RAK11722 WisBlock LPWAN Module Datasheet

Overview

Description

The RAK11722 WisBlock Core module is a RAK11720 stamp module with an expansion PCB and connectors compatible with WisBlock Base. It allows an easy way to access the pins of the RAK11720 module to simplify development and testing processes.

The module itself comprises a RAK11720 as its main component. The RAK11720 is a combination of an Ambiq Apollo3 Blue AMA3B1KK-KBR-B0 SoC MCU and an SX1262 LoRa chip. It features ultra-low power consumption of 2.37 uA during sleep mode and high LoRa output power up to 22 dBm during a transmission mode

Also, it complies with LoRaWAN 1.0.3 protocols and supports LoRa point-to-point communication. The RF communication characteristic of the module (LoRa + BLE) makes it suitable for a variety of applications in the IoT field, such as home automation, sensor networks, building automation, and personal area network applications (health/fitness sensors, monitors, etc.).

Features

Based on AMA3B1KK-KBR-B0 and SX1262
ARM Cortex-M4F
1MB Flash and 348KB SRAM
LoRaWAN 1.0.3 specification compliant
Supported bands: EU433, CN470, IN865, EU868, AU915, US915, KR920, RU864, and AS923-1/2/3/4
LoRaWAN Activation by OTAA/ABP
LoRa Point-to-Point (P2P) communication
Custom firmware using Arduino via RUI3 API
Easy-to-use AT Command set via UART interface
I/O ports: UART/I2C/SPI/ADC/GPIO
Long-range - greater than 10 km with optimized antenna
Ultra-low-power consumption of 2.37 μA in sleep mode
Supply Voltage: 1.8 V ~ 3.6 V
Temperature range: -40° C ~ 85° C

Specifications

Overview

The overview covers the RAK11722 board overview and the mounting mechanics of the board into the baseboard.

Mounting Sketch

The RAK11722 module is designed to work with WisBlock Base Boards. Figure 1 shows how a RAK11722 module should be mounted on top of a WisBlock Base Board.

Figure 1: RAK11722 Mounting Sketch

Hardware

The hardware specification is categorized into three parts. It covers the RF, electrical, and mechanical parameters that include the tabular data for the functionalities and standard values of the RAK11722 WisBlock LPWAN Module.

Chipset

Vendor	Part Number
Ambiq, Semtech	AMA3B1KK-KBR-B0, SX1262

RF Characteristics

The RAK11722 module supports the LoRaWAN bands shown in the table below. When buying a RAK11722 module, pay attention to specifying the correct core module RAK11720 H/L for your region, in which H stands for high-frequency regions and L for low-frequency regions.

NOTE

Detailed information about the RAK11722 BLE and LoRa antenna can be found on the antenna datasheet.

Module	Core Module	Region	Frequency
RAK11722L	RAK11722L	Europe	EU433
	RAK11722L	China	CN470
RAK11722	RAK11722	Europe	EU868
	RAK11722	North America	US915
	RAK11722	Australia	AU915
	RAK11722	Asia	AS923-1/2/3/4
	RAK11722	India	IN865
	RAK11722	Russia	RU864

Electrical Characteristics

Power Consumption

Feature	Condition	Minimum	Typical	Maximum	Unit
Operating Current	LORA TX Mode	-	87 (@ 20 dBm 868 MHz)	-	mA
	BLE TX Mode	-	12.7（@4.0 dBm）	-	mA
Sleep Current	With Ch340	-	20		uA

Operating Voltage

Feature	Minimum	Typical	Maximum	Unit
VCC	2.0	3.3	3.6	V

Schematic Diagram

Figure 1: RAK11722 Schematic Diagram

WisConnector: The core module allows the RAK11722 stamp module pinout to be transferred by the board-to-board WisConnector.
WisConnector Pin Order: The pin order of the WisConnector is located in the bottom layer of the module.
Core Module: The core module itself has a RAK11720 at its core, and it shows the core module pin and connection information.
SWD Interface: The breakout module exposes an SWD debug interface. Additionally, the RST pin is used for resetting the core module RAK11720.