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.

nRF52840nRF52833nRF5340nRF21540

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	327	0	32	4	363	67	67
Light bulb	350	0	32	4	386	53	53
Light switch	270	0	32	4	306	48	48
Light switch with Zigbee FOTA	282	48	32	4	366	53	53
Light switch with Multiprotocol Bluetooth LE extension	373	0	32	4	409	64	64
Light switch with Multiprotocol Bluetooth LE extension and Zigbee FOTA	385	48	32	4	469	69	69
NCP	350	0	32	4	386	79	79
NCP with USB transport	370	64	32	4	470	88	88
Zigbee application template	326	0	32	4	362	62	62
Zigbee shell	409	0	32	4	445	91	91

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	464	1024	1120	1952
Light bulb	688	1024	1288	1952
Light switch	464	1024	1224	1952