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NXP Semiconductors 88MW322-A0-NXUE/AZ
- Part No.:
- 88MW322-A0-NXUE/AZ
- Manufacturer:
- NXP Semiconductors
- Category:
- RF Transceiver ICs
- Package:
- 88-VFQFN Exposed Pad
- Datasheet:
-
88MW322-A0-NXUE/AZ.pdf
- Description:
- IC RF TXRX+MCU BLE 88HVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,407
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Product details
Overview
88MW322-A0-NXUE/AZ from NXP Semiconductors is a dual-subsystem wireless microcontroller SoC integrating an ARM Cortex-M4F CPU (200 MHz) and a full-featured IEEE 802.11b/g/n WLAN subsystem (2.4 GHz, 1×1 SISO, up to 72.2 Mbps) with integrated PA, LNA, and T/R switch. It includes 512 KB SRAM, 128 KB mask ROM, QSPI Flash interface with 32 KB SRAM cache for XIP, USB 2.0 OTG, and hardware cryptographic acceleration. It targets Wi-Fi-connected smart home appliances requiring low-power operation and secure over-the-air firmware updates.
For engineers reviewing the 88MW322-A0-NXUE/AZ datasheet, 88MW322-A0-NXUE/AZ pinout, 88MW322-A0-NXUE/AZ application, or 88MW322-A0-NXUE/AZ equivalent, this page delivers verified technical context on its dual-CPU/WLAN architecture, USB OTG integration, 88-pin QFN package, low-power state management, and secure boot implementation - all critical for embedded Wi-Fi system design and BOM optimization.
Technical Context
The 88MW322-A0-NXUE/AZ implements a tightly coupled dual-domain architecture: the Cortex-M4F application CPU handles real-time application logic and peripheral control, while a dedicated Feroceon-based WLAN subsystem executes MAC/baseband/RF protocol stack independently. The WLAN subsystem uses direct-conversion RF with integrated PA (10 dB low-power mode), LNA, and T/R switch, eliminating external SAW filters.
Power management includes independent domain control (WLAN vs. MCU), six power modes (active/idle/standby/sleep/shutoff/power-down), integrated buck DC-DC converter (1.8 V for WLAN), and wake-up via GPIO/IRQ/RTC. Security is enforced through Secure Boot, AES-CCMP (WPA2), AES-CMAC (802.11w), WAPI, and WPA3-SAE support.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M4F, 200 MHz main bus clock - enables real-time sensor fusion and local decision-making without host processor dependency |
| WLAN Standard | IEEE 802.11b/g/n, 2.4 GHz, HT20, 1×1 SISO - supports legacy and modern Wi-Fi infrastructure with up to 72.2 Mbps PHY rate |
| Memory | 512 KB SRAM + 128 KB mask ROM + QSPI Flash interface with 32 KB SRAM cache - enables XIP execution and eliminates need for external RAM in many applications |
| USB Interface | USB 2.0 OTG, high-speed - allows direct connection to PC/host for firmware updates, audio streaming, or device enumeration as peripheral or host |
| Package | 88-pin QFN, 10×10 mm, 0.5 mm pitch - provides 50 GPIOs, 4 GPTs, and dedicated USB/RF pins; larger than 68-pin 88MW320 to accommodate OTG routing |
| Security Engine | Hardware AES-CCMP, AES-CMAC, TKIP, WAPI, WPA3-SAE - offloads encryption/decryption from CPU and ensures compliance with enterprise-grade Wi-Fi security protocols |
| Low-Power Capability | Deep sleep mode with RTC wake-up, independent WLAN/MCU power domains, and integrated buck regulator - achieves sub-mA active current and <10 µA deep-sleep current |
Pinout & Package
88MW322-A0-NXUE/AZ is housed in an 88-pin QFN package (10×10 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are highly muxed across GPIOs, supporting flexible I/O allocation while reserving dedicated pins for RF_TR, USB_DP/DM/ID/VBUS, XTAL_IN/OUT, and RESETn.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RF_TR | WLAN RF Transmit/Receive | Dedicated 2.4 GHz antenna interface with integrated T/R switch - requires external low-pass filter only, no SAW needed |
| USB_DP / USB_DM | USB 2.0 Differential Data Pair | High-speed (480 Mbps) bidirectional signaling for OTG host/peripheral operation - routed on dedicated pins, not muxed |
| USB_ID | OTG Role Detection | Identifies host vs. device mode at boot; pulled internally to determine default USB configuration |
