Design with
multi-mode
(BLE/Generic-
FSK/802.15.4)
radio solutions
Kinetis
®
KW41Z/31Z/21Z
MCUs for Wireless Applications
The Kinetis KW41Z/31Z/21Z MCU family for wireless applications is the second
multi-mode family in the Kinetis W series portfolio. Primarily used for automation and
healthcare purposes, these MCUs enable low-energy and long-range connectivity.
TARGET APPLICATIONS
}
Home automation
– Access control
– Appliances
– Lighting control
– Smart thermostats
– Water heater control
– Curtain/window blind control
– Security systems
}
Building automation
– Building control and monitoring
– Building HVAC control
– Fire/security
– Retail pricing management
– Security and access control
– Usage data collection
}
Healthcare
– Fitness monitoring
– Home healthcare
– Institutional care
– Medication asset
– Patient monitoring
OVERVIEW
Integrating a Bluetooth
®
Low Energy (BLE) v4.2, Generic FSK
(at 250, 500 and 1000 kbit/s) and IEEE
®
802.15.4 compliant
modem, Kinetis KW41Z/31Z/21Z MCUs can support multiple
protocols running concurrently (time slice) in a single chip.
These MCUs also integrate a buck-boost DC-DC converter,
supporting a wide range of operating voltages from 0.9 V
to 4.2 V, significantly reducing the peak current in receive
and transmit modes. At the same time, this MCU family
delivers an excellent link budget that ensures the longest
range of communication and high immunity to interference.
KW41Z/31Z/21Z MCUs offer multi-
protocol support which allow the
system to concurrently operate in an
802.15.4 based network, like Thread,
and a BLE network, eliminating the need
for multiple radios, reducing system
complexity and cost. With up to 512 KB
of flash and up to 128 KB of SRAM on
chip, KW41Z/31Z/21Z MCUs provide
the ultimate option for running all your
connectivity needs in a single device.
Take advantage of the robust enablement
package that includes the BLE host stack,
generic FSK, Thread
®
stack, 802.15.4
MAC and Simple MAC (SMAC) software
protocol stacks, RTOS, development
tools and IDEs. These tools are designed
for use with Kinetis KW41Z/31Z/21Z
MCUs and are fully integrated in the
Kinetis software development kit (KSDK).
ENABLEMENT
}
Freedom development board
}
USB dongle for sniffer applications
or connection to PC
}
BLE v4.2 host
stack and application profiles
}
Generic FSK at 250, 500 and
1000 kbit/s
}
802.15.4 MAC/PHY support
}
Thread
®
network stack
}
Support for host MCU and MPU
(Linux
®
) processors
}
Support for IAR Embedded
Workbench
®
and Kinetis Design
Studio (KDS) IDEs
}
Full integration with Kinetis SDK
}
Multiple reference designs
}
Support for multiple RTOSes
including FreeRTOS™
KINETIS KW41Z/31Z/21Z WIRELESS MCU FAMILY BLOCK DIAGRAM
KINETIS KW41Z/31Z/21Z WIRELESS MCU FAMILY BLOCK DIAGRAM
Core
ARM
®
Cortex
®
-M0+
48 MHz
Interrupt
Controller
Debug
Interfaces
Communications
2 x I
2
C
2 x SPI
LPUART
TSI
CMT
GPIO w/ IRQ
Capabilities
16-bit ADC
12-bit DAC
6-bit ACMP
System
Internal and
External Watchdogs
DMA
Low-Leakage
Wake-Up Unit
DC-DC Converter
Timers
FlexTimers
Analog
Programmable
Delay Block
Periodic Interrupt
Timers
Low-Power Timer
Independent Real-
Time Clock
Memories
Up to 512 KB
Flash
Up to 128 KB
SRAM
Transceiver
BLE 4.2 and
802.15.4 radio
Balun
Security
AES-128
True Random
Number Generator
Clocks
Frequency-Locked
Loop
Low-/High-
Frequency Osc.
Internal Reference
Clocks
KINETIS KW41Z/31Z/21Z FAMILY
Features
Dual-mode concurrent BLE and 802.15.4 radio
capability with Kinetis
®
KW41Z MCUs
Benefits
Supports concurrent operations in a single chip
between an 802.15.4 and BLE network lowering
system cost and complexity
Significantly reduces power consumption and
extends battery life
High link budget improves range and lowers cost
by reducing the need for external power amplifiers
Integrated balun enables smaller design and
reduces system costs
Significantly improves operation in harsh
2.4 GHz environments such as condominiums and
apartments
High-performance, low-power core with adequate
memory to run BLE, generic FSK and Thread
®
protocol stacks and application
Fast encryption/decryption utilizing hardware
security algorithms for network commissioning and
transmissions of supported protocols
Supports a wide range of batteries from single
alkaline or coin-cell to Lithium-ion
Supports high-performance on-chip analog at
the MCU level for sensor aggregation and other
sophisticated applications
6.8 mA typical Rx and 6.1 mA Tx current with DC-DC
activated
-95 dBm typical BLE sensitivity
-100 dBm typical generic FSK (at 250 kbit/s) sensitivity
-100 dBm typical 802.15.4 sensitivity
+3.5 dBm maximum output power
Excellent selectivity and blocking
48 MHz ARM
®
Cortex
®
-M0+ core
Up to 512 KB flash memory
Up to 128 KB SRAM
AES-128 accelerator
True random number generator
Buck-boost DC-DC converter working from 0.9 V to
4.2 V
16-bit analog-to-digital converter (ADC)
12-bit digital-to-analog converter (DAC)
6-bit high-speed analog comparator (CMP)
Small 7 x 7 laminate QFN
Smaller size and low component count reduces cost
Fast antenna diversity for 802.15.4
Allows the hardware to automatically select
between two antennas, improving reliability in
high-interference environments
Software protocol stacks, tools and IDE are
compatible with Kinetis MCUs, and integrated
in the Kinetis software development kit (KSDK)
Compatible with NXP MCU family
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
