The Ai-Thinker Ra-09H LoRaWAN Module is a state-of-the-art solution engineered for long-range, low-power wireless communication, making it an excellent choice for Internet of Things (IoT) applications. Powered by the STM32WLE5CCU6 chip from STMicroelectronics, this module integrates a 32-bit Arm® Cortex-M4 processor operating at 48MHz, coupled with 256KB of Flash memory and 64KB of SRAM. This robust combination ensures efficient processing capabilities while maintaining exceptional energy efficiency, critical for battery-operated devices in remote or distributed networks.
Features:
SMD- 48 package.
Supported frequency bands: 803MHz- 930MHz.
Working voltage is 3.3V, theoretical maximum transmit power +22dBm.
High sensitivity: -140dBm @125K H z SF12.
Support spreading factor SF5/SF6/SF7/SF8/SF9/SF10/SF11/SF12.
Embedded memory, 256KB FLASH, 64KB RAM.
Support LoRa/(G)FSK/BPSK/(G)MSK modulation.
The antenna interface is a half-hole pad and IPEX connector, which supports a variety of external antenna connection methods and Support more solution selections.
supports more solution selections.
Specifications:
Specification
Details
Module Model
Ra-09H
Package
SMD-48
Size
18mm × 18mm × 2.6mm (±0.2) mm
Antenna Form
Compatible with half-hole pad / IPEX connector
Frequency Range
803–930 MHz
Operating Temperature
-40°C ~ 85°C
Storage Environment
-40°C ~ 125°C, < 90% RH
Power Supply Range
Voltage: 1.8V–3.6V, Current >500mA
Supported Interfaces
UART/GPIO/ADC/DAC/I2C/I2S/SPI/PWM
IO Count
24
Serial Port Speed
110–4,608,000 bps (Default: 9600 bps)
Crystal Frequency
32MHz
Flash Memory
256 KB
Transfer Protocol
LoRaWAN
Transmission Distance
Up to 4.8 km (open space with suction cup antenna)
Pin Configuration:
Pin No.
Pin Name
Function Description
1, 2, 3, 19, 20, 28, 34, 35, 38-43
NC
Not connected
4
PB8
PB8/I2C1_SCL/PWM
5
PB7
PB7/I2C1_SDA
6
PB6
PB6/I2C1_SCL
7
PB5
PB5/SPI1_MOSI
8
PB4
PB4/SPI1_MISO/ADC_IN3
9
PB3
PB3/ADC_IN2/SPI1_SCK
10
PB2
PB2/SPI1_NSS/ADC_IN4
11
PA1
PA1/SPI1_SCK
12
PA0
PA0
13, 36-37, 45-46, 48
GND
Ground
14
TX1
PA9/UART1_TX/I2C1_SCL/SPI2_SCK/I2S2_CK
15
RX1
PA10/UART1_RX/DAC_OUT1/ADC_IN6/I2C1_SDA
16
PA11
PA11/I2C2_SDA/SPI1_MISO/PWM/ADC_IN7
17
PA12
PA12/I2C2_SCL/SPI1_MOSI/ADC_IN8
18
PA15
PA15/I2C2_SDA/SPI1_NSS/ADC_IN11
21
TX2
PA2/UART2_TX
22
RX2
PA3/UART2_RX/I2S2_MCK
23-24
3V3
3.3V power supply, recommended current ≥500mA
25
PA13
PA13/ADC_IN9
26
PA14
PA14/ADC_IN10
27
NRST
NRST external reset, active low
29
PA6
PA6/SPI1_MISO
30
PA7
PA7/I2C3_SCL/SPI1_MOSI/PWM
31
PA8
PA8/SPI2_SCK/I2S2_CK
32
PC13
PC13
33
PB12
PB12/SPI2_NSS/I2S2_WS
44
PH3
PH3/BOOT0
47
ANT
Antenna interface
Application:
Smart metering and automatic meter reading (AMR/AMI).
Asset tracking and logistics management.
Smart agriculture and remote irrigation monitoring.
Smart building and home automation systems.
Industrial IoT for monitoring and predictive maintenance.
Environmental sensing (weather, soil, air quality).
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