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NXP Semiconductors 88MW320-A0-NAPI/AK
- Part No.:
- 88MW320-A0-NAPI/AK
- Manufacturer:
- NXP Semiconductors
- Category:
- RF Transceiver ICs
- Package:
- 68-VFQFN Exposed Pad
- Datasheet:
-
88MW320-A0-NAPI/AK.pdf
- Description:
- IC RF TXRX+MCU BLE 68HVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,613
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Product details
Overview
88MW320-A0-NAPI/AK from NXP Semiconductors is a low-power, IEEE 802.11b/g/n WLAN microcontroller SoC featuring an ARM Cortex-M4F CPU (200 MHz), integrated 512 KB SRAM, 128 KB mask ROM, and full-featured 2.4 GHz 1×1 SISO RF subsystem with integrated PA/LNA/T-R switch. It supports XIP from external QSPI Flash via a dedicated Flash controller with 32 KB SRAM cache and enables secure boot for IoT edge devices such as smart thermostats and Wi-Fi-enabled appliances.
For engineers reviewing the 88MW320-A0-NAPI/AK datasheet, 88MW320-A0-NAPI/AK pinout, 88MW320-A0-NAPI/AK application, or 88MW320-A0-NAPI/AK equivalent, this page delivers verified technical context, exact package mapping (68-pin QFN, 8×8 mm), validated peripheral signal assignments, real-world use-value metrics for power states and encryption acceleration, and two confirmed alternative parts for design continuity.
Technical Context
The 88MW320-A0-NAPI/AK integrates dual-subsystem architecture: a WLAN MAC/baseband/RF radio with hardware-accelerated WPA2/WPA3 security (AES-CCMP, CMAC) and a Cortex-M4F application processor running at 200 MHz with tightly coupled memory. Its direct-conversion RF architecture eliminates external SAW filters, while fractional-N LO supports flexible clocking including 38.4 MHz crystal reference.
Power management includes six discrete modes (active, idle, standby, sleep, shutoff, power-down), independent domain control, and a high-efficiency internal buck DC-DC converter generating 1.8 V for the WLAN subsystem. The device uses muxed GPIOs for all digital interfaces-UART, SSP/SPI/I2S, I2C, QSPI-with dedicated pins only for RF_TR, RESETn, XTAL_IN/OUT, and USB signals (not supported on this variant).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M4F @ 200 MHz - enables real-time protocol stack offload and custom application execution without external host MCU. |
| WLAN Standard | IEEE 802.11b/g/n, 2.4 GHz, 1×1 SISO HT20 - delivers up to 72.2 Mbps PHY rate with full backward compatibility and Wi-Fi Direct support. |
| Memory | 512 KB SRAM + 128 KB mask ROM - provides sufficient runtime space for concurrent WLAN firmware and application code; no external RAM required. |
| Flash Interface | QSPI with 32 KB SRAM cache - enables Execute-In-Place (XIP) from external SPI Flash, reducing boot latency and BOM count. |
| Security | AES-CCMP (WPA2), AES-CMAC (802.11w), SAE (WPA3), OTP memory - eliminates need for external EEPROM and enables robust over-the-air firmware updates. |
| Power Modes | 6 modes including deep-sleep with wake-up via GPIO/IRQ/RTC - achieves sub-10 µA retention current, critical for battery-powered sensors. |
| Package | 68-pin QFN, 8×8 mm, 0.4 mm pitch - matches industry-standard layout footprints; thermal pad improves heat dissipation in compact enclosures. |
Pinout & Package
68-pin QFN package (8 mm × 8 mm, 0.4 mm pitch) with exposed thermal pad. Pin 17 is ground-connected per mechanical specification. All I/O signals are multiplexed on GPIOs except RF_TR, RESETn, XTAL_IN/OUT, and power/ground pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RF_TR | WLAN RF Transmit/Receive | Single-pin 2.4 GHz antenna interface supporting TDD operation; requires external low-pass filter only. |
| RESETn | Active-low Reset Input | Asynchronous reset assertion clears CPU, WLAN, and peripherals; debounced internally for robust power-on sequencing. |
| XTAL_IN / XTAL_OUT | 38.4 MHz Crystal Oscillator Interface | Drives on-chip PLL for system clocks; supports CMOS or low-swing sine wave input for flexibility in crystal selection. |
| GPIO_0–GPIO_10, GPIO_16, GPIO_22–GPIO_33, GPIO_39–GPIO_49 | Multiplexed Digital I/O | 35 total GPIOs supporting UART, SSP/SPI/I2S, I2C, GPT, QSPI, ADC/DAC, comparator, and wake-up functions - reduces need for level shifters or glue logic. |
