Arm® Cortex®-M0+|Kinetis® KW31Z Bluetooth Low Energy 32-bit MCUs | NXP Semiconductors

Kinetis® KW31Z-2.4 GHz Bluetooth Low Energy Wireless Radio Microcontroller (MCU) based on Arm® Cortex®-M0+ Core

Kinetis W Series MCUs: Expanding the Possibilities

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Block Diagram

Kinetis® W Series KW31Z MCUs Block Diagram

Kinetis<sup>&#174;</sup> W Series KW31Z MCUs Block Diagram

Features

Bluetooth Low Energy Radio Features

  • 2.4 GHz Bluetooth Low Energy version 4.2 Compliant
  • Typical Receiver Sensitivity (Bluetooth Low Energy) = -95 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

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): 6.5 mA / 8.4 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)

Security

  • AES-128 Accelerator (AESA), True Random Number Generator (TRNG)

Supported Software

  • Bluetooth Low Energy Host Stack and Profiles
  • Generic FSK Link Layer Software
  • Kinetis® Software Development Kit (SDK)
  • FreeRTOS kernel and a bare-metal non-preemptive task scheduler
  • Support for MCUXpresso and IAR

More

Comparison Table

Kinetis KW41Z Family Solutions

Part Number Wireless Connectivity Protocol Memory Package Size Hardware Development Tool
MKW41Z512VHT4 Bluetooth Low Energy and IEEE 802.15.4 512 KB Flash,
128 KB RAM
7 mm x 7 mm x 1 mm
48-pin Laminate QFN
FRDM-KW41Z
USB-KW41Z
MKW41Z256VHT4 256 KB Flash,
64 KB SRAM
MKW41Z512CAT4R 512 KB Flash,
128 KB RAM
3.9 mm x 3.8 mm
75-pin WLCSP
MKW31Z512VHT4 Bluetooth Low Energy 512 KB Flash,
128 KB RAM
7 mm x 7 mm x 1 mm
48-pin Laminate QFN
MKW31Z256VHT4 256 KB Flash,
64 KB SRAM
MKW31Z512CAT4R 512 KB Flash,
128 KB RAM
3.9 mm x 3.8 mm
75-pin WLCSP
MKW21Z512VHT4 IEEE 802.15.4 512 KB Flash,
128 KB RAM
7 mm x 7 mm x 1 mm
48-pin Laminate QFN
MKW21Z256VHT4 256 KB Flash,
64 KB SRAM

Buy/Parametrics

3 results

Include 0 NRND

Order

CAD Model

Status

Budgetary Price excluding tax

Core Type

Operating Frequency [Max] (MHz)

SRAM (kB)

Flash (kB)

Security

SPI

I2C

ADC [Number, bits]

Supply Voltage [Min to Max] (V)

Active

10K @ US$2.97

1 x Arm Cortex-M0+

48

64

256

CRC

2

2

1 x 16

0.9 to 4.2

Active

10K @ US$3.41

1 x Arm Cortex-M0+

128

Active

10K @ US$3.26

1 x Arm Cortex-M0+

48

128

512

CRC

2

2

1 x 16

0.9 to 4.2

Documentation

Quick reference to our documentation types.

1-10 of 12 documents

Compact List

Application Note (3)
Data Sheet (1)
Errata (1)
Fact Sheet (1)
Reference Manual (1)
User Guide (5)
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Design Files

Quick reference to our design files types.

1 design file

Hardware

Quick reference to our board types.

1-5 of 8 hardware offerings

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Software

Quick reference to our software types.

1-5 of 11 software files

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Note: For better experience, software downloads are recommended on desktop.

Engineering Services

1-5 of 6 engineering services

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