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Microchip Technology WILCS02ICT-V/ZZX
- Part No.:
- WILCS02ICT-V/ZZX
- Manufacturer:
- Microchip Technology
- Category:
- RF Transceiver ICs
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
WILCS02ICT-V/ZZX.pdf
- Description:
- WI-FI LINK CONTROLLER SOC V, 802
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
WILCS02ICT-V/ZZX from Microchip Technology is a 2.4 GHz IEEE 802.11b/g/n single-stream (1×1) Wi-Fi Link Controller IC with integrated high-power amplifier (HPA), low-noise amplifier (LNA), and RF switches. It delivers hardware-accelerated security (AES-128/192/256, SHA-2, ECDSA-521, RSA-2048), 2 MB internal flash, and operates at 3.3 V (3.0–3.6 V) across –40°C to +105°C. It serves as the core wireless SoC in industrial Wi-Fi modules for secure embedded host interfacing via SDIO or SPI.
For engineers reviewing the WILCS02ICT-V/ZZX datasheet, WILCS02ICT-V/ZZX pinout, WILCS02ICT-V/ZZX application, or WILCS02ICT-V/ZZX equivalent, key selection criteria include AEC-Q100 Grade 2 qualification, hardware PTA coexistence support for Bluetooth®, immutable secure boot with root of trust, and dual-host-interface strapping (SDIO/SPI) using DFU_RX/STRAP1 and DFU_TX/STRAP2 pins.
Technical Context
The WILCS02ICT-V/ZZX implements a full WLAN MAC/PHY stack with baseband processing, RF transceiver, and crypto engines on-die. Its 48-pin VQFN package integrates dedicated 1.5 V supply domains for RF blocks (SYN_VCO_VDD15, RXR_LNA1_VDD15), analog front-end (AFE_VDD15), and digital logic (SPI_VDD15), all regulated by an on-chip PMU with buck and MLDO outputs.
It supports two mutually exclusive operational modes: either PTA-based Wi-Fi/Bluetooth coexistence (via RTCC_OSC_IN/PTA_BT_ACTIVE, PTA_WLAN_ACTIVE, PTA_BT_PRIO) or RTCC oscillator functionality (RTCC_OSC_IN/OUT), with current firmware enabling only PTA mode. Host interface selection is determined at power-on by resistor strapping on DFU_RX/STRAP1 (SDIO low / SPI high) and DFU_TX/STRAP2 (pull-high recommended).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Wi-Fi Standard | IEEE 802.11b/g/n, 2.4 GHz band only, 20 MHz bandwidth, 1×1 SISO - enables cost-optimized, single-antenna Wi-Fi connectivity compliant with Wi-Fi Alliance certification. |
| Operating Voltage | 3.0–3.6 V (3.3 V typical) for VDD and VDDIO - requires single-rail 3.3 V supply with decoupling; no separate 1.5 V external supply needed due to integrated PMU. |
| Temperature Range | –40°C to +105°C - qualified to AEC-Q100 Grade 2, supporting under-hood automotive and harsh industrial environments. |
| Security Acceleration | AES-128/192/256 (ECB/CBC/CTR/CFB/OFB), SHA-1/SHA-2, AES-GCM, HMAC, ECDSA-521, RSA-2048 - offloads crypto operations from host CPU, enabling secure OTA updates and TLS handshake acceleration. |
| Memory | 2 MB stacked flash (internal) - stores full Wi-Fi firmware, driver binaries, and application assets; eliminates need for external flash in compact designs. |
| Host Interface | Configurable SDIO v2.0 or SPI (SDIO-SPI mode) - selected via hardware strapping; SDIO offers higher throughput (25 Mbps), SPI simplifies routing in space-constrained layouts. |
| RF Integration | Integrated HPA, LNA, TX/RX RF switches - eliminates discrete RF front-end components, reduces BOM count, and ensures calibrated 2.4 GHz transmit/receive performance. |
Pinout & Package
WILCS02ICT-V/ZZX is housed in a 48-pin Very Thin Quad Flat No-lead (VQFN) package measuring 7 mm × 7 mm × 0.9 mm, with exposed thermal pad on bottom side for PCB heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DFU_RX/STRAP1 (Pin 34) | Strap input / DFU receive | Determines host interface: pulled low → SDIO mode; pulled high → SPI mode. Also serves as UART RX for device firmware update. |
| DFU_TX/STRAP2 (Pin 35) | Strap input / DFU transmit | Reserved for future interface extensions; recommended pull-high (10 kΩ) for forward compatibility and stable boot behavior. |
| PTA_WLAN_ACTIVE (Pin 43) | Output signal | Active-high indication that WLAN is transmitting - used by Bluetooth controller to defer transmission and avoid RF interference. |
| RTCC_OSC_IN/PTA_BT_ACTIVE (Pin 40) | Input signal | Selectable function: either 32.768 kHz RTCC oscillator input or Bluetooth active indication - only one enabled per firmware build. |
| VDD33 (Pins 14, 41, 45) | Main power domain supply | Three dedicated 3.3 V inputs reduce IR drop and improve noise immunity; must be decoupled locally with 0.1 µF + 4.7 µF capacitors. |
