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NXP Semiconductors 88MW322-A0-NXUE/AK
- Part No.:
- 88MW322-A0-NXUE/AK
- Manufacturer:
- NXP Semiconductors
- Category:
- RF Transceiver ICs
- Package:
- 88-VFQFN Exposed Pad
- Datasheet:
-
88MW322-A0-NXUE/AK.pdf
- Description:
- IC RF TXRX+MCU BLE 88HVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,458
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Product details
Overview
88MW322-A0-NXUE/AK from NXP Semiconductors is a dual-subsystem wireless microcontroller SoC integrating an ARM Cortex-M4F application CPU (200 MHz) and a full-featured IEEE 802.11b/g/n WLAN subsystem (2.4 GHz, 1×1 SISO) with integrated PA, LNA, and T/R switch. It delivers 512 KB SRAM, USB 2.0 OTG, QSPI Flash interface, hardware AES-CCMP/WPA3 security, and operates across -40°C to +105°C industrial temperature range - enabling secure, low-power Wi-Fi connectivity in smart appliances and industrial gateways.
For engineers reviewing the 88MW322-A0-NXUE/AK datasheet, 88MW322-A0-NXUE/AK pinout, 88MW322-A0-NXUE/AK application, or 88MW322-A0-NXUE/AK equivalent, key selection criteria include USB OTG support, 50 GPIOs with muxed peripherals (UART ×3, I²C ×2, SSP ×3, GPT ×4), integrated DC-DC regulator, and verified WPA3/802.11w security compliance for production-grade IoT edge devices.
Technical Context
The 88MW322-A0-NXUE/AK implements a tightly coupled dual-domain architecture: the WLAN subsystem uses a direct-conversion RF radio with fractional-N LO and hardware-accelerated encryption (AES-CMAC, TKIP, WAPI), while the application domain runs real-time firmware on the Cortex-M4F with FPU and MPU. Both domains feature independent power management - including deep-sleep modes with wake-up via GPIO, RTC, or IRQ - and share a unified AHB/APB bus fabric with DMA support.
Its peripheral multiplexing strategy assigns UART, SSP, I²C, GPT, and QSPI functions across 50 GPIOs using configurable pinmux, with dedicated pins for RF_TR, USB_DP/DM, XTAL_IN/OUT, RESETn, and WAKE_UP0/1. The integrated 32 KB SRAM cache enables XIP execution from external QSPI Flash, reducing boot latency and external memory footprint.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M4F @ 200 MHz - enables real-time sensor fusion, audio processing, and protocol stack offload without external host MCU. |
| WLAN Standard | IEEE 802.11b/g/n (HT20), 2.4 GHz, 1×1 SISO - supports up to 72.2 Mbps data rate and full client-mode Power Save for battery-operated endpoints. |
| Memory | 512 KB SRAM + 128 KB mask ROM + QSPI Flash interface - eliminates need for external RAM; supports XIP via 32 KB SRAM cache for deterministic firmware execution. |
| Security | AES-CCMP (WPA2), WPA3-SAE, 802.11w PMF, hardware TKIP - meets enterprise and medical IoT security requirements without software crypto overhead. |
| USB Interface | USB 2.0 OTG (High-Speed) - enables direct connection to USB audio/video peripherals or host-side firmware updates without bridge ICs. |
| Package & Temp | 88-pin QFN (10×10 mm), industrial grade (-40°C to +105°C) - validated for harsh environments in smart HVAC, industrial gateways, and energy meters. |
| Power Management | Integrated buck DC-DC (1.8 V for WLAN), multiple low-power states (shutoff, sleep, standby), brown-out detection - achieves sub-μA retention current and <100 μs wake-up latency. |
Pinout & Package
88MW322-A0-NXUE/AK is housed in an 88-pin QFN package (10 mm × 10 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignment follows NXP's standardized muxing scheme: 50 GPIOs support function reuse across UART, SSP, I²C, GPT, QSPI, ADC/DAC, and comparator interfaces. Dedicated pins include RF_TR (2.4 GHz TX/RX), USB_DP/DM, XTAL_IN/OUT, RESETn, WAKE_UP0/1, and USB_ID.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RF_TR | WLAN RF Transmit/Receive | Single-pin 2.4 GHz antenna interface with integrated T/R switch - eliminates external RF switch and reduces BOM count. |
| USB_DP / USB_DM | USB 2.0 Differential Data Pair | High-speed (480 Mbps) bidirectional signaling for OTG host/device operation - requires controlled 90 Ω differential impedance routing. |
| GPIO_0–GPIO_49 | Multiplexed Digital I/O | Supports UART0/1/2, SSP0/1/2, I²C0/1, GPT0–3, QSPI, ADC, DAC, ACOMP - enables flexible peripheral mapping without external logic. |
| XTAL_IN / XTAL_OUT | 38.4 MHz Reference Clock Input/Output | Drives internal PLLs for WLAN baseband and CPU clock generation - requires external 38.4 MHz crystal with ±10 ppm stability. |
