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Silicon Labs SLEXP4320A

Name: SLEXP4320A
Brand: Silicon Labs
SKU: SLEXP4320A
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SLEXP4320A

Manufacturer:: Silicon Labs

Category:: RF, RFID, Wireless Evaluation Boards

Package:

Datasheet:: SLEXP4320A.pdf

Description:: WGM110 WI-FI EXPANSION KIT

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:3,108

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Product details

Overview

SLEXP4320A from Silicon Labs is a Wi-Fi expansion kit comprising the BRD8016A Wireless Expansion Board and BRD4320A WGM110 Wi-Fi Module Radio Board, designed to add certified 802.11b/g/n connectivity to EFM32 MCU Starter Kits or Raspberry Pi HAT-compatible systems via UART or SPI host interfaces.

For engineers reviewing the SLEXP4320A datasheet, SLEXP4320A pinout, SLEXP4320A application, or SLEXP4320A equivalent, this kit enables rapid evaluation of network co-processor (NCP) mode Wi-Fi integration with preconfigured BGAPI firmware, dual-host compatibility (STK/HAT), and on-board debug support via Mini Simplicity connector.

Technical Context

The SLEXP4320A implements a hardware-integrated evaluation platform where the WGM110 module (ARM Cortex-M3, 1 MB Flash, 128 kB RAM) operates as a standalone NCP-offloading TCP/IP stack, Wi-Fi protocol handling, and HTTP server functionality from the host MCU. It supports UART (default, 115.2 kbps, RTS/CTS) and reprogrammable SPI slave interfaces.

Hardware abstraction is achieved through standardized expansion headers: a 20-pin angled EXP header for Silicon Labs STKs (with fixed SPI/UART/I²C mappings) and a solderable 40-pin Raspberry Pi HAT connector compliant with RPi HAT EEPROM identification. Power is selectable between low-power AEM (VMCU rail) and high-power LDO (5V-derived) modes.

Key Specifications

Parameter	Value and Actual Design Meaning
Kit Composition	BRD8016A Wireless Expansion Board + BRD4320A WGM110 Wi-Fi Module Radio Board
Wi-Fi Standard	IEEE 802.11b/g/n, FCC/IC/Japan/Korea/CE certified
Default Host Interface	UART with RTS/CTS flow control at 115.2 kbps using BGAPI serial protocol
Alternative Host Interface	SPI slave interface (requires firmware reprogramming)
Host Platform Support	EFM32 Pearl Gecko PG1/PG12 and Giant Gecko GG11 Starter Kits; Raspberry Pi (HAT mode, requires soldered connector)
Power Options	Selectable Low Power (AEM/VMCU rail) or High Power (LDO from 5V) mode via mechanical switch
Debug Interface	10-pin Mini Simplicity connector supporting SWD, virtual COM port, and energy profiling

Availability

SLEXP4320A is available at Aetrix Electronics and suitable for embedded IoT prototyping, wireless gateway development, and Raspberry Pi-based connected device validation requiring stable component supply and full documentation access.

Supply support for SLEXP4320A 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

Silicon Labs is a fabless semiconductor company specializing in secure, intelligent wireless and wired connectivity solutions for IoT, industrial, and consumer applications.

The SLEXP4320A belongs to Silicon Labs' Wi-Fi evaluation kit product line, engineered to accelerate time-to-market for embedded Wi-Fi integration by providing pre-certified radio hardware, standardized host interfaces, and seamless Simplicity Studio toolchain support.

FAQ

What is the primary function of the SLEXP4320A?

The SLEXP4320A is a complete evaluation kit that integrates the BRD8016A Wireless Expansion Board and BRD4320A WGM110 Wi-Fi Module Radio Board. Its primary function is to enable rapid prototyping and validation of Wi-Fi connectivity in embedded systems-either as a Network Co-Processor (NCP) paired with an EFM32 MCU Starter Kit or as a Raspberry Pi HAT. The SLEXP4320A ships with preloaded firmware configured for UART-based BGAPI communication and requires no initial module programming.

Which host microcontrollers are compatible with the SLEXP4320A?

The SLEXP4320A is explicitly validated for use with Silicon Labs EFM32 Pearl Gecko PG1 (SLSTK3401A), PG12 (SLSTK3402A), and Giant Gecko GG11 (SLSTK3701A) Starter Kits via the 20-pin EXP header. It also supports Raspberry Pi models via its HAT-compliant 40-pin connector-though this requires soldering a dual-row female socket. The SLEXP4320A does not include an MCU; it must be used alongside one of these supported host platforms.

Does the SLEXP4320A support both UART and SPI communication with the host?

Yes-the SLEXP4320A supports UART by default (115.2 kbps, RTS/CTS enabled, BGAPI protocol), and SPI as an alternative host interface. However, SPI operation requires reprogramming the WGM110 module firmware using Simplicity Studio and the Mini Simplicity debug connector. The default factory firmware only enables UART; SPI functionality is not active out-of-box and must be explicitly enabled and configured.

How is power managed on the SLEXP4320A?

The SLEXP4320A offers two power configurations via a mechanical switch: Low Power (AEM) mode draws power from the host STK's VMCU rail, enabling accurate energy measurement; High Power (LDO) mode uses an on-board LDO regulator powered from the 5V rail-required when connecting to Raspberry Pi or running high-power Wi-Fi transmissions. Connecting both STK and Raspberry Pi simultaneously is prohibited to prevent power conflicts.

Can the SLEXP4320A be used for production firmware development?

Yes-the SLEXP4320A includes a 10-pin Mini Simplicity connector that provides full Serial Wire Debug (SWD) access to the WGM110 module, enabling firmware reprogramming, real-time debugging, and energy profiling using Simplicity Studio and a compatible debug adapter (e.g., SLSDA001A). This makes the SLEXP4320A suitable not only for evaluation but also for end-to-end firmware development and validation of custom BGScript or host-driven applications targeting the WGM110.

SLEXP4320A Specifications

Product attributes: Attribute value

Manufacturer:: Silicon Labs

Series:: Wizard Gecko

Packaging:: Bulk

Product Status:: Obsolete

Type:: Transceiver; 802.11 b/g/n (Wi-Fi, WiFi, WLAN)

Frequency:: 2.4GHz

Contents:: Board(s)

Utilized IC / Part:: WGM110

SLEXP4320A FAQ

1.How can I place an order for SLEXP4320A through Aetrix?

Please submit a Request for Quotation (RFQ) for SLEXP4320A 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 SLEXP4320A reliable?

The price and inventory of SLEXP4320A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SLEXP4320A is usually 5 days.

3.What payment methods are accepted for SLEXP4320A?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SLEXP4320A transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SLEXP4320A?

SLEXP4320A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SLEXP4320A 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 SLEXP4320A?

For technical support, including SLEXP4320A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SLEXP4320A requirements.

6.How does Aetrix verify that SLEXP4320A is sourced from the original manufacturer or authorized distributors?

All SLEXP4320A 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 SLEXP4320A meets industry standards.

7.What is the process for return or replacement of SLEXP4320A?

All SLEXP4320A units undergo pre-shipment inspection (PSI). If there is an issue with SLEXP4320A, 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 SLEXP4320A part is unused and in its original packaging.

Return procedure for SLEXP4320A:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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