KW21Z: Kinetis KW21Z-2.4 GHz 802.15.4 Wireless Radio Microcontroller based on ARM® Cortex®-M0+

The KW21Z is an ultra low-power, highly-integrated single-chip device that enables IEEE® 802.15.4 RF connectivity for portable, extremely low-power embedded systems. Applications include portable health care devices, access control, security systems, smart energy and home area networks.

The KW21Z Wireless MCU integrates a 2.4 GHz transceiver supporting O-QPSK modulations, an ARM® Cortex®-M0+ CPU, up to 512 KB Flash and up to 128 KB SRAM, 802.15.4 packet processor, hardware security and peripherals optimized to meet the requirements of the target applications. The KW21Z is an ideal solution for single chip Thread devices including routers and end devices as well as border routers when adding connectivity for communicating with the cloud.

Kinetis® W Series KW21Z MCUs Block Diagram
Kinetis W Series MCUs: Expanding the Possibilities of the IoT
特性
  • 802.15.4 Radio Features
    • IEEE Std. 802.15.4 Standard Compliant
    • Typical Receiver Sensitivity (802.15.4) = -100 dBm
    • Programmable Transmitter Output Power up to +3.5 dBm
  • IEEE Std. 802.15.4 Standard Compliant
  • Typical Receiver Sensitivity (802.15.4) = -100 dBm
  • Programmable Transmitter Output Power up to +3.5 dBm
  • Core and Memories
    • Up to 48 MHz ARM® Cortex-M0+ core
    • Up to 512 KB Flash memory
    • Up to 128 KB SRAM
    • Excellent coexistence performance
    • Integrated balun to reduce system cost and PCB board area
  • Up to 48 MHz ARM® Cortex-M0+ core
  • Up to 512 KB Flash memory
  • Up to 128 KB SRAM
  • Excellent coexistence performance
  • Integrated balun to reduce system cost and PCB board area
  • Low Power Consumption and Operating Voltage Ranges
    • Nine low-power modes to provide power optimization based on application requirements
    • Typical Rx/Tx Current (DC/DC Enabled): 6.8/6.1 mA
    • Bypass Voltage: 1.71V to 3.6V
    • DCDC Converter Buck Configuration: 2.1V to 4.2V
    • DCDC Converter Boost Configuration: 0.9V to 1.795V
  • Nine low-power modes to provide power optimization based on application requirements
  • Typical Rx/Tx Current (DC/DC Enabled): 6.8/6.1 mA
  • Bypass Voltage: 1.71V to 3.6V
  • DCDC Converter Buck Configuration: 2.1V to 4.2V
  • DCDC Converter Boost Configuration: 0.9V to 1.795V
  • Analog modules
    • 16-bit Analog-to-Digital Converter (ADC)
    • 12-bit Digital-to-Analog Converter (DAC)
    • 6-bit High Speed Analog Comparator (CMP)
  • 16-bit Analog-to-Digital Converter (ADC)
  • 12-bit Digital-to-Analog Converter (DAC)
  • 6-bit High Speed Analog Comparator (CMP)
  • Security
    • AES-128 Accelerator (AESA), True Random Number Generator (TRNG)
  • AES-128 Accelerator (AESA), True Random Number Generator (TRNG)
  • Supported Software
    • Thread, 802.15.4 MAC and SMAC
    • Kinetis® Software Development Kit (SDK)
    • FreeRTOS kernel and a bare-metal non-preemptive task scheduler
    • Support for Kinetis Design Studio (KDS) and IAR
  • Thread, 802.15.4 MAC and SMAC
  • Kinetis® Software Development Kit (SDK)
  • FreeRTOS kernel and a bare-metal non-preemptive task scheduler
  • Support for Kinetis Design Studio (KDS) and IAR
Data Sheets (1)
Name/DescriptionModified Date
MKW41Z/31Z/21Z Data Sheet (REV 1) PDF (1.3 MB) MKW41Z51217 Oct 2016
Errata (1)
Name/DescriptionModified Date
Mask Set Errata for Mask 1N16S (REV 28SEP2016) PDF (88.0 kB) KINETIS_W_1N16S04 Oct 2016
Reference Manuals (1)
Name/DescriptionModified Date
MKW41Z/31Z/21Z Reference Manual (REV 1) PDF (21.0 MB) MKW41Z512RM17 Oct 2016
Users Guides (3)
Name/DescriptionModified Date
FRDM-KW41Z Quick Start Guide (REV 0) PDF (587.3 kB) FRDMKW41ZQRG11 Oct 2016
FRDM-KW41Z Freedom Development Board User's Guide (REV 0) PDF (1.3 MB) FRDMKW41ZUG11 Aug 2016
USB-KW41Z Sniffer/Development Board User's Guide (REV 0) PDF (870.0 kB) USBKW41ZUG11 Aug 2016
Fact Sheets (1)
Name/DescriptionModified Date
Kinetis® KW41Z/31Z/21Z Wireless MCUs - Fact Sheet (REV 3) PDF (3.4 MB) KNTSKW41Z31Z21ZFS28 Sep 2016
Ordering Information
ProductStatusStatusBudgetary Price excluding tax(US$)Core TypeOperating Frequency (Max) (MHz)On-chip SRAM (KB)Total Flash (KByte)USBIntegrated wireless radioPackage typeAmbient Operating Temperature (Min-Max) (°C)Transmit Current (mA)Receive Current (mA)RX SensitivityRadio Protocol Supported
MKW21Z256VHT4Active10K @ US$2.32ARM Cortex-M0+4864256-40 to 105
MKW21Z512VHT4Active10K @ US$3.21ARM Cortex-M0+48128512-40 to 105
Package Information
Package DescriptionOutline VersionPackingProduct StatusPart NumberChemical ContentRoHS / Pb FreeChina RoHS LookupMSLPPT (°C)
LamQFN 48 7*7*0.98 P0.598ASA00694DMPQ - 260 TRAYPOQ - 1300 BRICKActiveMKW21Z256VHT4MKW21Z256VHT4.pdf3260
MPQ - 260 TRAYPOQ - 1300 BRICKActiveMKW21Z512VHT4MKW21Z512VHT4.pdf3260
MKW41Z/31Z/21Z Data Sheet kw21z
Mask Set Errata for Mask 1N16S kw21z
MKW41Z/31Z/21Z Reference Manual kw21z
FRDM-KW41Z Quick Start Guide kw21z
FRDM-KW41Z Freedom Development Board User's Guide kw21z
USB-KW41Z Sniffer/Development Board User's Guide kw21z
Kinetis® KW41Z/31Z/21Z Wireless MCUs - Fact Sheet kw21z
98ASA00694D kw41z
MKW21Z256VHT4.pdf kw21z
MKW21Z512VHT4.pdf kw21z