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NXP Semiconductors MKW21D512VHA5R
- Part No.:
- MKW21D512VHA5R
- Manufacturer:
- NXP Semiconductors
- Category:
- RF Transceiver ICs
- Package:
- 63-VFLGA
- Datasheet:
-
MKW21D512VHA5R.pdf
- Description:
- IC RF TXRX+MCU 802.15.4 63MAPLGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,306
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Product details
Overview
MKW21D512VHA5R from NXP Semiconductors is a 50 MHz ARM Cortex-M4 MCU integrated with an IEEE 802.15.4-compliant 2.4 GHz radio transceiver, 512 KB flash, 64 KB SRAM, and -102 dBm receiver sensitivity. It operates from 1.8–3.6 V across -40°C to 105°C and targets ZigBee Home Automation and Thread-based smart energy gateways.
For engineers reviewing the MKW21D512VHA5R datasheet, MKW21D512VHA5R pinout, MKW21D512VHA5R application, or MKW21D512VHA5R equivalent, key selection criteria include IEEE 802.15.4 packet processing acceleration, dual PAN ID support, LPPS low-power receive mode, and absence of USB or FlexMemory-distinguishing it from MKW22D/MKW24D variants.
Technical Context
The MKW21D512VHA5R implements a near-zero-IF (NZIF) radio architecture with hardware-accelerated 802.15.4 packet filtering, supporting OQPSK modulation at 250 kbps across 16 ISM channels (2405–2480 MHz) and MBAN bands (2360–2400 MHz). Its transceiver includes programmable output power (-35 to +8 dBm), integrated T/R switch, and differential RF I/O ports.
System-level operation leverages a 50 MHz Cortex-M4 core with DSP extensions, 128-byte hardware packet buffer, dedicated LQI/ED/CCA logic, and 10 power modes-including Low Power Preamble Search (LPPS) with 15 mA peak current. It lacks USB and FlexMemory, distinguishing its memory/peripheral configuration from MKW22D/MKW24D siblings.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M4 @ 50 MHz with DSP instructions - enables real-time MAC-layer processing and sensor fusion in battery-powered nodes. |
| Flash / SRAM | 512 KB flash / 64 KB SRAM - supports full ZigBee PRO or Thread stack plus application code without external memory. |
| RX Sensitivity | -102 dBm @ 1% PER - ensures robust link budget for mesh network edge devices in noisy residential environments. |
| TX Output Power | +8 dBm max - provides sufficient range for in-home coverage without external PA in most smart energy deployments. |
| Operating Voltage | 1.8–3.6 V - compatible with single-cell Li-ion, 2xAA, or regulated 3.3 V supplies in compact end-node designs. |
| Temp Range | -40°C to +105°C - qualified for metering, HVAC control, and gateway applications in uncontrolled enclosures. |
| Package | 8 × 8 mm LGA-56 - surface-mount footprint with thermal pad for conduction cooling in dense PCB layouts. |
Pinout & Package
Packaged in an 8 × 8 mm LGA with 56 contacts, including exposed thermal pad (pin 56), 32 MHz crystal connections (XTAL1/XTAL2), differential RF I/O (RFOUTP/RFOUTN), SPI interface (R_SSEL_B, R_SCLK, R_MOSI, R_MISO), CLK_OUT (pin 39), and dual antenna control signals (ANT_A, ANT_B).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RFOUTP / RFOUTN | Differential RF transmit/receive port | Connects directly to balun for single-ended antenna interface; shared path requires external T/R switch or diversity module. |
| ANT_A / ANT_B | Antenna diversity control outputs | Hardware-state-machine-driven signals enabling automatic switching between two antennas during LPPS or packet reception. |
| R_SSEL_B / R_SCLK / R_MOSI / R_MISO | Slave SPI interface | MCU-controlled register and 128-byte packet buffer access; supports burst reads/writes for low-latency frame handling. |
| CLK_OUT (Pin 39) | Programmable clock output | Provides MCU clock derived from 32 MHz radio oscillator (4–32 MHz selectable); eliminates need for separate crystal on host side. |
| XTAL1 / XTAL2 | 32 MHz crystal oscillator inputs | Drives radio PHY; internal trim capability reduces external load capacitor count and improves frequency stability over temperature. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware 802.15.4 Packet Processor | Offloads MAC-layer filtering (address match, frame type, PAN ID, pending bit) - reduces CPU wake-ups and extends sleep duration in battery nodes. |
