NXP Semiconductors 88MW300-B0-NAPI/AK

Overview

88MW300-B0-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 WLAN subsystem with MAC/baseband/RF (2.4 GHz, 1×1 SISO). It supports QSPI Flash XIP via 32 KB SRAM cache and operates across -30°C to +85°C for IoT edge nodes.

For engineers reviewing the 88MW300-B0-NAPI/AK datasheet, 88MW300-B0-NAPI/AK pinout, 88MW300-B0-NAPI/AK application, or 88MW300-B0-NAPI/AK equivalent, key selection criteria include its 68-pin QFN package (8×8 mm), absence of USB OTG, 35 GPIOs, dual GPTs, and integrated hardware cryptographic engine supporting WPA2/WPA3 security protocols.

Technical Context

The 88MW300-B0-NAPI/AK integrates two independent subsystems: a WLAN subsystem with direct-conversion RF, integrated PA/LNA/T-R switch, and mature 802.11b/g/n baseband; and an application subsystem centered on the ARM Cortex-M4F core running at 200 MHz with tightly coupled memory resources. The WLAN subsystem handles real-time protocol processing offloading, while the application CPU manages custom firmware and peripheral control.

Power management includes multiple low-power states (active, idle, standby, sleep, shutoff, power-down), independent power domains, integrated buck DC-DC converter (1.8 V for WLAN), and brown-out detection. The device uses a 38.4 MHz crystal for main clock and 32.768 kHz crystal for RTC, with dedicated RF_TR, RESETn, and XTAL_IN/OUT pins.

Key Specifications

Pinout & Package

88MW300-B0-NAPI/AK is housed in a 68-pin QFN package (8×8 mm, 0.4 mm pitch) with exposed thermal pad. Pin functions are multiplexed across GPIOs, except for dedicated RF_TR, RESETn, XTAL_IN/OUT, and power rails. The package supports industrial-grade thermal performance per NXP's Section 22.5.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar wireless microcontroller applications.

Compared with ESP32-WROOM-32 and RTL8720DN, the 88MW300-B0-NAPI/AK offers superior RF integration (no external PA/LNA tuning), certified WPA3 support, and smaller native package - making it optimal for space-constrained, security-critical, and production-ready IoT endpoints.

Availability

88MW300-B0-NAPI/AK is available at Aetrix Electronics and suitable for smart home thermostats, Wi-Fi-enabled kitchen appliances, wireless security sensors, and BLE-to-Wi-Fi gateway bridges requiring stable component supply and long-term lifecycle assurance.

Supply support for 88MW300-B0-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 focused on secure connectivity solutions for automotive, industrial, and IoT markets, with annual R&D investment exceeding $1.4B.

The 88MW300 series belongs to NXP's i.MX RT crossover MCU family targeting ultra-low-power wireless edge nodes; it was architected to replace discrete MCU + Wi-Fi chip designs in cost- and size-sensitive IoT endpoints.

FAQ

What is the maximum operating frequency of the ARM Cortex-M4F core in the 88MW300-B0-NAPI/AK?

The ARM Cortex-M4F core in the 88MW300-B0-NAPI/AK operates at a maximum bus clock frequency of 200 MHz. This speed is sustained under full voltage and thermal conditions specified in the extended temperature range (-30°C to +85°C). The core includes a floating-point unit and memory protection unit, enabling deterministic real-time execution of sensor fusion, audio processing, or control algorithms without external acceleration. All 88MW300-B0-NAPI/AK silicon revisions support this frequency natively.

Does the 88MW300-B0-NAPI/AK support USB On-The-Go functionality?

No, the 88MW300-B0-NAPI/AK does not support USB On-The-Go. USB OTG is exclusive to the 88-pin 88MW302 variant. The 88MW300-B0-NAPI/AK is packaged in a 68-pin QFN and omits the USB_DP, USB_DM, USB_ID, and related analog power pins. Designers requiring USB must select the 88MW302 or implement external USB-to-UART bridging. This distinction is explicitly documented in NXP's Product Data Sheet Rev. 6, Table 1.

How many general-purpose timers (GPTs) are available on the 88MW300-B0-NAPI/AK?

The 88MW300-B0-NAPI/AK includes two General Purpose Timers (GPT0 and GPT1), each with six configurable channels (CH0–CH5), for a total of 12 timer channels. These support PWM generation, input capture, quadrature decoding, and LED dimming. GPT0 is accessible on GPIO_0–GPIO_5; GPT1 maps to GPIO_28–GPIO_33 and GPIO_24. This matches the "2 GPTs" specification in NXP's Package Feature Differences table (Page 3).

What wireless security protocols does the 88MW300-B0-NAPI/AK hardware accelerate?

The 88MW300-B0-NAPI/AK hardware accelerates WEP (64/128-bit), TKIP (WPA), AES-CCMP (WPA2), AES-CMAC (802.11w), and Simultaneous Authentication of Equals (SAE) for WPA3. Its dedicated cryptographic engine performs encryption/decryption and message authentication in parallel with CPU execution, enabling full 802.11i and 802.11w compliance without software overhead. Secure Boot enforces signed firmware validation prior to execution.

Is an external crystal oscillator required for the 88MW300-B0-NAPI/AK, and what frequency?

Yes, the 88MW300-B0-NAPI/AK requires an external 38.4 MHz fundamental-mode crystal connected to XTAL_IN and XTAL_OUT pins for main system clock generation. A separate 32.768 kHz crystal is required for RTC operation on XTAL32K_IN/OUT. Both crystals are mandatory for full WLAN and timing functionality; no internal RC oscillator substitutes for these references in production mode.