EFR32MG21B020F512IM32
SPECS
Key Specs
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MCU Core
ARM Cortex-M33
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Core Frequency (MHz)
80
|
Flash (kB)
512
|
||
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RAM (kB)
64
|
Secure Vault
High
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Max Output Power
20
|
||
|
GPIO
20
|
Temperature (Min)
-40
|
Temperature (Max)
125
|
||
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Package Type
QFN32
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Zigbee Capable*
Yes
|
Thread Capable
Yes
|
||
|
Bluetooth Low Energy Capable
No
|
2.4 GHz Capable
Yes
|
Sub-GHz Capable
No
|
||
|
MCU Core
ARM Cortex-M33
|
|
Core Frequency (MHz)
80
|
|
Flash (kB)
512
|
|
RAM (kB)
64
|
|
Secure Vault
High
|
|
Max Output Power
20
|
|
GPIO
20
|
|
Temperature (Min)
-40
|
|
Temperature (Max)
125
|
|
Package Type
QFN32
|
|
Zigbee Capable*
Yes
|
|
Thread Capable
Yes
|
|
Bluetooth Low Energy Capable
No
|
|
2.4 GHz Capable
Yes
|
|
Sub-GHz Capable
No
|
EFR32xG21 Wireless Gecko Starter Kit
The EFR32xG21 Wireless Gecko Starter Kit (SLWSTK6006A) includes everything needed to enable developers to create a mesh network and evaluate the EFR32xG21A with Secure Element and the EFR32xG21B with Secure Vault Series 2 Wireless Gecko SoCs. This kit provides the common baseboard and comes with 6 xG21A modules (SLWRB418xA). If you want to evaluate the EFR32xG21B you must buy the xG21B modules (SLWRB4181C +10 dBm) separately.
EFR32xG21 Wireless Gecko Starter Kit
The EFR32xG21 Wireless Gecko Starter Kit (SLWSTK6006A) includes everything needed to enable developers to create a mesh network and evaluate the EFR32xG21A with Secure Element and the EFR32xG21B with Secure Vault Series 2 Wireless Gecko SoCs. This kit provides the common baseboard and comes with 6 xG21A modules (SLWRB418xA). If you want to evaluate the EFR32xG21B you must buy the xG21B modules (SLWRB4181C +10 dBm) separately.
EFR32xG21 Wireless 2.4 GHz Pro Kit +20 dBm
The EFR32xG21 Pro Kit, xG21-PK6027A, is designed to support the development of wireless IoT devices based on the EFR32xG21 Rev D +20 dBm SoC and support the development of wireless protocols including Bluetooth LE, Bluetooth Mesh, Thread (for Matter) and Zigbee.
EFR32xG21 Wireless 2.4 GHz Pro Kit +20 dBm
The EFR32xG21 Pro Kit, xG21-PK6027A, is designed to support the development of wireless IoT devices based on the EFR32xG21 Rev D +20 dBm SoC and support the development of wireless protocols including Bluetooth LE, Bluetooth Mesh, Thread (for Matter) and Zigbee.
EFR32xG21B Rev D Wireless 2.4 GHz +20 dBm Radio Board
The EFR32xG21B Rev D +20 dBm SoC Radio Board, xG21-RB4196B, is designed work with the Wireless Pro Kit Main board (not included) to support the development of wireless IoT devices based on 2.4 GHz wireless protocols including Bluetooth LE, Bluetooth Mesh, Thread (for Matter) and Zigbee.
EFR32xG21B Rev D Wireless 2.4 GHz +20 dBm Radio Board
The EFR32xG21B Rev D +20 dBm SoC Radio Board, xG21-RB4196B, is designed work with the Wireless Pro Kit Main board (not included) to support the development of wireless IoT devices based on 2.4 GHz wireless protocols including Bluetooth LE, Bluetooth Mesh, Thread (for Matter) and Zigbee.
EFR32xG21B Wireless Gecko 2.4 GHz +10 dBm Radio Board with Secure Vault
The Wireless Gecko SLWRB4181C wireless radio board plugs into the Main Board provided with the EFR32xG21 Wireless Gecko Starter Kit or the EFR32xG21 Bluetooth Starter Kit and must be purchased separately from either of those kits. The starter kits include access to Zigbee, Thread, and Bluetooth software stacks with the highest level of IoT security provided by Secure Vault.
EFR32xG21B Wireless Gecko 2.4 GHz +10 dBm Radio Board with Secure Vault
The Wireless Gecko SLWRB4181C wireless radio board plugs into the Main Board provided with the EFR32xG21 Wireless Gecko Starter Kit or the EFR32xG21 Bluetooth Starter Kit and must be purchased separately from either of those kits. The starter kits include access to Zigbee, Thread, and Bluetooth software stacks with the highest level of IoT security provided by Secure Vault.