| Dual PAN ID Support | Simultaneous operation on two independent networks using separate channels, PAN IDs, and IEEE addresses - enables gateway bridging between HAN and WAN without software arbitration. |
| Low Power Preamble Search (LPPS) | 15 mA peak receive current with duty-cycled frontend - achieves >1 year battery life in periodic polling applications like smart thermostats. |
| Integrated Transmit/Receive Switch | On-die T/R switch eliminates discrete RF switch - reduces BOM count, layout area, and insertion loss in compact modules. |
| Cryptographic Acceleration | Hardware AES-128/256, SHA-1/256, and RNG - accelerates secure boot, frame encryption, and key derivation without CPU overhead. |
Applications
| ZigBee Home Automation Gateway | Thread Border Router |
|---|---|
Use Scenario: Central hub aggregating lighting, HVAC, and security sensors in residential smart home systems. IC Role / Device Role / Timing Role: Dual-PAN coordinator bridging ZigBee HA network (PAN0) and Thread network (PAN1) with synchronized timekeeping via 32 MHz crystal. Use Value: Eliminates need for two separate radios; hardware-accelerated packet forwarding reduces latency and MCU resource contention. | Use Scenario: IP-capable edge router connecting Thread end devices to IPv6 backbone via Ethernet/Wi-Fi. IC Role / Device Role / Timing Role: Full-stack Thread 1.1.1 node with hardware timestamping for CSL (Channel Scheduling Logic) and MAC-layer security. Use Value: 512 KB flash stores complete OpenThread stack + TLS; -102 dBm sensitivity maintains reliable mesh links in multi-floor buildings. |
| Smart Energy Meter Communication Module | Wireless HVAC Controller Node |
Use Scenario: Two-way communication module in ANSI C12.19/C12.22-compliant electricity meters for AMI backhaul. IC Role / Device Role / Timing Role: IEEE 802.15.4g Smart Energy 1.x PHY/MAC endpoint with precise 32 kHz RTC for time-synchronized billing data uploads. Use Value: 105°C rating ensures reliability inside meter enclosures; hardware CRC and AES prevent firmware tampering during OTA updates. | Use Scenario: Battery-powered thermostat or zone controller communicating with HVAC main unit via ZigBee Light Link or RF4CE. IC Role / Device Role / Timing Role: Low-power sensor node performing temperature/humidity sensing, local PID control, and encrypted frame transmission. Use Value: LPPS mode draws only 15 mA during listen intervals; 16-bit ADC interfaces directly to analog sensor outputs without external signal conditioning. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar IEEE 802.15.4 wireless MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MKW22D512VHA5R | Includes full-speed USB 2.0 interface; same flash/SRAM, no FlexMemory. | Required where host-side firmware updates or debug trace via USB are needed; not suitable if USB adds cost/complexity. | Select MKW22D512VHA5R when USB connectivity is mandatory for field programming or diagnostics. |
| MKW24D512VHA5R | Supports Smart Energy 2.0 PHY and full-speed USB 2.0; same memory config. | Targeted at next-gen utility-grade meters requiring SE 2.0 compliance and USB-based certification testing. | Choose MKW24D512VHA5R only when Smart Energy 2.0 certification or USB-hosted test infrastructure is required. |
Compared with MKW21D512VHA5R, MKW22D512VHA5R adds USB but removes no functionality, while MKW24D512VHA5R further extends compliance to Smart Energy 2.0 - both retain identical RF performance and dual PAN capability, making them drop-in alternatives only when their added interfaces are utilized.
Availability
MKW21D512VHA5R is available at Aetrix Electronics and suitable for smart energy gateways, Thread border routers, and ZigBee HVAC controllers requiring stable component supply, long-term lifecycle assurance, and industrial temperature qualification.