| PMU_BK_LX (Pin 48) | PMU buck regulator output | 1.5 V output driving internal RF/analog blocks; requires external LC filter (4.7 µH + 10 µF) for ripple suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware PTA Coexistence | Three-wire IEEE 802.15.2-compliant arbitration interface enables deterministic Wi-Fi/Bluetooth time-slicing without host CPU intervention. |
| Immutable Secure Boot | Root-of-trust boot flow verifies firmware signature using on-chip public key crypto engine before execution - prevents unauthorized firmware injection. |
| On-chip Flash Storage | 2 MB stacked flash eliminates external memory, reduces PCB area, and avoids SPI bus contention during concurrent host/Wi-Fi operations. |
| Multi-Rail PMU | Integrated power management unit provides isolated 1.5 V supplies for RF, analog, and digital subsystems - improves EMI performance and simplifies power sequencing. |
| Industrial Temperature Range | –40°C to +105°C operation with AEC-Q100 Grade 2 qualification - validated for extended life in factory automation, motor drives, and transportation control units. |
Applications
| Industrial Wireless Sensor Node | Secure Gateway for Smart Lock |
|---|---|
Use Scenario: Battery-powered vibration/temperature sensor node deployed in rotating machinery monitoring. IC Role / Device Role / Timing Role: Wi-Fi Link Controller IC handling MAC/PHY, RF transmission, and TLS-secured MQTT packet formation. Use Value: Integrated HPA extends range to 100+ m in noisy factory environments; hardware crypto accelerates TLS 1.2 handshake within 80 ms, preserving battery life. |
Use Scenario: BLE-to-Wi-Fi bridge in residential smart lock enabling remote access via cloud API. IC Role / Device Role / Timing Role: Secure wireless SoC managing encrypted credential exchange, firmware updates, and PTA-coordinated dual-radio operation. Use Value: Immutable secure boot prevents persistent malware; PTA interface ensures zero-packet-loss Bluetooth pairing while Wi-Fi uploads audit logs. |
| Automotive Telematics Module | Wi-Fi Dongle for Legacy Industrial PC |
Use Scenario: CAN-to-cloud data logger mounted in vehicle cabin for OBD-II diagnostics upload. IC Role / Device Role / Timing Role: AEC-Q100 Grade 2–qualified WLAN controller interfacing with host MCU over SDIO, performing secure DFU over HTTPS. Use Value: 105°C rating sustains operation near HVAC ducts; hardware AES-GCM encrypts CAN frames before Wi-Fi transmission, meeting ISO/SAE 21434 requirements. |
Use Scenario: USB-to-Wi-Fi adapter retrofit for legacy PLC programming PCs lacking native Wi-Fi. IC Role / Device Role / Timing Role: Standalone link controller providing Linux-compatible SDIO interface with minimal host driver footprint. Use Value: Pre-certified FCC/CE/UKCA compliance eliminates radio testing burden; 2 MB flash hosts full open-source wilc driver and firmware, enabling plug-and-play deployment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Wi-Fi Link Controller IC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESP32-WROOM-32 | Lacks AEC-Q100 qualification; uses external flash; no hardware PTA; dual-band (2.4/5 GHz); integrated Xtensa LX6 dual-core MCU. | Targets consumer IoT with rich RTOS support; unsuitable for automotive or high-reliability industrial control where temperature and coexistence assurance are mandatory. | Choose WILCS02ICT-V/ZZX when AEC-Q100 Grade 2, hardware PTA, or secure boot with immutable root of trust are required. |
| ATWILC3000-MR210PB | Same family successor with 802.11n/ac dual-band support; larger 64-pin QFN; higher peak current; requires external flash. | Designed for next-gen gateways needing 5 GHz offload; not pin-compatible; lacks –40°C to +105°C rating in base variant. | WILCS02ICT-V/ZZX remains optimal for cost-sensitive, thermally demanding 2.4 GHz-only deployments requiring proven qualification and minimal layout change. |
Compared with ESP32-WROOM-32 and ATWILC3000-MR210PB, the WILCS02ICT-V/ZZX uniquely combines AEC-Q100 Grade 2 operation, hardware PTA coexistence, and 2 MB integrated flash in a compact 7 mm × 7 mm VQFN - delivering certified reliability and reduced system-level complexity for industrial and automotive Wi-Fi edge nodes.
Availability
WILCS02ICT-V/ZZX is available at Aetrix Electronics and suitable for industrial control systems, automotive telematics modules, and secure smart lock gateways requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for WILCS02ICT-V/ZZX 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
Microchip Technology is a U.S.-based semiconductor manufacturer specializing in microcontrollers, analog devices, and secure connectivity solutions, with global design centers and ISO 9001-certified manufacturing.
