RF-BM-BG22A3(I) EFR32BG22C224 Bluetooth 5.2 Low Energy Module Version 1.3 Shenzhen RF-star Technology Co., Ltd.
RF-BM-BG22A3(I) www.szrfstar.com V1.3 - Aug., 2022 1 Device Overview 1.1 Module Series There is a series of RF-BM-BG22Ax Bluetooth 5.2 Low Energy modules. All of them are based on Silicon Labs EFR32BG22 SoC series. Because the EFR32BG22 series ICs are compatible in package, pins, and peripherals, those modules are pin-to-pin compatible with each other as well. Table 1. Module Series of RF-BM-BG22Ax Max. CPU TX Speed Power EFR32BG22C112F352GM32-C 38.4 MHz EFR32BG22C112F352GM32-C 38.
RF-BM-BG22A3(I) www.szrfstar.com V1.3 - Aug., 2022 • TX power: -28 dBm ~ 6 dBm ⬧ UART • Sensitivity ⬧ SPI - -98.9 dBm @ 1 Mbit/s GFSK ⬧ SmartCard (ISO 7816) - -96.2 dBm @ 2 Mbit/s GFSK ⬧ IrDA - -106.7 dBm @ 125 kbit/s GFSK ⬧ I2S • 32-bit 76.
RF-BM-BG22A3(I) www.szrfstar.com V1.3 - Aug., 2022 1.5 Functional Block Diagram 38.4 MHz PCB Antenna / IPEX Connetor GPIOs Debug EFR32 BG22 Antenna Matching Matching Low-Pass Filter Reset Antenna Switch Half-Hole ANT Pin Power Supply DC-DC mode: 2.2 V to 3.8 V Bypass mode: 1.8 V to 3.8 V Figure 1. Functional Block Diagram of RF-BM-BG22A3(I) 1.
RF-BM-BG22A3(I) www.szrfstar.com V1.3 - Aug., 2022 Table of Contents 1 Device Overview ............................................................................................................................................................. 1 1.1 Module Series ..................................................................................................................................................... 1 1.2 Description..............................................................................
RF-BM-BG22A3(I) www.szrfstar.com V1.3 - Aug., 2022 5.6.1 Unsatisfactory Transmission Distance........................................................................................ 20 5.6.2 Vulnerable Module .............................................................................................................................. 21 5.6.3 High Bit Error Rate ............................................................................................................................. 21 5.
RF-BM-BG22A3(I) www.szrfstar.com V1.3 - Aug., 2022 Table 3. Pin Functions of RF-BM-BG22A3(I) ................................................................................................. 8 Table 4. Recommended Operating Conditions of RF-BM-BG22A3(I) ................................................ 10 Table 5. Handling Ratings of RF-BM-BG22A3(I) ........................................................................................ 10 Table 6. Current Consumption of RF-BM-BG22A3(I) ...................
RF-BM-BG22A3(I) www.szrfstar.com V1.3 - Aug., 2022 2 Module Configuration and Functions 2.1 Module Parameters Table 2. Parameters of RF-BM-BG22A3(I) Chipset Supply Power Voltage EFR32BG22C224F512GM32-C DC-DC mode: 2.2 V ~ 3.8 V, recommended to 3.3 V Bypass mode: 1.8 V ~ 3.8 V, recommended to 3.3 V Frequency 2402 MHz ~ 2480 MHz Transmit Power -28.0 dBm ~ 6 dBm (typical: 0 dBm) -98.9 dBm sensitivity @ 1 Mbit/s GFSK Receiving Sensitivity -96.2 dBm sensitivity @ 2 Mbit/s GFSK -106.
RF-BM-BG22A3(I) www.szrfstar.com V1.3 - Aug., 2022 2.2 Module Pin Diagram RF-BM-BG22A1 RF-BM-BG22A1I Figure 3. Pin Diagram of RF-BM-BG22A3(I) 2.3 Pin Functions Table 3. Pin Functions of RF-BM-BG22A3(I) Pin Name Chip Pin Pin Type 1 EXT_ANT - - 2 PB02 PB02 I/O GPIO 3 PB01 PB01 I/O GPIO 4 PB00 PB00 I/O GPIO 5 PA00 PA00 - GPIO 6 PA03 PA03 I/O GPIO 7 PA04 PA04 I/O GPIO 8 PA05 PA05 I/O GPIO 9 PA06 PA06 I/O GPIO 10 GND GND - Shenzhen RF-star Technology Co.
