1.. _thingy53_nrf5340:
2
3Thingy:53
4#########
5
6Overview
7********
8
9Zephyr uses the ``thingy53/nrf5340`` board configuration for building
10for the Thingy:53 board. The board has the nRF5340 MCU processor, a set of
11environmental sensors, a pushbutton, and RGB LED.
12
13The nRF5340 is a dual-core SoC based on the Arm® Cortex®-M33 architecture, with:
14
15* a full-featured Arm Cortex-M33F core with DSP instructions, FPU, and
16  Armv8-M Security Extension, running at up to 128 MHz, referred to as
17  the **application core**
18* a secondary Arm Cortex-M33 core, with a reduced feature set, running at
19  a fixed 64 MHz, referred to as the **network core**.
20
21The ``thingy53/nrf5340/cpuapp`` build target provides support for the application
22core on the nRF5340 SoC. The ``thingy53/nrf5340/cpunet`` build target provides
23support for the network core on the nRF5340 SoC.
24
25The `Nordic Thingy:53 Hardware guide`_ contains the processor's information and
26the datasheet.
27
28Programming and Debugging
29*************************
30
31Flashing
32========
33
34Flashing Zephyr onto Thingy:53 requires an external J-Link programmer. The
35programmer is attached to the P9 programming header.
36
37Debugging
38=========
39
40Thingy:53 does not have an on-board J-Link debug IC as some other nRF5
41development boards, however, instructions from the :ref:`nordic_segger` page
42also apply to this board, with the additional step of connecting an external
43debugger. A development board with a Debug out connector such as the
44:ref:`nrf5340dk_nrf5340` can be used as a debugger with Thingy:53.
45
46References
47**********
48
49.. target-notes::
50
51.. _Nordic Thingy:53 Hardware guide: https://docs.nordicsemi.com/bundle/ug_thingy53/page/UG/thingy53/intro/frontpage.html
52