| Hardware parameters | Parameter value | Remark |
Communicatio
n Interface
| UART/RS485/RS232/USB | single output |
Crystal
frequency | 32MHz |
|
| Encapsulation | In-line
|
|
| In-line - | Mini PCIE |
|
| Dimensions | 30 * 51 mm | 士0.2mm |
| Antenna form | 1st generation IPEX
| Equivalent impedance about
50 Ω |
Product
Weight | 7.2g | 士0.5g |
Electrical
parameters | unit | E22-230T30E | Remark |
| Voltage |
| 3.3~5.5 | More than 5.5V burns the
module permanently |
communica
tion level | v | 3.3 | Use of 5V TTL is recommended
plus level shifting |
| power consumption | emission
current | mA | 600 | Instantaneous power
consumption |
receive
current | mA | 17 |
|
Sleep
current
| mA | 2 | software shutdown |
| temperature | Operating
temperature | c | -20~+85 | industrial design |
Storage
temperature | -40~+125 |
|
Working
humidity | %RH | 10~90 |
|
| Note :When the communication mode is USB, the working voltage is 3.7~5.5. |
| RF parameters | Value | Remark |
Working
frequency | 220.125~236.125 MHz | Support ISM frequency band |
| Transmit power | 30dBm | The software is adjustable and needs to be developed and
set by the user |
Acceptance
sensitivity | -124 dBm | Air rate 2.4 kbps |
| FIFO | 240 Byte | Subpackage 32/64/128/240 bytes can be sent by
command setting |
| Modulation | LoRa | A new generation of LoRa modulation technology |
Measured distance
| 10km | In a clear and open environment, the antenna gain is
5dBi , the antenna height is 2.5 meters, and the air rate is
2.4kbps |
Pin No.
| Item
| Direction | Description |
| 1 | TO | output | Used to indicate the working status of the module; the user
wakes up the external MCU , and outputs a low level during
the initialization of the power-on self-test; (can be suspended) |
| 2 | VCC | Input | Power input 5.0V |
| 3 | M0 | Input
( very weak pull-up ) | Cooperate with M1 to determine the 4 working modes of the
module (not floating, if not used, it can be grounded) |
| 4 | GND | - | power reference ground |
| 5 | Ml | Input
( very weak pull-up ) | Cooperate with M0 to determine the 4 working modes of the
module (not floating, if not used, it can be grounded) |
| 6 | NC | - | -
|
| 7 | NC | -
| -
|
| 8 | NC | -
| -
|
| 9 | GND | -
| power reference ground |
| 10 | SMD_DI0 | input /output | Program download data interface ( the module needs to be
reset or erased before SWD programming ) |
| 11 | RXD | input | TTL serial port input, connect external TXD output pin |
| 12 | swD_CLK | input /output | Program download clock interface ( the module needs to be
reset or erased before SWD programming ) |
| 13 | TXD | output | TTL serial port output, connect external RXD input pin |
| 14 | NC | - | - |
| 15 | GND | - | power reference ground |
| 16 | NC | -
| -
|
| 17 | NC | -
| -
|
| 18 | GND | -
| power reference ground |
| 19 | NC | - |
|
| 20 | NC | - | power reference ground |
| 21 | GND | - | power reference ground |
| 22 | RESET | input | The input low level module enters the hardware reset state, and
the input high level module recovers the normal working state.
This function is used for the reset operation in emergency |
| 23 | NC | - | -
|
| 24 | VCC | input | Power input 5.0V |
| 25 | NC | - | -
|
| 26 | GND | - | power reference ground |
| 27 | GND | - | power reference ground |
| 28 | NC | - | -
|
| 29 | GND | - | power reference ground |
| 30 | NC | - | -
|
| 31 | NC | - | -
|
| 32 | NC | - | - |
| 33 | NC | - | -
|
| 34 | GND | - | power reference ground |
| 35 | GND | -
| power reference ground |
| 36 | USB_D- | input /output | D- of other external USB devices |
| 37 | GND | - | power reference ground |
| 38 | USB_D+ | input /output | D+ connected to other USB devices |
| 39 | VCC | input | Power input 5.0V |
| 40 | GND | - | power reference ground |
| 41 | VCC | input | Power input 5.0V |
| 42 | NC | - | -
|
| 43 | GND | - | power reference ground |
| 44 | NC | - | -
|
| 45 | RS232_RXD | input | External TXD of other RS232 devices |
| 46 | NC | - | -
|
| 47 | RS232_TXD | output | RXD connected to other RS232 devices |
| 48 | NC | -
| -
|
| 49 | RS485_A | input /output | A terminal connected to other RS485 devices |
| 50 | GND | - | power reference ground |
| 51 | RS485_B | input /output | Connect to the B terminal of other RS485 devices |
| 52 | VCC | input | Power input 5.0V |