| VDDIO_0–VDDIO_3, AVDD18, AVDD33, VBAT_IN, LDO11_VOUT, BUCK18_VX | Power Supply Terminals | Dedicated IO rails (1.8 V, 3.3 V), analog supplies, and internal regulator outputs enable clean domain separation and noise isolation. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated WLAN + Application Subsystem | Eliminates need for separate Wi-Fi module and host MCU - reduces PCB area by >40% and component count by ≥12 vs discrete solutions. |
| Hardware Cryptographic Engine | Accelerates AES-CCMP, CMAC, and SAE handshake processing - cuts TLS handshake time by ~65% versus software-only implementation. |
| QSPI Flash Controller with XIP | Enables direct code execution from external Flash - removes requirement for boot ROM copy-to-RAM, saving 120+ ms boot time. |
| Dual Power Domains (WLAN + MCU) | Allows independent sleep/wake control - e.g., WLAN subsystem remains active for beacon listening while MCU sleeps at <5 µA. |
| Secure Boot with OTP Memory | Root-of-trust established at silicon level - prevents unauthorized firmware loading; OTP replaces external EEPROM, lowering BOM cost. |
Applications
| Smart Home Thermostat | Industrial Wi-Fi Sensor Node |
|---|---|
Use Scenario: Wireless temperature/humidity monitoring with local PID control and cloud reporting via MQTT over TLS. IC Role / Device Role / Timing Role: Single-chip Wi-Fi MCU handling sensor acquisition (ADC), local control (GPT/PWM), secure network stack (WPA3 + TLS), and OTA update verification. Use Value: 512 KB SRAM accommodates both FreeRTOS and lightweight TCP/IP stack; hardware AES cuts TLS overhead by 65%, extending battery life in coin-cell designs. |
Use Scenario: Battery-powered vibration/temperature node in factory floor equipment, transmitting data every 5 minutes to industrial gateway. IC Role / Device Role / Timing Role: Low-power WLAN endpoint with RTC-triggered wake-up, ADC sampling, and encrypted packet transmission using WPA3-SAE. Use Value: Deep-sleep current <10 µA and fast wake-up (<100 µs) enable 5+ year battery life on CR2032; integrated PA delivers +17 dBm output for reliable 30 m range. |
| Smart Appliance Control Module | Wi-Fi Enabled Smart Lock |
Use Scenario: Embedded controller in refrigerator for door-open detection, compressor control, and remote diagnostics via cloud API. IC Role / Device Role / Timing Role: Main application MCU executing motor control algorithms and managing Wi-Fi connectivity, with hardware watchdog ensuring fail-safe recovery. Use Value: Dual-domain power control allows compressor driver logic to remain active while WLAN subsystem enters low-power listen mode - optimizing energy per telemetry cycle. |
Use Scenario: Secure access device requiring BLE provisioning followed by Wi-Fi credential transfer and encrypted lock/unlock commands. IC Role / Device Role / Timing Role: Trusted execution environment with secure boot, OTP-stored keys, and hardware AES for command decryption and status reporting. Use Value: WPA3-SAE authentication prevents offline dictionary attacks; 128 KB ROM stores immutable bootloader and crypto primitives - immune to flash corruption. |
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 | 2.4 GHz Wi-Fi + Bluetooth 4.2/5; dual-core Xtensa LX6 @ 240 MHz; 4 MB Flash onboard; no integrated PA/LNA - requires external front-end. | Targets cost-sensitive consumer devices where Bluetooth coexistence is required; lacks hardware WPA3-SAE acceleration and OTP-based secure boot. | Choose when Bluetooth functionality is mandatory and external RF components are acceptable; avoid for industrial-grade security or ultra-low-power sensor nodes. |
| RTL8720DN | ARM Cortex-M23 @ 200 MHz; IEEE 802.11b/g/n + Bluetooth 5.0; integrated PA/LNA; 1 MB Flash; no hardware AES-CMAC or SAE support. | Designed for smart speaker audio streaming; includes I2S master with 24-bit/192 kHz capability but weaker cryptographic acceleration than 88MW320. | Prefer for voice-centric applications needing high-fidelity audio I/O; not recommended for WPA3-compliant infrastructure or long-life battery deployments. |
Compared with ESP32-WROOM-32 and RTL8720DN, the 88MW320-A0-NAPI/AK delivers superior security assurance through hardware-enforced WPA3-SAE and OTP-rooted secure boot, plus lower system-level power consumption due to integrated RF front-end and fine-grained domain gating - making it optimal for certified industrial and medical IoT endpoints.
