Описание
The MKW2x is a low power, compact integrated device consisting of a high-performance 2.4 GHz IEEE 802.15.4 compliant radio transceiver and a powerful ARM Cortex-M4 MCU system with connectivity and precision mixed signal analog peripherals. Part of the large Kinetis MCU portfolio, the MKW2x family of devices are used to easily enable connectivity based on the ZigBee Pro network stack and application profiles for Smart Energy 1.x, Home Automation, Healthcare, and RF4CE, as well as the ZigBee IP network stack and the Smart Energy 2.0 application profile. Typical applications include Home Area Networks consisting of meters, gateways, in-home displays, and connected appliances, and also networked Building Control and Home Automation applications with lighting control, HVAC, and security. The MCU system of MKW2x includes a 50 MHz Cortex-M4 CPU with DSP capabilities, up to 512 KB of Flash memory, 64 KB of SRAM, and 64 KB of Flex Memory (available only on the MKW21D256V), plus a wide array of peripherals including USB, Cryptographic Acceleration, 16-bit ADC, and flexible timers. The radio transceiver of the MKW2x has excellent performance, with up to -102 dBm receiver sensitivity, +8 dBm maximum transmit output power, and up to 58 dBm channel rejection. Current consumption is minimized with peak transmit current of 17 mA at 0 dBm output power, and peak receive current of 15 mA in Low Power Preamble Search mode. The MKW2x is packaged in an 8 x 8 mm LGA with 63 total contacts, and operates between 1.8 V and 3.6 V in an ambient temperature range from -40°C to 105°C.
- Fully compliant 802.15.4 Standard transceiver supports 250 kbps data rate with OQPSK modulation in 5.0 MHz channels with direct sequence spread-spectrum (DSSS) encode and decode
- Operates on one of 16 selectable channels in the 2.4 GHz frequency ISM band
- Programmable output power
- Supports 2.36 to 2.4 GHz Medical Band (MBAN) frequencies with same modulation as IEEE 802.15.4
- Hardware acceleration for IEEE® 802.15.4 2006 packet processing
- Random number generator
- Support for dual PAN mode
- 32 MHz crystal reference oscillator with on board trim capability to supplement external load capacitors
- Programmable frequency clock output (CLK_OUT)
- Control port for Antenna Diversity mode
- Clocks
- 32 MHz crystal oscillator
- Internal 1 kHz low power oscillator
- DC to 32 MHz external square wave input clock
- Small RF footprint
- Differential input/output port used with external balun
- Integrated transmit/receive switch
- Supports single ended and diversity antenna options
- Low external component count
- Supports external PA and LNA
- Core:
- ARM Cortex-M4 Core at 50 MHz (1.25 MIPS/MHz
- Supports DSP instructions
- Nested vectored interrupt controller (NVIC)
- Asynchronous wake-up interrupt controller (AWIC)
- Debug and trace capability
- 2-pin serial wire debug (SWD)
- IEEE 1149.1 Joint Test Action Group (JTAG)
- IEEE 1149.7 compact JTAG (cJTAG)
- Trace port interface unit (TPIU)
- Flash patch and breakpoint (FPB)
- Data watchpoint and trace (DWT)
- Instrumentation trace macrocell (ITM)
- Enhanced trace macrocell (ETM)
