Ebyte E77-M22S Series - Page 10

Chengdu Ebyte Electronic Technology Co., Ltd. E77-xxxM22S User Manual
Copyright © 2012-2 024 , Chengdu Ebyte Electronic Technology Co., Ltd.
8
IAP upgrade mode.
8
PA1
input Output
Configurable general-purpose IO port (see STM32WLE5CCU6
manual for details)
9
PA2
input
Output
LP_ USART 2 _TX (AT command serial port transmission pin)
10
PA3
input Output
LP_ USART 2 _RX (AT command serial port receiving pin)
11
PA4
input Output
Configurable general-purpose IO port (see STM32WLE5CCU6
manual for details)
12
PA5
input Output
Configurable general-purpose IO port (see STM32WLE5CCU6
manual for details)
13
GND
input Output
Ground wire, connected to the power reference ground
14
ANT
input Output
Antenna interface, stamp hole (50 Ω characteristic impedance)
15
GND
input Output
Ground wire, connected to the power reference ground
16
PA8
input Output
Configurable general-purpose IO port (see STM32WLE5CCU6
manual for details)
17
NRST
enter
Chip reset trigger input pin, active low level (built-in 0.1uF ceramic
capacitor)
18
PA9
input Output
Configurable general-purpose IO port (see STM32WLE5CCU6
manual for details)
19
PA12
input Output
Configurable general-purpose IO port (see STM32WLE5CCU6
manual for details)
20
PA11
input Output
Configurable general-purpose IO port (see STM32WLE5CCU6
manual for details)
twenty one
PA10
input Output
Configurable general-purpose IO port (see STM32WLE5CCU6
manual for details)
twenty two
PB12
input Output
Configurable general-purpose IO port (see STM32WLE5CCU6
manual for details)
twenty
three
PB2
input Output
Configurable general-purpose IO port (see STM32WLE5CCU6
manual for details)
twenty four
PB0
input Output
Configurable general-purpose IO port (see STM32WLE5CCU6
manual for details)
25
PA15
input Output
Configurable general-purpose IO port (see STM32WLE5CCU6
manual for details)
26
PC13
input Output
Configurable general-purpose IO port (see STM32WLE5CCU6
manual for details)
27
GND
output
Ground wire, connected to the power reference ground
28
VDD
enter
Power supply, ranging from 1.8 to 3.6 V (it is recommended to add
external ceramic filter capacitors)
29
SWDIO
enter
Program download
30
SWCLK
enter
Program download
*The pins in red font are the pins used by the LoRaWAN firmware that comes with the module;
Note 1: The PA6 and PA7 pins are used as internal control radio frequency switches in the module, PA6 =
RF_TXEN, PA7 = RF_RXEN, RF_TXEN=1 RF_RXEN=0 is the sending channel, RF_TXEN=0 RF_RXEN=1 is the
receiving channel