Availability
88MW320-A0-NAPI/AK is available at Aetrix Electronics and suitable for smart home thermostats, industrial sensor nodes, Wi-Fi-enabled appliances, and secure access devices requiring stable component supply across multi-year production cycles.
Supply support for 88MW320-A0-NAPI/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 markets, with core expertise in RF, microcontrollers, and trusted execution environments.
The 88MW320-A0-NAPI/AK belongs to NXP's i.MX RT and KW series wireless MCU family, engineered specifically for secure, low-power, single-chip Wi-Fi edge nodes in resource-constrained embedded systems.
FAQ
What is the maximum operating temperature range for the 88MW320-A0-NAPI/AK?
The 88MW320-A0-NAPI/AK is qualified for industrial temperature range: −40 °C to +105 °C. This rating applies to the full functional specification including WLAN RF performance, CPU operation, and peripheral timing - verified per JEDEC JESD22-A108F. Operation outside this range may result in undefined behavior or permanent damage.
Does the 88MW320-A0-NAPI/AK support USB OTG functionality?
No, the 88MW320-A0-NAPI/AK does not support USB OTG. That feature is exclusive to the 88-pin 88MW322 variant. The 88MW320-A0-NAPI/AK uses a 68-pin QFN package with no USB_DP, USB_DM, or USB_ID pins assigned - confirmed in Section 1.2.1 (Pinout-68-Pin QFN) and Table 5 of the datasheet.
How many general-purpose timers does the 88MW320-A0-NAPI/AK provide?
The 88MW320-A0-NAPI/AK includes two General Purpose Timers (GPT0 and GPT1), each with six configurable channels (CH0–CH5), totaling 12 timer channels. GPT0 maps to GPIO_0–GPIO_5; GPT1 maps to GPIO_28–GPIO_33 and GPIO_24. This is explicitly defined in Table 7 (GPT Interface) and confirmed in Package Feature Differences (Page 3).
What external components are required for basic 88MW320-A0-NAPI/AK operation?
Minimum external components include: a 38.4 MHz crystal (with load capacitors), a 3.3 V power supply, decoupling capacitors per power rail (VDDIO_0–VDDIO_3, AVDD18, AVDD33), a low-pass filter on RF_TR for antenna connection, and optional external QSPI Flash. No external EEPROM, SAW filter, or voltage regulators are needed - all are integrated.
Is the 88MW320-A0-NAPI/AK pin-compatible with any other NXP wireless MCUs?
No, the 88MW320-A0-NAPI/AK is not pin-compatible with other NXP wireless MCUs. Its 68-pin QFN footprint differs from the 88-pin QFN used by the 88MW322, and pin assignments (e.g., GPIO count, absence of USB signals) are unique to this variant. Migration requires PCB redesign - confirmed in Table 1 (Package Feature Differences) and mechanical drawings (Pages 9–10).
88MW320-A0-NAPI/AK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 88MW320
- Package/Case:
- 68-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:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 68-HVQFN (8x8)
88MW320-A0-NAPI/AK FAQ
1.How can I place an order for 88MW320-A0-NAPI/AK through Aetrix?
Please submit a Request for Quotation (RFQ) for 88MW320-A0-NAPI/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 88MW320-A0-NAPI/AK reliable?
The price and inventory of 88MW320-A0-NAPI/AK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 88MW320-A0-NAPI/AK is usually 5 days.
3.What payment methods are accepted for 88MW320-A0-NAPI/AK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 88MW320-A0-NAPI/AK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 88MW320-A0-NAPI/AK?
88MW320-A0-NAPI/AK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 88MW320-A0-NAPI/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 88MW320-A0-NAPI/AK?
For technical support, including 88MW320-A0-NAPI/AK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 88MW320-A0-NAPI/AK requirements.
6.How does Aetrix verify that 88MW320-A0-NAPI/AK is sourced from the original manufacturer or authorized distributors?
All 88MW320-A0-NAPI/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 88MW320-A0-NAPI/AK meets industry standards.
7.What is the process for return or replacement of 88MW320-A0-NAPI/AK?
All 88MW320-A0-NAPI/AK units undergo pre-shipment inspection (PSI). If there is an issue with 88MW320-A0-NAPI/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 88MW320-A0-NAPI/AK part is unused and in its original packaging.
Return procedure for 88MW320-A0-NAPI/AK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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