RAK3244 BastWAN Breakout Board Datasheet
Overview
Description
The RAK3244 BastWAN Breakout Board is specifically designed to be compatible with Feather format while still harnessing the power of the RAK4260 module. The board itself has the RAK4260 as its core, which is a module that utilizes ATSAMR34J18B SiP. The high level of integration allows for outstanding performance: Lora TX Power of up to 20 dBm.
A notable addition to this breakout board is the ATECC606A Cryptographic co-processor with secure hardware-based key storage. This is what makes the RAK3244 BastWAN different compared to the RAK4200 and RAK4600, adding another level 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.
Figure 5727: RAK3244 BastWAN Breakout Board Front and Back ViewBlock Diagram
The block diagram of the RAK3244 BastWAN shows the various interfaces for the specific functionalities set in the product overview.
Figure 5728: RAK3244 BastWAN Breakout Board Block DiagramHardware
The hardware specification is categorized into four parts. It discusses the interfacing, pinouts and its corresponding functions and diagrams. It also covers the RF and mechanical parameters of the RAK3244 BastWAN Breakout Board.
Interfaces
Figure 3 shows the overview of interfaces found on the RAK3244 BastWAN Breakout Board.
Figure 5729: RAK3244 BastWAN Breakout Board Interface OverviewSWD Programming Interface
When programming via a DAPLink tool, it is required to have all of the following four (4) pins connected to your DAPLink tool:
- 3V3
- SWDIO
- SWCLK
- GND
For the aforementioned reason, it is best you leave these exposed for programming purposes and not to remap them as GPIOs.
The proper connection between the DapLink tool and RAK3244 BastWAN Breakout Board is illustrated in Figure 4.
Figure 5730: RAK3244 BastWAN Breakout Board Pinout for DapLink toolI2C Interface
I2C_SCL and I2C_SDA are connected to the ATECC608A crypto chip for the purpose of developing cryptographic applications: network end-point key management and exchange small message and PII data encryption, secure boot and protected download, ecosystem control, and anti-cloning. Additional I2C peripherals can be added 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
Figure 5731: RAK3244 BastWAN Breakout Board PinoutThe following tables below 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.
Figure 5732: RAK3244 BastWAN Breakout Board Sensitivity Levels
Figure 5733: RAK3244 BastWAN Breakout Board Sensitivity Plot @ SF7
Figure 5734: RAK3244 BastWAN Breakout Board Sensitivity Plot @ SF12Mechanical Characteristics
Board Dimensions
Figure 9 shows the actual dimensions of the RAK3244 BastWAN Breakout Board measured in millimeters (mm).
Figure 5735: RAK3244 BastWAN Breakout Board Board Dimension
