RAK3244 BastWAN Breakout Board Datasheet
Overview
Description
The RAK3244 BastWAN Breakout Board is designed to be compatible with the Feather format while leveraging the capabilities of the RAK4260 module. At its core, the board features the RAK4260, a module built around the ATSAMR34J18B SiP. This high level of integration delivers exceptional performance, including LoRa TX power of up to 20 dBm.
A key feature of this breakout board is the ATECC606A cryptographic co-processor, which provides secure, hardware-based key storage. This sets the RAK3244 BastWAN apart from the RAK4200 and RAK4600 by adding an extra layer of security to future-proof your platform.
The board complies with LoRaWAN 1.0.2 specification, and it also supports LoRa P2P Point-to-Point communication. The low power, long-range LoRa communication capabilities of the board make it suitable for a variety of applications in the IoT field such as home automation, sensor networks, building automation, and personal area networks applications such as health/fitness sensors and monitors.
Features
- Feather compatible with a feather-like weight of 5 grams
- RAK4260 @ 48 MHz with 3.3 V logic/power
- 256 KB of FLASH + 32KB of RAM
- 32.768 kHz crystal for clock generation & RTC
- 3.3 V regulator with 500 mA peak current output
- USB native support, comes with a USB bootloader and serial port debugging
- Up to 20 GPIO pins
- Hardware Serial, hardware I2C, hardware SPI support
- PWM outputs on all pins
- 6 x 12-bit analog inputs
- 1 x 10-bit analog output (DAC)
- Built-in 100 mA LiPoly charging port, with LED indicator
- Programmable built-in LED for customized applications
- Power/enable pin
- Four (4) mounting holes
- Reset button
Specifications
Overview
The RAK3244 BastWAN Breakout Board is shown in Figure 1, which displays the top and back view of the board, respectively.
Block Diagram
The block diagram of the RAK3244 BastWAN illustrates the various interfaces corresponding to the functionalities outlined in the product overview.
Hardware
The hardware specification is divided into four sections, detailing the interfacing, pinouts with their corresponding functions, and diagrams. It also includes the RF and mechanical parameters of the RAK3244 BastWAN Breakout Board.
Interfaces
Figure 3 shows the overview of interfaces available on the RAK3244 BastWAN Breakout Board.
SWD Programming Interface
When programming using a DAPLink tool, ensure that all four (4) of the following pins are connected to your DAPLink tool:
- 3V3
- SWDIO
- SWCLK
- GND
It is recommended to leave these pins exposed for programming purposes and avoid remapping them as GPIOs.
The proper connection between the DapLink tool and RAK3244 BastWAN Breakout Board is illustrated in Figure 4.
I2C Interface
I2C_SCL and I2C_SDA are connected to the ATECC608A crypto chip, enabling the development of cryptographic applications such as network end-point key management, small message and PII data encryption, secure boot and protected downloads, ecosystem control, and anti-cloning. Additional I2C peripherals can be integrated using the breakout pins on connector J3.
RF Interface
The RF pin of the RAK4260 module is wired to an SMA antenna connector.
Pin Definition
The following tables show the pin definition of the RAK3244 BastWAN Breakout Board:
J2 Pin Definitions
| Pin | Name | I/O | Description |
|---|---|---|---|
| 1 | RST | - | MCU reset |
| 2 | 3V3 | - | 3V3 Power |
| 3 | GND | - | GND |
| 4 | GND | - | GND |
| 5 | A0 | I/O | PA09 |
| 6 | A1 | I/O | PA08 |
| 7 | A2 | I/O | PA07 |
| 8 | A3 | I/O | PA06 |
| 9 | A4 | I/O | PA04 |
| 10 | D3 | I/O | PB03 |
| 11 | SCK | I/O | PB23 |
| 12 | MOSI | I/O | PB02 |
| 13 | MISO | I/O | PA23 |
| 14 | RX | I/O | PA19 |
| 15 | TX | I/O | PA18 |
| 16 | GND | - | GND |
J3 Pin Definitions
| Pin | Name | I/O | Description |
|---|---|---|---|
| 1 | BATT | - | Battery Power |
| 2 | EN | - | Enable Pin for charging chip |
| 3 | VBUS | - | USB Power |
| 4 | D13 | I/O | PA22 |
| 5 | D12 | I/O | PA28 |
| 6 | D11 | I/O | PA05 |
| 7 | D10 | I/O | PA14 |
| 8 | D9 | I/O | PA15 |
| 9 | D6 | I/0 | PB22 |
| 10 | D5 | I/0 | PB27 |
| 11 | SCL | I/O | SCL |
| 12 | SDA | I/O | SDA |
J5 Pin Definitions
| Pin | Name | I/O | Description |
|---|---|---|---|
| 1 | 3V3 | - | 3V3 Power |
| 2 | SWDIO | I/O | PA31 |
| 3 | SWCLK | I/O | PA30 |
| 4 | GND | - | GND |
RF Characteristics
Operating Frequencies
The RAK3244 Breakout Board supports the following LoRa bands:
| Region | Frequency (MHz) |
|---|---|
| Europe | EU868 |
| North America | US915 |
| Australia | AU915 |
| Asia | AS923 |
Sensitivity Level
The following charts show the receiving sensitivity of RAK3244 BastWAN at 866 Mhz operating frequency.
Mechanical Characteristics
Board Dimensions
Figure 9 shows the actual dimensions of the RAK3244 BastWAN Breakout Board measured in millimeters (mm).
