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.. _thingy53_nrf5340:
Thingy:53
#########
Overview
********
Zephyr uses the thingy53_nrf5340 board configuration for building
for the Thingy:53 board. The board has the nRF5340 MCU processor, a set of
environmental sensors, a pushbutton, and RGB LED.
The nRF5340 is a dual-core SoC based on the Arm® Cortex®-M33 architecture, with:
* a full-featured Arm Cortex-M33F core with DSP instructions, FPU, and
Armv8-M Security Extension, running at up to 128 MHz, referred to as
the **application core**
* a secondary Arm Cortex-M33 core, with a reduced feature set, running at
a fixed 64 MHz, referred to as the **network core**.
The nrf5340dk_nrf5340_cpuapp build target provides support for the application
core on the nRF5340 SoC. The nrf5340dk_nrf5340_cpunet build target provides
support for the network core on the nRF5340 SoC.
The `Nordic Semiconductor Infocenter`_ contains the processor's information and
the datasheet.
Programming and Debugging
*************************
Flashing
========
Flashing Zephyr onto Thingy:53 requires an external J-Link programmer. The
programmer is attached to the P9 programming header.
Debugging
=========
Thingy:53 does not have an on-board J-Link debug IC as some other nRF5
development boards, however, instructions from the :ref:`nordic_segger` page
also apply to this board, with the additional step of connecting an external
debugger. A development board with a Debug out connector such as the
:ref:`nrf5340dk_nrf5340` can be used as a debugger with Thingy:53.
References
**********
.. target-notes::
.. _Nordic Semiconductor Infocenter: http://infocenter.nordicsemi.com/