MKW21Z512VHT4

RF Transceiver ICS Overview

The MKW21Z512VHT4 is an RF System on a Chip (SoC) from NXP Semiconductors, integrating an ARM Cortex-M0+ core with a 2.4 GHz transceiver. It supports IEEE 802.15.4 and Zigbee protocols. The device features 512 kB of Flash memory and 128 kB of SRAM. Operating voltage ranges from 1.71 V to 3.6 V. It offers a maximum data rate of 1 Mbps, output power of 5 dBm, and sensitivity of -95 dBm. Current consumption is 6.3 mA during reception and 5.7 mA during transmission. The unit operates between -40°C and +105°C in a 48-pin LQFN package.

RF Transceiver ICS Feature Summary

• Integrates an ARM Cortex-M0+ processor with a 2.4 GHz radio for combined processing and wireless communication capabilities.
• Supports IEEE 802.15.4 and Zigbee standards for low-rate wireless personal area network applications.
• Includes substantial onboard memory with 512 kB Flash and 128 kB SRAM for code storage and data handling.

RF Transceiver ICS Applications

• Smart home automation devices
• Industrial sensor networks
• Building control systems

RF Transceiver ICS Procurement Notes

Verify the specific suffix 'HT4' against the manufacturer's official datasheet to confirm tape and reel packaging specifications and moisture sensitivity level requirements. Ensure the ordering part number matches the exact pinout and thermal pad configuration documented in the MKW21Z family documentation. Cross-reference the voltage range and interface options with system design constraints before finalizing procurement.

RF Transceiver ICS Selection Notes

Select this component when both Zigbee/802.15.4 connectivity and a microcontroller are required in a single package. The 48 MHz clock speed and 512 kB memory suit complex protocol stacks. Consider the 48-pin LQFN footprint for space-constrained designs. Evaluate the 1.71 V minimum supply voltage against battery management strategies for portable applications.

RF Transceiver ICS Part Context

This part belongs to the Kinetis W series, designed for wireless IoT applications. It complements other variants like the MKW41Z which may support Bluetooth Low Energy alongside similar memory architectures. The MKW21Z specifically targets Zigbee and Thread ecosystems, providing a cost-effective solution for mesh networking nodes compared to separate MCU and transceiver combinations.

RF Transceiver ICS Replacement Considerations

Public confirmed substitute part numbers include MKW21Z256VHT4, which shares the same package and core but offers reduced Flash memory capacity. Designers should verify software compatibility and memory allocation when switching between these variants within the MKW21Z family.