https://www.silabs.com/wireless/bluetooth/efr32bg22-series-2-modules/device.bgm220sc12wga?tab=specs
BGM220SC12WGA BGM220 Bluetooth 5.2 SiP - Silicon Labs - Silicon Labs
BGM220SC12WGA (BGM220 Series 2) Bluetooth 5.2 SiP module includes 352 kB of flash, 32 kB of RAM, and is available in a 6.0 x 6.0 x 1.1 SIP package.
bluetoothsipsiliconlabs