| GPIO_0–GPIO_49 | Configurable Digital I/O | 50 pins supporting UART, SSP/SPI/I2S, I2C, GPT, QSPI, ADC/DAC, comparator, and wake-up functions - all software-muxable per Table 11 |
| XTAL_IN / XTAL_OUT | 38.4 MHz Reference Clock Input | Drives internal PLLs for WLAN and MCU clocks - requires external 38.4 MHz crystal; 32.768 kHz crystal optional for RTC |
Key Features
| Feature | Design Value |
|---|---|
| Integrated WLAN Subsystem | Full MAC/baseband/RF chain with PA/LNA/T-R switch - reduces BOM count by eliminating discrete RF front-end components |
| USB 2.0 OTG Support | Enables direct firmware update, audio/video streaming, or peripheral emulation without external USB controller |
| Secure Boot + Cryptographic Engine | Ensures authenticated firmware execution and hardware-accelerated WPA2/WPA3 encryption - meets IoT security certification requirements |
| XIP Flash Controller | 32 KB SRAM cache enables execute-in-place from QSPI Flash - eliminates need for external PSRAM and simplifies memory layout |
| Multi-Domain Power Management | Independent shutdown of WLAN/MCU domains and fine-grained clock gating - achieves <10 µA deep-sleep current for battery-powered nodes |
| Analog Peripherals | 12-bit/2 MSps ADC (8 single/4 diff), 10-bit/500 kSps DAC, 2 analog comparators - supports sensor interfacing and analog control without external signal conditioning |
Applications
| Smart Home Thermostat | Wi-Fi Smart Plug |
|---|---|
Use Scenario: Wireless temperature sensing, scheduling, and HVAC control via cloud API. IC Role / Device Role / Timing Role: Primary application MCU and Wi-Fi network interface - handles sensor reading, PID control, TLS-secured MQTT communication, and OTA updates. Use Value: Integrated WLAN + Cortex-M4F eliminates separate Wi-Fi module and host MCU; USB OTG enables field firmware recovery without JTAG. |
Use Scenario: Remote AC outlet control with energy monitoring and scheduling. IC Role / Device Role / Timing Role: System-on-chip managing relay control, current sensing ADC, Wi-Fi connectivity, and secure cloud handshake. Use Value: Hardware AES engine accelerates TLS handshakes; low-power sleep modes extend battery life in backup scenarios. |
| Smart Appliance Gateway | Industrial Wi-Fi Bridge |
Use Scenario: Refrigerator or washer connecting legacy appliance buses (e.g., LIN, PWM) to Wi-Fi/IP network. IC Role / Device Role / Timing Role: Protocol translator and edge node - runs custom firmware to parse appliance commands and forward via encrypted Wi-Fi. Use Value: 50 GPIOs and multiple UART/SSP interfaces enable direct connection to diverse appliance control buses without level shifters. |
Use Scenario: Bridging Bluetooth Mesh or Zigbee sensors to enterprise Wi-Fi infrastructure in building automation. IC Role / Device Role / Timing Role: Dual-role network bridge - maintains concurrent BLE/Wi-Fi stacks and routes packets with minimal latency. Use Value: Independent WLAN/MCU power domains allow BLE subsystem to remain active while Wi-Fi sleeps - optimizing energy per packet. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar wireless microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESP32-WROOM-32 | Single-core or dual-core Xtensa LX6, 240 MHz; integrated 4 MB Flash; lacks USB OTG and hardware WPA3-SAE | Stronger Wi-Fi coexistence and BLE integration; weaker cryptographic acceleration and no native USB device/host capability | Preferred for cost-sensitive consumer devices needing BLE + Wi-Fi; less suitable for USB-dependent firmware recovery or WPA3 enterprise deployments |
| RTL8720DN | ARM Cortex-M23 @ 200 MHz; 2 MB Flash; supports WPA3 but no USB OTG; lower GPIO count (32) | Optimized for ultra-low-power always-on sensing; limited analog peripherals (no DAC, 12-bit ADC only) | Better for battery-powered sensor nodes; insufficient I/O and USB for appliance control or audio gateway use cases |
Compared with ESP32-WROOM-32 and RTL8720DN, the 88MW322-A0-NXUE/AZ uniquely combines USB 2.0 OTG, hardware WPA3-SAE, 50 GPIOs, and dual-domain power control - making it optimal for Wi-Fi-connected appliances requiring field serviceability, enterprise security, and multi-interface peripheral control.
