Zigbee memory requirements

This page provides information about the amount of flash memory and RAM that is required by Zigbee samples, as well as stack memory requirements for main and zboss threads. Use it to check if your application has enough space for a given configuration. Values are provided for ZBOSS libraries.

Samples were built using the available ZBOSS Zigbee stack. Unless stated otherwise, the default prj.conf was used.

RAM and flash memory requirements

RAM and flash memory requirement values differ depending on the DK, and the programmed sample.

The following tables list memory requirement values for Zigbee samples.

Values are provided in kilobytes (KB). n/a indicates that the sample with the given variant is not supported on the DK.

nRF52840nRF52833nRF5340nRF21540nRF52840 Dongle

The following table lists memory requirements for samples running on the nRF52840 DK (nrf52840dk_nrf52840).

Sample	ROM, ZBOSS stack + App	ROM, MCUboot bootloader	ROM, ZBOSS non-volatile memory	ROM, ZBOSS product config	Total ROM	RAM, ZBOSS stack + App	Total RAM
Network coordinator	338	0	32	4	374	71	71
Light bulb	362	0	32	4	398	58	58
Light switch	283	0	32	4	319	52	52
Light switch with Zigbee FOTA	298	48	32	4	382	60	60
Light switch with Multiprotocol Bluetooth LE extension	390	0	32	4	426	70	70
Light switch with Multiprotocol Bluetooth LE extension and Zigbee FOTA	405	48	32	4	489	78	78
NCP	358	0	32	4	394	84	84
NCP with USB transport	377	64	32	4	477	93	93
Zigbee application template	337	0	32	4	373	66	66
Zigbee shell	425	0	32	4	461	88	88
Zigbee shell over USB	447	0	32	4	483	97	97

Stack memory requirements

The following table lists stack memory requirement values for main and zboss threads. These measurements were carried out with Thread analyzer, using the following Kconfig options for configuration:

• For the stack memory size of the main thread - CONFIG_MAIN_STACK_SIZE

• For the stack memory size of the zboss thread - CONFIG_ZBOSS_DEFAULT_THREAD_STACK_SIZE

Values are provided in bytes (B).

nRF52 SeriesnRF53 Series

The following table lists memory requirements for the nRF52 Series devices.

Sample	main thread stack usage	main thread stack size	zboss thread stack usage	zboss thread stack size
Network coordinator	624	2048	1080	1984
Light bulb	664	2048	1112	1984
Light switch	616	2048	1112	2048