EFR32xG21A Wireless Gecko 2.4 GHz +10 dBm Radio Board
The Wireless Gecko SLWRB4181B wireless radio board plugs into the Main Board provided with the Wireless Gecko Starter Kit. The starter kit includes access to Zigbee, Thread, and Bluetooth software stacks.
EFR32xG21A Wireless Gecko 2.4 GHz +10 dBm Radio Board
The Wireless Gecko SLWRB4181B wireless radio board plugs into the Main Board provided with the Wireless Gecko Starter Kit. The starter kit includes access to Zigbee, Thread, and Bluetooth software stacks.
EFR32xG21A Wireless Gecko 2.4 GHz +20 dBm Radio Board
The Wireless Gecko SLWRB4180B wireless radio board plugs into the Main Board provided with the Wireless Gecko Starter Kit. The starter kit includes access to Zigbee, Thread, and Bluetooth software stacks.
EFR32xG21A Wireless Gecko 2.4 GHz +20 dBm Radio Board
The Wireless Gecko SLWRB4180B wireless radio board plugs into the Main Board provided with the Wireless Gecko Starter Kit. The starter kit includes access to Zigbee, Thread, and Bluetooth software stacks.
EFR32xG21 Bluetooth Starter Kit
The EFR32xG21 Bluetooth Starter Kit supports Bluetooth 5.1 and comes ready to connect to your phone via the Silicon Labs Bluetooth LE mobile app. This Kit comes with an EFR32xG21A with Secure Element 2.4 GHz wireless SOC is optimized for line-powered BLE and Bluetooth mesh applications, including connected lighting, smart plugs, gateways, and voice assistants. Optionally, if you want to evaluate the EFR32xG21B with Secure Vault, you can purchase an xG21B module (SLWRB4181C +10 dBm) separately.
EFR32xG21 Bluetooth Starter Kit
The EFR32xG21 Bluetooth Starter Kit supports Bluetooth 5.1 and comes ready to connect to your phone via the Silicon Labs Bluetooth LE mobile app. This Kit comes with an EFR32xG21A with Secure Element 2.4 GHz wireless SOC is optimized for line-powered BLE and Bluetooth mesh applications, including connected lighting, smart plugs, gateways, and voice assistants. Optionally, if you want to evaluate the EFR32xG21B with Secure Vault, you can purchase an xG21B module (SLWRB4181C +10 dBm) separately.
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TECH DOCS
SOFTWARE & TOOLS
EFR32xG21 Wireless Gecko Starter Kit
The EFR32xG21 Wireless Gecko Starter Kit (SLWSTK6006A) includes everything needed to enable developers to create a mesh network and evaluate the EFR32xG21A with Secure Element and the EFR32xG21B with Secure Vault Series 2 Wireless Gecko SoCs. This kit provides the common baseboard and comes with 6 xG21A modules (SLWRB418xA). If you want to evaluate the EFR32xG21B you must buy the xG21B modules (SLWRB4181C +10 dBm) separately.
EFR32xG21 Wireless Gecko Starter Kit
The EFR32xG21 Wireless Gecko Starter Kit (SLWSTK6006A) includes everything needed to enable developers to create a mesh network and evaluate the EFR32xG21A with Secure Element and the EFR32xG21B with Secure Vault Series 2 Wireless Gecko SoCs. This kit provides the common baseboard and comes with 6 xG21A modules (SLWRB418xA). If you want to evaluate the EFR32xG21B you must buy the xG21B modules (SLWRB4181C +10 dBm) separately.
EFR32xG21 Wireless 2.4 GHz Pro Kit +20 dBm
The EFR32xG21 Pro Kit, xG21-PK6027A, is designed to support the development of wireless IoT devices based on the EFR32xG21 Rev D +20 dBm SoC and support the development of wireless protocols including Bluetooth LE, Bluetooth Mesh, Thread (for Matter) and Zigbee.
EFR32xG21 Wireless 2.4 GHz Pro Kit +20 dBm
The EFR32xG21 Pro Kit, xG21-PK6027A, is designed to support the development of wireless IoT devices based on the EFR32xG21 Rev D +20 dBm SoC and support the development of wireless protocols including Bluetooth LE, Bluetooth Mesh, Thread (for Matter) and Zigbee.
EFR32xG21B Rev D Wireless 2.4 GHz +20 dBm Radio Board
The EFR32xG21B Rev D +20 dBm SoC Radio Board, xG21-RB4196B, is designed work with the Wireless Pro Kit Main board (not included) to support the development of wireless IoT devices based on 2.4 GHz wireless protocols including Bluetooth LE, Bluetooth Mesh, Thread (for Matter) and Zigbee.