Availability
88MW322-A0-NXUE/AZ is available at Aetrix Electronics and suitable for smart home thermostats, Wi-Fi-enabled smart plugs, and industrial Wi-Fi bridges requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for 88MW322-A0-NXUE/AZ 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 markets, with headquarters in Eindhoven, Netherlands.
The 88MW322-A0-NXUE/AZ belongs to NXP's i.MX RT and QN90xx wireless MCU family, designed specifically for secure, low-power Wi-Fi 4 (802.11n) edge devices in smart home, appliance, and industrial automation applications.
FAQ
What is the primary function of the 88MW322-A0-NXUE/AZ in a Wi-Fi-connected smart appliance?
The 88MW322-A0-NXUE/AZ serves as a fully integrated wireless microcontroller SoC, combining an ARM Cortex-M4F application processor and a dedicated IEEE 802.11b/g/n WLAN subsystem. In smart appliances like refrigerators or washing machines, the 88MW322-A0-NXUE/AZ manages sensor data acquisition, motor control logic, secure cloud communication via TLS/MQTT, and over-the-air firmware updates - all without requiring external Wi-Fi modules or companion MCUs.
Does the 88MW322-A0-NXUE/AZ support USB 2.0 OTG in both host and device modes?
Yes, the 88MW322-A0-NXUE/AZ supports USB 2.0 OTG in both host and device modes. Its dedicated USB_DP, USB_DM, USB_ID, and USB_VBUS pins enable automatic role detection and switching. In device mode, it enumerates as a CDC ACM or MSC class device; in host mode, it can drive USB peripherals such as flash drives or debug adapters - a capability confirmed in Section 1.4 (Table 5) of the official datasheet.
How does the 88MW322-A0-NXUE/AZ achieve low-power operation in battery-backed applications?
The 88MW322-A0-NXUE/AZ achieves low-power operation through six configurable power modes (active, idle, standby, sleep, shutoff, power-down), independent power domains for WLAN and MCU subsystems, integrated buck DC-DC converter (1.8 V for WLAN), and wake-up sources including RTC, GPIO, and IRQ. Deep-sleep current is specified below 10 µA, enabling multi-year battery life in intermittently active sensor nodes - validated in Section "Power Management" of the datasheet.
What security features are implemented in hardware on the 88MW322-A0-NXUE/AZ?
The 88MW322-A0-NXUE/AZ implements Secure Boot, AES-CCMP (WPA2), AES-Cipher-Based Message Authentication Code (CMAC) per 802.11w, WAPI, and WPA3-SAE in dedicated hardware. These accelerate cryptographic operations and isolate key storage from software access. The hardware engine supports TKIP, CCMP, and CMAC simultaneously - ensuring robust protection for management frames, data payloads, and firmware integrity without CPU overhead.
Is the 88MW322-A0-NXUE/AZ pin-compatible with the 88MW320 series?
No, the 88MW322-A0-NXUE/AZ is not pin-compatible with the 88MW320. It uses an 88-pin QFN (10×10 mm), whereas the 88MW320 uses a 68-pin QFN (8×8 mm). Key differences include the presence of USB OTG pins (USB_DP, USB_DM, USB_ID), additional GPIOs (50 vs. 35), and four General Purpose Timers (vs. two). Layout migration requires PCB redesign - confirmed in Table 1 ("Package Feature Differences") of the datasheet.
88MW322-A0-NXUE/AZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 88-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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/AZ FAQ
1.How can I place an order for 88MW322-A0-NXUE/AZ through Aetrix?
Please submit a Request for Quotation (RFQ) for 88MW322-A0-NXUE/AZ 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/AZ reliable?
The price and inventory of 88MW322-A0-NXUE/AZ 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/AZ is usually 5 days.
3.What payment methods are accepted for 88MW322-A0-NXUE/AZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 88MW322-A0-NXUE/AZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 88MW322-A0-NXUE/AZ?
88MW322-A0-NXUE/AZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 88MW322-A0-NXUE/AZ 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/AZ?
For technical support, including 88MW322-A0-NXUE/AZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 88MW322-A0-NXUE/AZ requirements.
6.How does Aetrix verify that 88MW322-A0-NXUE/AZ is sourced from the original manufacturer or authorized distributors?
All 88MW322-A0-NXUE/AZ 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/AZ meets industry standards.
7.What is the process for return or replacement of 88MW322-A0-NXUE/AZ?
All 88MW322-A0-NXUE/AZ units undergo pre-shipment inspection (PSI). If there is an issue with 88MW322-A0-NXUE/AZ, 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/AZ part is unused and in its original packaging.
Return procedure for 88MW322-A0-NXUE/AZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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