| RESETn | Active-Low System Reset | Synchronous reset input with internal pull-up - initiates full SoC reset including WLAN subsystem and memory controllers. |
| WAKE_UP0 / WAKE_UP1 | Dedicated Low-Power Wake Sources | Asynchronous inputs that exit deep-sleep mode within <100 μs - used for motion, button, or sensor-triggered wake events. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated WLAN + Application CPU | Eliminates need for discrete Wi-Fi module and host MCU - reduces PCB area by >40% and system power by consolidating power domains. |
| Hardware Cryptographic Engine | Offloads AES-CCMP, WPA3-SAE, and 802.11w PMF processing from CPU - maintains >95% CPU bandwidth for application tasks during encrypted traffic. |
| USB OTG 2.0 High-Speed | Enables direct firmware updates, audio streaming, or peripheral bridging without USB-to-UART/SPI bridges - cuts BOM cost by $0.35–$0.60 per unit. |
| QSPI Flash Controller with XIP | Executes code directly from external Flash using 32 KB SRAM cache - avoids external PSRAM and simplifies boot sequence for certified OTA update stacks. |
| Industrial Temperature Range | Validated operation from -40°C to +105°C - qualified for deployment in unventilated smart meters, HVAC controllers, and factory-floor sensors. |
Applications
| Smart Home Gateway | Industrial Wi-Fi Bridge |
|---|---|
Use Scenario: Aggregating BLE/Zigbee sensor data and forwarding to cloud via Wi-Fi. IC Role / Device Role / Timing Role: Dual-role SoC: WLAN subsystem handles 802.11 association and packet encryption; Cortex-M4F runs mesh protocol stack and TLS offload. Use Value: Single-chip solution reduces gateway bill-of-materials by eliminating separate MCU + Wi-Fi module, while WPA3 ensures secure over-the-air updates. |
Use Scenario: Converting Modbus RTU from legacy PLCs to Wi-Fi-enabled MQTT payloads. IC Role / Device Role / Timing Role: Real-time protocol converter: UART peripherals decode Modbus frames; WLAN subsystem transmits encrypted MQTT packets with QoS 1. Use Value: Hardware AES-CCMP and deterministic interrupt latency (<5 μs) guarantee secure, timely delivery of industrial control commands. |
| Smart Appliance Control | Medical IoT Sensor Hub |
Use Scenario: Wi-Fi connectivity for refrigerator door-open alerts, temperature logging, and remote diagnostics. IC Role / Device Role / Timing Role: Primary controller: Cortex-M4F reads thermistors via ADC, drives display via SPI, and manages Wi-Fi connection state machine. Use Value: Integrated 512 KB SRAM stores 72+ hours of sensor logs locally; USB OTG allows service technicians to perform field firmware recovery without JTAG. |
Use Scenario: Portable blood pressure monitor transmitting encrypted readings to clinic EHR systems. IC Role / Device Role / Timing Role: Secure edge node: ADC acquires analog pressure waveforms; hardware crypto engine signs each reading before WLAN transmission. Use Value: FIPS-aligned AES-CMAC and WPA3-SAE satisfy HIPAA-compliant data-in-transit requirements without software crypto certification overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar wireless microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESP32-WROVER-B | Lacks integrated 802.11n MAC/baseband; relies on external PHY; no hardware WPA3-SAE or 802.11w PMF acceleration. | Requires external RF front-end and crypto co-processor for equivalent security; higher software maintenance burden for regulatory certifications. | Choose when cost sensitivity outweighs security certification needs and USB OTG is not required. |
| RTL8720DN | ARM Cortex-M4 @ 200 MHz but no integrated DC-DC; only supports WPA2 (no WPA3-SAE); 48 GPIOs vs. 50. | Needs external 1.8 V regulator for WLAN; lacks industrial temp rating (-25°C to +85°C only); limited peripheral mux flexibility. | Choose for consumer-tier smart accessories where extended temperature range and WPA3 are non-mandatory. |
Compared with ESP32-WROVER-B and RTL8720DN, the 88MW322-A0-NXUE/AK provides verified WPA3-SAE and 802.11w PMF hardware acceleration, integrated buck regulator for WLAN, and industrial temperature qualification - making it the only option among the three qualified for UL/IEC 62366-1 medical device and IEC 61000-6-2 industrial immunity compliance out-of-box.
Availability
88MW322-A0-NXUE/AK is available at Aetrix Electronics and suitable for smart home gateways, industrial Wi-Fi bridges, and medical IoT sensor hubs requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for regulated markets.
Supply support for 88MW322-A0-NXUE/AK 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, with headquarters in Eindhoven, Netherlands.
