Data Sheet
Table Of Contents
- 1. Features
- 2. Ordering Information
- 3. System Overview
- 4. Electrical Specifications
- 4.1 Absolute Maximum Ratings
- 4.2 General Operating Conditions
- 4.3 MCU Current Consumption at 3.0V
- 4.4 Radio Current Consumption at 3.0V
- 4.5 RF Transmitter General Characteristics
- 4.6 RF Transmitter Characteristics for 802.15.4 DSSS-OQPSK in the 2.4 GHz Band
- 4.7 RF Receiver General Characteristics
- 4.8 RF Receiver Characteristics for 802.15.4 DSSS-OQPSK in the 2.4 GHz Band
- 4.9 RF Receiver Characteristics for Bluetooth Low Energy at 1 Mbps
- 4.10 RF Receiver Characteristics for Bluetooth Low Energy at 2 Mbps
- 4.11 RF Receiver Characteristics for Bluetooth Low Energy at 500 kbps
- 4.12 RF Receiver Characteristics for Bluetooth Low Energy at 125 kbps
- 4.13 High-Frequency Crystal
- 4.14 GPIO Pins
- 4.15 Microcontroller Peripherals
- 4.16 Typical Performance Curves
- 5. Reference Diagrams
- 6. Pin Definitions
- 7. Design Guidelines
- 8. Package Specifications
- 9. Soldering Recommendations
- 10. Tape and Reel
- 11. Certifications
- 12. Revision History
3. System Overview
3.1 Block Diagram
The MGM210P module is a highly-integrated, high-performance system with all the hardware components needed to enable 2.4 GHz
wireless connectivity and to support robust networking capabilities via multiple protocols.
Built around the EFR32MG21 Wireless Gecko SoC, the MGM210P includes a chip antenna, an RF matching network (optimized for
transmit power efficiency), supply decoupling and filtering components, a 38.4 MHz reference crystal, and an RF shield. It also comes
with a 50 Ω-matched RF pin and allows the use of an external 32 kHz crystal as a low frequency reference signal via GPIO pins.
Since the RF matching networks are optimized for transmit power efficiency, modules rated for +20 dBm will show non-optimal current
consumption and performance when operated at a lower output power (e.g. +10 or 0 dBm). The same applies for modules rated for +10
dBm.
IOVDD
RFPIN
Silicon Labs
EFR32MG21
HF XTAL
Supply Decoupling
RF SHIELD
VDD
GPIO
GND
(up to 20)
RF Match
RF Match
Antenna
External LF XTAL option
Figure 3.1. MGM210P Block Diagram
3.2 EFR32MG21 SoC
The EFR32MG21 SoC features a 32-bit ARM Cortex M33 core, a 2.4 GHz high-performance radio, 1 MB of Flash memory, a dedicated
core for security, a rich set of MCU peripherals, and various clock management and serial interfacing options. Consult the EFR32xG21
Wireless Gecko Reference Manual and the EFR32MG21 Data Sheet for details.
3.3 Antenna
MGM210P modules include a ceramic chip antenna on board with the characteristics detailed in the table below. They also include a 50
Ω-matched RF pin to enable the use of an external antenna instead of the module's chip antenna. See 4.16.1 Antenna Radiation and
Efficiency and 11.1 Qualified Antennas for other relevant details.
Table 3.1. Antenna Efficiency and Peak Gain
Parameter With optimal layout Note
Efficiency -1 to -2 dB Antenna efficiency, gain and radiation pattern are highly depend-
ent on the application PCB layout and mechanical design. Refer
to Design Guidelines for recommendations to achieve optimal an-
tenna performance.
Peak gain 1.86 dBi
3.4 Power Supply
The MGM210P requires a single nominal supply level of 3.0 V to operate. However, it can support use cases needing different levels
for the main supply (VDD) and for digital IO (IOVDD). All necessary decoupling and filtering components are included in the module.
MGM210P Mighty Gecko Module Data Sheet
System Overview
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