPIO
30
SWIM
Input/Output
Programming pin
31
NRST
Input
External reset pin
32
LCD-COM0
Input/Output
MCU GPIO
33
LCD-COM1
Input/Output
MCU GPIO
34
LCD-COM2
Input/Output
MCU GPIO
35
VREFP
Input
ADC reference voltage input
36
UART1-RX
Input
UART1-RX pin
37
UART1-TX
Output
UART1-TX pin
38
VLCD
Input
VLCD pin
