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 development and production 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 (in KB) for Zigbee samples.

n/a indicates that the sample with the given variant is not supported on the DK.

nRF52840nRF52833nRF5340

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	305	0	32	4	341	63	63
Light bulb	330	0	32	4	366	50	50
Light switch	255	0	32	4	291	44	44
Light switch with Zigbee FOTA	266	48	32	4	350	48	48
Light switch with Multiprotocol Bluetooth LE extension	353	0	32	4	389	59	59
Light switch with Multiprotocol Bluetooth LE extension and Zigbee FOTA	365	48	32	4	449	63	63
NCP	324	0	32	4	360	74	74
NCP with USB transport	343	64	32	4	443	83	83

Stack memory requirements

The following table lists stack memory requirement values (in KB) 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

Sample	main thread stack usage	main thread stack size	zboss thread stack usage	zboss thread stack size
Network coordinator	440	1024	1168	1952
Light bulb	496	1024	1232	1952
Light switch	432	1024	1272	1952