The WILCS02IC product line delivers certified, secure, single-chip Wi-Fi solutions targeting industrial automation, automotive infotainment, and smart infrastructure - emphasizing hardware-rooted security, RF integration, and AEC-Q100 qualification.
FAQ
What is the operating temperature range of the WILCS02ICT-V/ZZX?
The WILCS02ICT-V/ZZX is rated for –40°C to +105°C and qualified to AEC-Q100 Grade 2. This specification applies specifically to the -V suffix variant, making it suitable for under-hood automotive applications and high-temperature industrial enclosures where ambient conditions exceed standard commercial-grade limits.
Does the WILCS02ICT-V/ZZX require external flash memory?
No. The WILCS02ICT-V/ZZX integrates 2 MB of stacked flash memory on-die, eliminating the need for external storage. This flash holds the complete Wi-Fi firmware, cryptographic keys, and application assets, reducing BOM count and PCB footprint compared to solutions requiring external SPI flash.
How is the host interface (SDIO vs. SPI) selected on the WILCS02ICT-V/ZZX?
Host interface selection is controlled at power-on via hardware strapping: DFU_RX/STRAP1 (Pin 34) pulled low configures SDIO mode; pulled high selects SPI mode. DFU_TX/STRAP2 (Pin 35) should be pulled high (10 kΩ) for stable boot and future compatibility - both pins must be set before reset release.
What RF certifications does the WILCS02ICT-V/ZZX itself hold?
The WILCS02ICT-V/ZZX SoC is not individually certified; regulatory approvals (FCC, CE, UKCA, etc.) apply to the fully assembled WILCS02 module (e.g., WILCS02PE/WILCS02UE). As the core IC, WILCS02ICT-V/ZZX enables those certifications through its pre-validated RF architecture, integrated matching, and compliance-ready firmware stack.
Can the WILCS02ICT-V/ZZX support both RTCC and PTA simultaneously?
No. The WILCS02ICT-V/ZZX supports either RTCC oscillator functionality (RTCC_OSC_IN/OUT) or PTA coexistence (PTA_BT_ACTIVE, PTA_WLAN_ACTIVE, PTA_BT_PRIO), but not both concurrently. Firmware determines which mode is active; current releases implement only PTA mode, and RTCC support requires future firmware updates.
Is the WILCS02ICT-V/ZZX pin-compatible with other variants in the WILCS02IC family?
Yes. All WILCS02IC variants - including WILCS02IC-I/ZZX, WILCS02ICT-I/ZZX, WILCS02IC-V/ZZX, and WILCS02ICT-V/ZZX - share identical 48-pin VQFN packaging, pinout, and electrical characteristics. Only temperature grade (I = –40°C to +85°C, V = –40°C to +105°C) and flash configuration (standard vs. T-flash) differ between part numbers.
WILCS02ICT-V/ZZX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 48-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Type:
- TxRx Only
- RF Family/Standard:
- Bluetooth, WiFi
- Protocol:
- 802.11b/g/n
- Modulation:
- CCK, DSSS, OFDM
- Frequency:
- -
- Data Rate (Max):
- 54Mbps
- Power - Output:
- 20dBm
- Sensitivity:
- -97dBm
- Memory Size:
- 2MB Flash
- Serial Interfaces:
- SDIO, SPI, UART
- GPIO:
- 10
- Voltage - Supply:
- 3V ~ 3.6V
- Current - Receiving:
- 88mA ~ 94mA
- Current - Transmitting:
- 249mA ~ 289mA
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 48-VQFN (7x7)
WILCS02ICT-V/ZZX FAQ
1.How can I place an order for WILCS02ICT-V/ZZX through Aetrix?
Please submit a Request for Quotation (RFQ) for WILCS02ICT-V/ZZX 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 WILCS02ICT-V/ZZX reliable?
The price and inventory of WILCS02ICT-V/ZZX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for WILCS02ICT-V/ZZX is usually 5 days.
3.What payment methods are accepted for WILCS02ICT-V/ZZX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for WILCS02ICT-V/ZZX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for WILCS02ICT-V/ZZX?
WILCS02ICT-V/ZZX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your WILCS02ICT-V/ZZX 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 WILCS02ICT-V/ZZX?
For technical support, including WILCS02ICT-V/ZZX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your WILCS02ICT-V/ZZX requirements.
6.How does Aetrix verify that WILCS02ICT-V/ZZX is sourced from the original manufacturer or authorized distributors?
All WILCS02ICT-V/ZZX 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 WILCS02ICT-V/ZZX meets industry standards.
7.What is the process for return or replacement of WILCS02ICT-V/ZZX?
All WILCS02ICT-V/ZZX units undergo pre-shipment inspection (PSI). If there is an issue with WILCS02ICT-V/ZZX, 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 WILCS02ICT-V/ZZX part is unused and in its original packaging.
Return procedure for WILCS02ICT-V/ZZX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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