EFR32xG21B Rev D Wireless 2.4 GHz +20 dBm Radio Board
The EFR32xG21B Rev D +20 dBm SoC Radio Board, xG21-RB4196B, is designed work with the Wireless Pro Kit Main board (not included) to support the development of wireless IoT devices based on 2.4 GHz wireless protocols including Bluetooth LE, Bluetooth Mesh, Thread (for Matter) and Zigbee.
EFR32xG21B Wireless Gecko 2.4 GHz +10 dBm Radio Board with Secure Vault
The Wireless Gecko SLWRB4181C wireless radio board plugs into the Main Board provided with the EFR32xG21 Wireless Gecko Starter Kit or the EFR32xG21 Bluetooth Starter Kit and must be purchased separately from either of those kits. The starter kits include access to Zigbee, Thread, and Bluetooth software stacks with the highest level of IoT security provided by Secure Vault.
EFR32xG21B Wireless Gecko 2.4 GHz +10 dBm Radio Board with Secure Vault
The Wireless Gecko SLWRB4181C wireless radio board plugs into the Main Board provided with the EFR32xG21 Wireless Gecko Starter Kit or the EFR32xG21 Bluetooth Starter Kit and must be purchased separately from either of those kits. The starter kits include access to Zigbee, Thread, and Bluetooth software stacks with the highest level of IoT security provided by Secure Vault.
EFR32xG21A Wireless Gecko 2.4 GHz +10 dBm Radio Board
The Wireless Gecko SLWRB4181B wireless radio board plugs into the Main Board provided with the Wireless Gecko Starter Kit. The starter kit includes access to Zigbee, Thread, and Bluetooth software stacks.
EFR32xG21A Wireless Gecko 2.4 GHz +10 dBm Radio Board
The Wireless Gecko SLWRB4181B wireless radio board plugs into the Main Board provided with the Wireless Gecko Starter Kit. The starter kit includes access to Zigbee, Thread, and Bluetooth software stacks.
EFR32xG21A Wireless Gecko 2.4 GHz +20 dBm Radio Board
The Wireless Gecko SLWRB4180B wireless radio board plugs into the Main Board provided with the Wireless Gecko Starter Kit. The starter kit includes access to Zigbee, Thread, and Bluetooth software stacks.
EFR32xG21A Wireless Gecko 2.4 GHz +20 dBm Radio Board
The Wireless Gecko SLWRB4180B wireless radio board plugs into the Main Board provided with the Wireless Gecko Starter Kit. The starter kit includes access to Zigbee, Thread, and Bluetooth software stacks.
EFR32xG21 Bluetooth Starter Kit
The EFR32xG21 Bluetooth Starter Kit supports Bluetooth 5.1 and comes ready to connect to your phone via the Silicon Labs Bluetooth LE mobile app. This Kit comes with an EFR32xG21A with Secure Element 2.4 GHz wireless SOC is optimized for line-powered BLE and Bluetooth mesh applications, including connected lighting, smart plugs, gateways, and voice assistants. Optionally, if you want to evaluate the EFR32xG21B with Secure Vault, you can purchase an xG21B module (SLWRB4181C +10 dBm) separately.
EFR32xG21 Bluetooth Starter Kit
The EFR32xG21 Bluetooth Starter Kit supports Bluetooth 5.1 and comes ready to connect to your phone via the Silicon Labs Bluetooth LE mobile app. This Kit comes with an EFR32xG21A with Secure Element 2.4 GHz wireless SOC is optimized for line-powered BLE and Bluetooth mesh applications, including connected lighting, smart plugs, gateways, and voice assistants. Optionally, if you want to evaluate the EFR32xG21B with Secure Vault, you can purchase an xG21B module (SLWRB4181C +10 dBm) separately.
QUALITY & PACKAGING
Quality Assurance, Environmental and Packaging Information
Silicon Labs targets a minimum of a 10-year lifecycle for all of its standard products and expects to produce the EFR32MG21B020F512IM32 until at least April 2029.
The longevity date shown above is for the preferred revision of this part number, for a complete list of part number revisions, use the search button below.
As part of its ongoing commitment to supply continuity, Silicon Labs may provide pin-compatible and functionally equivalent replacement products if Silicon Labs determines, at its discretion, that supply chain adjustments, product improvements, market conditions, or similar business or technical issues make this necessary or advisable.
If for business, technical or other reasons beyond Silicon Labs’ reasonable control, Silicon Labs finds that it is necessary to discontinue a product, our policy is to issue an EOL notice that provides 6 months from notice to place final orders and 12 months from notice for final shipments. This policy complies with the JEDEC standard EIA/JESD48 that is commonly used in the semiconductor industry. We provide the required support for a product for its full life cycle.
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