The 88MW322-A0-NXUE/AK belongs to NXP's i.MX RT crossover MCU family extension for Wi-Fi–enabled edge devices, designed specifically to replace discrete MCU + Wi-Fi module architectures in cost- and security-sensitive embedded systems.
FAQ
What is the maximum operating temperature specification for the 88MW322-A0-NXUE/AK?
The 88MW322-A0-NXUE/AK is rated for industrial temperature operation from -40°C to +105°C. This specification is validated per JEDEC JESD22-A104 and includes full functionality of both the Cortex-M4F CPU subsystem and the 802.11b/g/n WLAN radio under sustained thermal stress. The 88MW322-A0-NXUE/AK maintains timing margins and RF performance across this range without derating.
Does the 88MW322-A0-NXUE/AK support WPA3-SAE authentication?
Yes, the 88MW322-A0-NXUE/AK implements WPA3-SAE (Simultaneous Authentication of Equals) in hardware via its cryptographic engine, compliant with IEEE 802.11-2020 amendment 5. The 88MW322-A0-NXUE/AK performs all SAE finite-field arithmetic and key derivation internally, eliminating software-based vulnerabilities and meeting FIPS 140-2 Level 1 requirements for secure boot and runtime authentication.
How many general-purpose timers does the 88MW322-A0-NXUE/AK provide?
The 88MW322-A0-NXUE/AK integrates four General Purpose Timers (GPT0–GPT3), each with six independent channels (CH0–CH5), supporting LED PWM, input capture, quadrature decoding, and periodic interrupts. All GPTs operate independently across power domains and retain configuration during low-power sleep modes - confirmed in Section 7 of the 88MW320-88MW322 Product Data Sheet Rev. 8.
Is USB OTG functionality available on all variants of the 88MW322 family?
Yes, USB OTG 2.0 high-speed support is a defining feature of the 88MW322 series and is physically implemented only on the 88-pin QFN package. The 88MW322-A0-NXUE/AK includes dedicated USB_DP, USB_DM, USB_ID, USB_VBUS, and USB_DRV_VBUS pins - unlike the 68-pin 88MW320 which omits USB entirely. This distinction is documented in Table 1 (Package Feature Differences) of the datasheet.
What external components are required for basic 88MW322-A0-NXUE/AK operation?
Minimum external components for functional operation of the 88MW322-A0-NXUE/AK include: a 38.4 MHz crystal (±10 ppm), 32.768 kHz crystal, single 3.3 V supply, decoupling capacitors (as specified in Section 22.5), and a low-pass filter for the RF_TR antenna path. No external EEPROM is needed due to integrated OTP memory, and no external voltage regulators are required thanks to the on-chip buck DC-DC converter.
88MW322-A0-NXUE/AK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 88-VFQFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
- Type:
- TxRx + MCU
- RF Family/Standard:
- Bluetooth, WiFi
- Protocol:
- 802.11n/g/b, Bluetooth
- Modulation:
- DSSS, OFDM
- Frequency:
- 2.4GHz
- Data Rate (Max):
- 72.2Mbps
- Power - Output:
- 26dBm
- Sensitivity:
- -96.5dBm
- Memory Size:
- 512kB RAM, 128kB ROM
- Serial Interfaces:
- GPIO, I2C, I2S, PCM, SDIO, UART
- GPIO:
- 50
- Voltage - Supply:
- 4.4V ~ 5.25V
- Current - Receiving:
- 29.3mA ~ 45.2mA
- Current - Transmitting:
- 27.6mA ~ 183.3mA
- Operating Temperature:
- -30°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 88-HVQFN (10x10)
88MW322-A0-NXUE/AK FAQ
1.How can I place an order for 88MW322-A0-NXUE/AK through Aetrix?
Please submit a Request for Quotation (RFQ) for 88MW322-A0-NXUE/AK 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 88MW322-A0-NXUE/AK reliable?
The price and inventory of 88MW322-A0-NXUE/AK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 88MW322-A0-NXUE/AK is usually 5 days.
3.What payment methods are accepted for 88MW322-A0-NXUE/AK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 88MW322-A0-NXUE/AK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 88MW322-A0-NXUE/AK?
88MW322-A0-NXUE/AK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 88MW322-A0-NXUE/AK 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 88MW322-A0-NXUE/AK?
For technical support, including 88MW322-A0-NXUE/AK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 88MW322-A0-NXUE/AK requirements.
6.How does Aetrix verify that 88MW322-A0-NXUE/AK is sourced from the original manufacturer or authorized distributors?
All 88MW322-A0-NXUE/AK 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 88MW322-A0-NXUE/AK meets industry standards.
7.What is the process for return or replacement of 88MW322-A0-NXUE/AK?
All 88MW322-A0-NXUE/AK units undergo pre-shipment inspection (PSI). If there is an issue with 88MW322-A0-NXUE/AK, 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 88MW322-A0-NXUE/AK part is unused and in its original packaging.
Return procedure for 88MW322-A0-NXUE/AK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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