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MT6627 - 4-in-1 connectivity chip which contains a Wi-Fi/Bluetooth transceiver
MT6625L - 4-in-1 connectivity chip which contains a 2.4GHz Wi-Fi/Bluetooth transceiver front-end
S3C7281 - The S3C7281 is a SAM48 core-based 4-bit CMOS single-chip microcontroller. It is built around the SAM48 core CPU and contains ROM/ RAM.
MPL2 - Contains Schottky barrier Diode and Transistor