RF-BM-BG22A3(I) www.szrfstar.com V1.3 - Aug., 2022 Reset, active low, internal pull-up. The max. power 11 RESET RESET supply of this pin is 1.8 V under DC-DC mode.
RF-BM-BG22A3(I) www.szrfstar.com V1.3 - Aug., 2022 3 Specifications 3.1 Recommended Operating Conditions The functional operation does not guarantee performance beyond the limits of the conditional parameter values in the table below. Long-term work beyond this limit will affect the reliability of the module more or less. Table 4. Recommended Operating Conditions of RF-BM-BG22A3(I) Items Condition Min. Typ. Max. Unit DC-DC mode 2.2 3.3 3.8 V Bypass mode 1.8 3.3 3.
RF-BM-BG22A3(I) www.szrfstar.com V1.3 - Aug., 2022 Note: The test method is closely related to the current. For example, the output load antenna is different from the standard 50 Ω test data. Shenzhen RF-star Technology Co., Ltd.
RF-BM-BG22A3(I) www.szrfstar.com V1.3 - Aug., 2022 4 Setting of Frequency Offset Register The setting of the frequency offset register can be regarded as the auxiliary setting of modifying the frequency offset for the hardware RF part. If the frequency offset is needed to be modified, you can find the sl_device_init_hfxo_config.h file in the corresponding project and modify the CTUNE value.
RF-BM-BG22A3(I) www.szrfstar.com V1.3 - Aug., 2022 Find SL_DEVICE_INIT_HFXO_CTUNE, the official default value of SiliconLabs is 140, RF-star changes it to 72 according to the requirements of the development board hardware RF part. Remark: This is the value for RF-star’s standard EFR32BG22 series modules, the value of the other customized products needs to be confirmed. If the user needs to change to other values, you can directly modify it (Value range: 0 ~ 255). As shown below.
RF-BM-BG22A3(I) www.szrfstar.com V1.3 - Aug., 2022 5 Application, Implementation, and Layout 5.1 Module Photos RF-BM-BG22A3 RF-BM-BG22A3I Figure 4. Photos of RF-BM-BG22A3(I) 5.2 Recommended PCB Footprint RF-BM-BG22A1 Shenzhen RF-star Technology Co., Ltd.
RF-BM-BG22A3(I) www.szrfstar.com V1.3 - Aug., 2022 RF-BM-BG22A1I Figure 5. Recommended PCB Footprint of RF-BM-BG22A3(I) (mm) 5.3 Schematic Diagram Figure 6. Schematic Diagram of RF-BM-BG22A3(I) Shenzhen RF-star Technology Co., Ltd.
RF-BM-BG22A3(I) www.szrfstar.com V1.3 - Aug., 2022 5.4 Antenna 5.4.1 Antenna Design Recommendation 1. The antenna installation structure has a great influence on the module performance. It is necessary to ensure the antenna is exposed and preferably vertically upward. When the module is installed inside of the case, a high-quality antenna extension wire can be used to extend the antenna to the outside of the case. 2.
RF-BM-BG22A3(I) www.szrfstar.com The default delivery is the V1.3 - Aug., 2022 onboard PCB antenna, and R1 (0 Ω) is well welded. If you want to use the external antenna by the ANT pin, pls disconnect the R1. The location of R1 is shown in the figure below. Figure 8. Antenna Output Mode Change of RF-BM-BG22A1 2. RF-BM-BG22A3I has two antenna output modes. The one is an IPEX connector and the other is a stamp half-hole output (ANT pin, see pin function table for details).
RF-BM-BG22A3(I) www.szrfstar.com V1.3 - Aug., 2022 Figure 11. Reference Design of the External Antenna Traces 2. The RF trace width and copper-clad spacing can be calculated by SI9000 software, and the impedance is controlled to 50 Ω according to the actual board thickness, number of layers, plate, dielectric thickness, dielectric constant, copper thickness, line width, line spacing, and solder mask thickness. Example: FR4 is a double-layer board with a thickness of 1.0 mm.