Supply support for MKW21D512VHA5R includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
NXP Semiconductors is a global semiconductor leader specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
The MKW2xD family was designed specifically for standards-based sub-GHz and 2.4 GHz wireless mesh networking in resource-constrained, battery-operated endpoints and gateways - emphasizing low-power radio integration, hardware-accelerated protocol offload, and industrial-grade reliability.
FAQ
Does MKW21D512VHA5R support USB connectivity?
No, MKW21D512VHA5R does not include a USB interface. Unlike MKW22D512VHA5R and MKW24D512VHA5R variants, this part omits USB to reduce cost and silicon area - making it ideal for applications where firmware updates occur via SPI or UART instead of USB. MKW21D512VHA5R retains full radio and MCU functionality otherwise.
What memory configuration does MKW21D512VHA5R provide?
MKW21D512VHA5R integrates 512 KB of on-chip flash memory and 64 KB of SRAM. It does not include FlexNVM or FlexRAM - unlike MKW21D256VHA5R, which offers up to 64 KB FlexNVM. This fixed high-memory configuration supports full ZigBee PRO or Thread protocol stacks without external memory expansion.
Is MKW21D512VHA5R qualified for industrial temperature operation?
Yes, MKW21D512VHA5R is rated for ambient operating temperatures from -40°C to +105°C. This extended range is validated per NXP's industrial qualification standards and enables deployment in demanding environments such as electricity meter enclosures, HVAC control panels, and outdoor gateways without derating or thermal management overhead.
How does MKW21D512VHA5R implement dual PAN functionality?
MKW21D512VHA5R implements dual PAN via dedicated hardware registers for two independent PAN configurations - including separate 16-bit PAN IDs, channel settings, short/long IEEE addresses, and coordinator flags. The hardware automatically switches between PAN0 and PAN1 using a programmable timer, enabling seamless bridging without CPU intervention or stack-layer arbitration.
What radio features distinguish MKW21D512VHA5R from generic 802.15.4 transceivers?
MKW21D512VHA5R integrates a near-zero-IF radio with hardware-accelerated packet processing, -102 dBm sensitivity, +8 dBm TX power, and Low Power Preamble Search mode drawing only 15 mA. Its differential RF I/O, integrated T/R switch, and antenna diversity control (ANT_A/ANT_B) eliminate external RF components - reducing bill-of-materials and improving RF consistency versus discrete transceiver + MCU solutions.
MKW21D512VHA5R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 63-VFLGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- TxRx + MCU
- RF Family/Standard:
- 802.15.4
- Protocol:
- Zigbee®
- Modulation:
- DSSS, O-QPSK
- Frequency:
- 2.4GHz
- Data Rate (Max):
- 250kbps
- Power - Output:
- 8dBm
- Sensitivity:
- -102dBm
- Memory Size:
- 512kB Flash, 64kB SRAM
- Serial Interfaces:
- I2C, JTAG, SPI, UART
- GPIO:
- 2
- Voltage - Supply:
- 1.8V ~ 3.6V
- Current - Receiving:
- 15mA
- Current - Transmitting:
- 19mA
- Operating Temperature:
- -40°C ~ 105°C
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 63-MAPLGA (8x8)
MKW21D512VHA5R FAQ
1.How can I place an order for MKW21D512VHA5R through Aetrix?
Please submit a Request for Quotation (RFQ) for MKW21D512VHA5R on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MKW21D512VHA5R reliable?
The price and inventory of MKW21D512VHA5R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MKW21D512VHA5R is usually 5 days.
3.What payment methods are accepted for MKW21D512VHA5R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MKW21D512VHA5R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MKW21D512VHA5R?
MKW21D512VHA5R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MKW21D512VHA5R order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MKW21D512VHA5R?
For technical support, including MKW21D512VHA5R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MKW21D512VHA5R requirements.
6.How does Aetrix verify that MKW21D512VHA5R is sourced from the original manufacturer or authorized distributors?
All MKW21D512VHA5R products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MKW21D512VHA5R meets industry standards.
7.What is the process for return or replacement of MKW21D512VHA5R?
All MKW21D512VHA5R units undergo pre-shipment inspection (PSI). If there is an issue with MKW21D512VHA5R, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MKW21D512VHA5R part is unused and in its original packaging.
Return procedure for MKW21D512VHA5R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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