CW308T-EFR32MG21#
The EFR32MG21A board features the EFR32MG21A010F1024 from Silicon Labs. This device features a number of security features, including a dedicated “Secure Element” core that performs a secure boot operation, and DPA countermeasures on cryptographic primitives.
The RF section is not broken out to a 50-ohm matched header, but instead a simple 3-pin header which allows potential usage in laboratory environments.
See the -SOCKET board for an optional socket version. See the -MG21B board for the version with ‘Secure Vault’.
Warning
This target requires an external programmer to reload code.
Quick Links#
Specifications#
Feature |
Notes/Range |
|---|---|
Target Device |
EFR32MG21A010F1024, EFR32MG21A020F1024, EFR32MG21B010F1024 |
Target Architecture |
Arm Cortex M33 |
Vcc |
1.2V |
Programming |
JTAG |
Hardware Crypto |
Yes |
Availability |
Standalone |
Status |
Production |
Shunt |
22-ohm |
Power Supply#
Break-out for various voltage rails, allowing over-driving of internal regulator to reduce noise for DPA measurements, or for testing fault injection detection capability.
Security Features#
EFR32MG21A (“Mighty Gecko Multiprotocol Wireless SoC”) has a high-performance Cortex M33 (TrustZone-M) with a separate “secure element” core that handles the secure boot operation, along with multiple cryptographic accelerators (both AES and ECC) that include advertised DPA countermeasures.
‘A’ vs ‘B’ Variants#
The devices is available in a variant with the ‘secure vault’ option. These are referred to as the MG21B version.
Programming#
A JTAG programmer is typically required for these devices.