There is an on-board 2.4GHz radio peripheral used to provide Bluetooth and custom radio capabilities via an off-chip aerial. ![]() The nRF52 application processor is where user programs run.Ī single, complete application including user code, runtime code and Bluetooth stack is loaded and run directly from on-chip flash memory.Īll user accessible GPIO pins are provided by this processor. Hardware Description nRF52 Application Processor The reference design, which is a complete module design of a compatible micro:bit, and is designed to be a starting point for anyone interested in understanding the micro:bit or designing their own variant. The schematics, which shows the detailed component data and connectivity of the device. Two key pieces of information to help understand the internals of the micro:bit are: The interface processor does not connect to any of the micro:bit peripherals. Other peripherals are connected to this chip.Īn interface processor is connected to the application processor and manages communications via the USB interface, including the drag-and-drop code flashing process. The micro:bit is an easily programmable Single Board Computer (SBC) that contains an application processor with a variety of on-chip peripherals.
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