The BGM220 Bluetooth modules are numerous and there are difference either in what they can do or how they are shipped. Some modules are sold in a tube format or in a strip form. These are the Silicon Labs Wireless Gecko version and you can see what each one offers. First the hardware and then the comparisons between the different versions of the BGM220 Bluetooth Modules.
BGM220 Bluetooth Modules
Lets first look at the features and then the usage of these modules. You will see how they are used and what they offer.
The BGM220 offers the following features and the first is lower power. If we look at how this modules are used we can see that having ultra low power draw is very important.
- 4.8 mA TX (0 dBm)
- 4.3 mA RX
- 1.4 µA EM2 with 32 kB RAM
- 0.5 µA with RTC in EM4
The security on the modules is also important. If security is an issue with Bluetooth the encryption on the module becomes important. When using these types of modules you should also ensure that there is ECC as well as a true number generator. This is very important when it comes to ensuring that the encryption is good. All of this with a secure boot which has become a very good selling point today with wireless products.
- AES128/256, SHA-1, SHA-2 (256-bit)
- ECC (up to 256-bit), ECDSA and ECDH
- True random number generator (TRNG)
- Secure boot with RTSL
- Secure debug with lock/unlock
These Bluetooth modules you will find in a number of applications. Many range from smart home technologies as well as appliances, remote controls as well as drone and medical equipment. With more industrialization as the advert of more automation, these Bluetooth modules become more important and security even more important.
Firstly the radio offers Bluetooth 5.2 this with the +8 dBm TX as well as the -106.7 dBm RX (125 Kbps) transmit and receive ability. Secondly the modules offers Bluetooth Mesh LPN which has been a new development over the past few years. The software also allows for direction finding so as to enhance the mesh ability. These modules allows for remote locations as well as for ensuring a connection. We can hence see why these technologies have become very important over the years.
Finally these modules also offer 2x USART as well as 2x I2C and finally 2x PDM, and GPIO. These all with a 16-bit ADC which has 16 channels. The RFSense wake-on radio allows for power saving on the modules and comes with a built-in temperature sensor with ±1.5°C. With the 32 kHz, 500 ppm PLFRCO it also allows you to eliminates crystal.
Building automation has made extensive use of the modules as well as battery powered sensors. You will also find many of these BGM220 Bluetooth modules is beacons and other remote applications such as on/off control switches as well as using it as asset tags. You can also see the ft232r usb uart driver and the BlueSoleil generic Bluetooth driver on here.
Compare BGM220 Bluetooth Modules (12WGA2)
These are the modules for the BGM220SC12WGA2 module and the BGM220SC12WGA2R version. These end in W12GA2 at the end of their names. There is also the BGM220PC22HNA2R, BGM220PC22HNA2, BGM220PC22WGA2R as well as the BGM220PC22WGA2 versions which end in 22WGA2.
Lets compare all these modules and see what is the main difference. You will notice that when it comes to the different versions of these modules. Firstly they are exactly the same and only their packaging differs. The one arrives in a tray while the other has the tape & reel and cut tape shipping. This is mainly for producers of equipment who buy these modules. It does not affect the consumer in this regard. Both these versions are from the base of the BGM220 modules. See the following table for other modules and their differences.
|Voltage – Supply||1.8V ~ 3.8V||1.8V ~ 3.8V|
|Serial Interfaces||ADC, I²C, I²S, PWM, SPI, IrDA, UART, USART||ADC, I²C, I²S, PWM, SPI, IrDA, UART, USART|
|Protocol||Bluetooth v5.2||Bluetooth v5.2|
|Frequency||2.4GHz ~ 2.4835GHz||2.4GHz ~ 2.4835GHz|
|Mounting Type||Surface Mount||Surface Mount|
|Package||Tray||Tape & Reel (TR) Cut Tape (CT)|
|Memory Size||352kB Flash, 32kB RAM||352kB Flash, 32kB RAM|
|Antenna Type||Integrated, Chip||Integrated, Chip|
Compare BGM220 Bluetooth Modules (22WGA2)
The next modules comes from the same range but differ in what they offer compared to the above two. There are hardware differences and not just packaging differences. The two versions will hold advantages for different usage applications that you might have.
Note that there are four chips here being the BGM220SC22WGA2, BGM220SC22WGA2R, BGM220SC22HNA2 and BGM220SC22HNA2R. I have simply removed the front numbers to make them all fit next to each other. These are the BGM220SC series.
|Voltage – Supply||1.8V ~ 3.8V||1.8V ~ 3.8V||1.8V ~ 3.8V||1.8V ~ 3.8V|
|Serial Interfaces||ADC, I²C, I²S, PWM, SPI, IrDA, UART, USART||ADC, I²C, I²S, PWM, SPI, IrDA, UART, USART||ADC, I²C, I²S, PWM, SPI, IrDA, UART, USART||ADC, I²C, I²S, PWM, SPI, IrDA, UART, USART|
|Protocol||Bluetooth v5.2||Bluetooth v5.2||Bluetooth v5.2||Bluetooth v5.2|
|Frequency||2.4GHz ~ 2.4835GHz||2.4GHz ~ 2.4835GHz||2.4GHz ~ 2.4835GHz||2.4GHz ~ 2.4835GHz|
|Mounting Type||Surface Mount||Surface Mount||Surface Mount||Surface Mount|
Tape & Reel (TR)
Cut Tape (CT)
|Tray||Tape & Reel (TR)
Cut Tape (CT)
|Memory Size||352kB Flash, 32kB RAM||352kB Flash, 32kB RAM||512kB Flash, 32kB RAM||512kB Flash, 32kB RAM|
|Antenna Type||Integrated, Chip||Integrated, Chip||Integrated, Chip||Integrated, Chip|
Firstly these are all the chip in this series. Secondly there are a total of six BGM220 Bluetooth modules as you can see. Note that half of these is mainly the packaging of the chips and nothing else. Finally in reality there are only three chips which are different and you can see where and how they are different above.
BGM220 Bluetooth Development Kit
There are a number of development kits based on this modules.
UG432: BGM220P Wireless Gecko Module
This is the BRD4311A which contains the BGM220P Module, and it is a plug-in board for the Wireless Starter Kit Mainboard. These are from Silicon Labs and a good way to learn. It is models SLWSTK6103A as well as SLWRB4311A.
BGM220P Wireless Gecko PCB Module with 512 kB Flash, 32 kB RAM. Its has a fully integrated antenna on chip. There is also RF matching network, crystals, and decoupling capacitors (BGM220PC22HNA2). All of this with an 8 Mbit low-power serial flash for over air upgrades. This makes it extremely portable and lows the cost of maintenance.
There are a few things that are very convenient on this module. There is a Packet Trace Interface as well as the Virtual COM Port as well as an SEGGER J-Link on-board debugger and Ethernet and USB connectivity. Much like other boards from Silicon Labs there is also a Silicon Labs Si7021 Relative Humidity and Temperature sensor which becomes very handy when dealing with monitoring remote locations where the board is located. It also allows for a low power 128×128 pixel memory LCD as well as other breakout pads. There is also CR2032 coin cell battery support. Finally see also the D Link DBT 120 as well as the Chicony usb 2.0 camera and D-Link DFB-A5 USB on here as well.
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