4 Bluetooth Stack Microcontroller
The CSR8635 QFN uses a 16-bit RISC 80MHz MCU for low power consumption and efficient use of memory. It contains
a single-cycle multiplier and a memory protection unit for the VM accelerator, see Section 4.1.
The MCU, interrupt controller and event timer run the Bluetooth software stack and control the Bluetooth radio and host
interfaces.
4.1 VM Accelerator
CSR8635 QFN contains a VM accelerator alongside the MCU. This hardware accelerator improves the performance
of VM applications.
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