RF-BM-BG22A3(I) www.szrfstar.com V1.3 - Aug., 2022 5.4.4 IPEX Connector Specification RF-BM-BG22A3I module is integrated the IPEX version 1 antenna seat, the specification of the antenna seat is as follows: Figure 13. Specification of Antenna Seat The specification of the IPEX wire end is as follows: Figure 14. Specification of IPEX Wire Shenzhen RF-star Technology Co., Ltd.
RF-BM-BG22A3(I) www.szrfstar.com V1.3 - Aug., 2022 5.5 Basic Operation of Hardware Design 1. It is recommended to offer the module a DC stabilized power supply, a tiny power supply ripple coefficient, and reliable ground. Please pay attention to the correct connection between the positive and negative poles of the power supply. Otherwise, the reverse connection may cause permanent damage to the module; 2. Please ensure the supply voltage is between the recommended values.
RF-BM-BG22A3(I) www.szrfstar.com V1.3 - Aug., 2022 metal shell. 4. The incorrect power register set or the high data rate in the open air may shorten the communication distance. The higher the data rate, the closer the distance. 5. The low voltage of the power supply is lower than the recommended value at ambient temperature, and the lower the voltage, the smaller the power is. 6. The unmatchable antennas and modules or the poor quality of antenna will affect the communication distance. 5.6.
RF-BM-BG22A3(I) www.szrfstar.com V1.3 - Aug., 2022 Table 7. Temperature Table of Soldering and Reflow Profile Feature Sn-Pb Assembly Pb-Free Assembly Sn63 / Pb37 Sn96.5 / Ag3.0 / Cu0.5 Min. Preheating Temperature (Tmin) 100 ℃ 150 ℃ Max. Preheating Temperature (Tmax) 150 ℃ 200 ℃ Preheating Time (Tmin to Tmax) (t1) 60 s ~ 120 s 60 s ~ 120 s Average Ascend Rate (Tmax to Tp) Max. 3 ℃/s Max.
RF-BM-BG22A3(I) www.szrfstar.com V1.3 - Aug., 2022 5.9 Optional Package Specification The default package method is by tray. If you need the modules to be shipped by tape & reel, pls contact us in advance. Figure 16. Default Package by Tray Shenzhen RF-star Technology Co., Ltd.
RF-BM-BG22A3(I) www.szrfstar.com V1.3 - Aug., 2022 Figure 17. Package by Tape & Reel Shenzhen RF-star Technology Co., Ltd.
RF-BM-BG22A3(I) www.szrfstar.com V1.3 - Aug., 2022 6 Revision History Date Version No. Description 2020.09.10 V1.0 The initial version is released. 2021.01.21 V1.1 Update the unit of Flash. Modify the power supply. 2022.05.12 V1.2 Add the antenna specifications. Add the RF-BM-BG22A3I specifications. Add the setting of frequency offset register. 2022.08.12 V1.3 Add the max. power supply of the RESET pin. Note: 1. The document will be optimized and updated from time to time.
RF-BM-BG22A3(I) www.szrfstar.com V1.3 - Aug., 2022 7 Contact Us SHENZHEN RF-STAR TECHNOLOGY CO., LTD. Shenzhen HQ: Add.: C601, Skyworth Building, High-tech Park, Nanshan District, Shenzhen, Guangdong, China, 518057 Tel.: 86-755-3695 3756 Chengdu Branch: Add.: N2-1604, Global Center, North No. 1700, Tianfu Avenue, Hi-Tech District, Chengdu, Sichuan, China, 610095 Tel.: 86-28-6577 5970 Email: sunny@szrfstar.com, sales@szrfstar.com Web.: www.rfstariot.com, www.szrfstar.com Shenzhen RF-star Technology Co.
FCC Statement FCC standards: FCC CFR Title 47 Part 15 Subpart C Section 15.247 Integral PCB antenna with antenna gain -0.02dBi This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
—Reorient or relocate the receiving antenna. —Increase the separation between the equipment and receiver. —Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. —Consult the dealer or an experienced radio/TV technician for help. 2. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
