Basic Operation; Hardware Design - Ebyte E22-900M22S User Manual

Chengdu Ebyte Electronic Technology Co., Ltd.
12 GND
13 DIO1
14 BUSY
15 NRST
16 MISO
17 MOSI
18 SCK
19 NSS
20 GND
21 ANT
22 GND

4. Basic Operation

4.1 Hardware Design

SN Brief Connection between Module and Single Chip Microcomputer
1 The IO0、IO1、IO2、IO3 in MCU means the IO port of MCU.
DIO1、DIO2 is the normal IO port, which can be configured to multiple function. The DIO2 can
2 connect with TXEN， but not with the IO port of MCU. It's used to control RF switch, see more details
in SX1262 datasheet. Also It can be floated when not in use.
3 The DIO3 is powered by a 32MHz TCXO crystal.
4 Ensure the good grounding, large area of paving, small the power supply ripple, the filter capacitor
Copyright ©2012–2018, Chengdu Ebyte Electronic Technology Co.,Ltd.
Ground wire, connected to the power reference ground
Input/Output Configurable universal IO port (see SX1262 manual for details)
Output For status indication (see SX1262 manual for details)
Input Chip reset trigger input pin, valid in low level
Output SPI data output pin
Input SPI data output pin
Input SPI data output pin
Input Module chip select pin for starting an SPI communication
Ground wire, connected to the power reference ground
Antenna interface, stamp hole (50 ohm characteristic impedance)
Ground wire, connected to the power reference ground
E22-900M22S User manual
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