WF111-E-V1 Silicon Labs Integrated Circuit (Other) In Stock
The Silicon Labs WF111-E-V1 is a 2.4 GHz 802.11 b/g/n wireless LAN module with SPI and SDIO host interfaces, supporting IEEE 802.11n data rates up to 72 Mbps. It targets embedded IoT applications including navigation devices, point-of-sale terminals, RFID readers, and wireless camera systems. Available from authorized distributors with global stock and fast shipping.
- Manufacturer
- Silicon Labs
- Package
- Other
- Pin Count
- 33
- Lifecycle
- ACTIVE
- Datasheet
- WF111-E-V1 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 2.4 GHz 802.11 b/g/n WLAN with up to 72 Mbps PHY rate for reliable embedded IoT connectivity
- Dual SPI and SDIO host interfaces enable integration with a wide range of host microcontrollers and SoCs
- Certified pre-integrated module reduces RF design effort and shortens time to market for wireless products
- Low-power design with sleep modes supports battery-operated devices such as portable RFID readers and cameras
Applications
The WF111-E-V1 is designed for embedded Wi-Fi connectivity in point-of-sale terminals, navigation devices, wireless security cameras, and RFID readers that require reliable 2.4 GHz 802.11 b/g/n links in space-constrained industrial enclosures. Its SPI and SDIO interfaces allow straightforward integration with embedded Linux or RTOS-based host processors without RF design expertise. The module's pre-certified design simplifies FCC and CE regulatory approval, accelerating product launches in regulated markets.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the maximum throughput the WF111-E-V1 can deliver over its 802.11n link in a point-of-sale terminal?
The WF111-E-V1 supports 802.11n at 2.4 GHz with a PHY rate of up to 72 Mbps using a single spatial stream. In a real-world point-of-sale terminal environment with typical TCP/IP overhead, effective application throughput reaches approximately 20 to 30 Mbps, which is more than sufficient for credit card transaction processing, firmware OTA updates, and receipt printing over a local Wi-Fi network.
How does the WF111-E-V1 connect to a host processor using SPI compared to SDIO in an embedded camera design?
Over SPI, the WF111-E-V1 transfers data at up to 12 MHz using a 4-wire interface, suitable for lower-throughput hosts like 8-bit microcontrollers managing RFID or basic sensor data. SDIO mode supports higher clock rates up to 50 MHz, delivering significantly greater bandwidth for wireless camera streaming where 720p H.264 video at 15 fps requires sustained 5 to 8 Mbps throughput from the host to the module.
For a battery-powered RFID reader, what power management features in WF111-E-V1 extend operational life?
The WF111-E-V1 implements 802.11 power-save mode (PSM), allowing the RF subsystem to enter a low-power sleep state between beacon intervals while maintaining network association. In PSM, idle current drops below 1 mA compared to the active receive current of approximately 100 mA at 3.3 V, enabling a 2000 mAh battery to sustain days of intermittent RFID scan-and-upload operation.
Which regulatory certifications does WF111-E-V1 carry, and how does this affect product development timelines?
The WF111-E-V1 carries pre-integrated FCC, IC, and CE certifications covering 2.4 GHz 802.11 b/g/n operation, which means end-product manufacturers using the module in a shielded enclosure can leverage modular approval rather than conducting full RF certification. This typically reduces regulatory approval timelines by 8 to 12 weeks and avoids the $20,000 to $50,000 cost of an independent FCC certification campaign.
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