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Microchip Technology WILCS02IC-V/ZZX
- Part No.:
- WILCS02IC-V/ZZX
- Manufacturer:
- Microchip Technology
- Category:
- RF Transceiver ICs
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
WILCS02IC-V/ZZX.pdf
- Description:
- WI-FI LINK CONTROLLER SOC V, 802
- Quantity:
- Payment:
- Shipping:
Inventory:416
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Product details
Overview
WILCS02IC-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, ECC up to 521-bit), supports SDIO or SPI host interface, and operates at 3.3 V (3.0–3.6 V) across –40°C to +105°C. It enables secure wireless connectivity in industrial control and smart lock systems.
For engineers reviewing the WILCS02IC-V/ZZX datasheet, WILCS02IC-V/ZZX pinout, WILCS02IC-V/ZZX application, or WILCS02IC-V/ZZX equivalent, key selection considerations include its AEC-Q100 Grade 2 qualification, 48-pin VQFN package, 2 MB internal flash, hardware root of trust, and PTA-based Wi-Fi/Bluetooth coexistence support.
Technical Context
The WILCS02IC-V/ZZX integrates baseband PHY, WLAN MAC, crypto engine (CryptoMaster), and power management unit (PMU) on a single die. Its RF front-end includes TX/RX switching, HPA, LNA, and synthesizer blocks powered by dedicated 1.5 V and 3.3 V supply domains - including separate VDDIO, VDD, AVDD, and multiple 1.5 V rails for analog/RF subsystems.
It implements IEEE 802.15.2-compliant three-wire Packet Traffic Arbitration (PTA) for hardware-coordinated Wi-Fi/Bluetooth coexistence and supports immutable secure boot with hardware root of trust. The device requires external 40 MHz crystal (XTL_IN/XTL_OUT) and optionally supports 32.768 kHz RTCC oscillator or PTA_BT_ACTIVE input - mutually exclusive per firmware configuration.
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 |
| Operating Voltage | 3.0–3.6 V (3.3 V typical) for VDD and VDDIO; multiple internal 1.5 V supplies generated on-chip |
| Temperature Range | –40°C to +105°C (Grade 2 AEC-Q100 qualified) |
| Security Acceleration | Hardware CryptoMaster engine: AES-128/192/256 (ECB/CBC/CTR/CFB/OFB), SHA-1/SHA-2, ECC NIST p256/p384/p521, Curve25519, Ed25519, RSA-2048 |
| Host Interface | Configurable SDIO v2.0 or SPI (SDIO-SPI mode); selected via DFU_RX/STRAP1 and DFU_TX/STRAP2 pins |
| Internal Memory | Up to 2 MB stacked flash for firmware storage; immutable secure boot enforced by hardware root of trust |
| RF Integration | Integrated HPA, LNA, TX/RX RF switches, synthesizer, and 40 MHz crystal oscillator interface |
Pinout & Package
WILCS02IC-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 ground paddle on underside.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 14, 41, 45, 37 | VDDIO / VDD / AVDD | Dedicated 3.0–3.6 V supply inputs for I/O, main power domain, and analog block - require local decoupling |
| 2, 15–17, 20–26, 32, 46, 48 | 1.5 V Supply Inputs/Outputs | Multiple dedicated 1.5 V rails for RF synthesizer, PLL, VCO, LNA, mixer, BB, PMU MLDO/Buck - not externally driven |
| 3–9, 18–19, 34–35 | SDIO/SPI Host Interface | Shared SD_CMD/SCK1, SD_DATA[0–3], SD_CLK/UART1_RX, DFU_RX/STRAP1, DFU_TX/STRAP2 - interface mode set at boot |
| 10, 11, 13, 27, 29, 40, 42–43 | Control & Coexistence Signals | INTOUT (active-low interrupt), UART2_TX (debug log), MCLR (reset), PTA_WLAN_ACTIVE/PTA_BT_PRIO/PTA_BT_ACTIVE (coexistence handshake) |
| 27, 28, 30 | RF Power Supplies | TXR_HPA_VDD33 (dual pins), TXR_PPA_VDD33 - dedicated 3.3 V supplies for high-power transmit stages |
| 49 | GND | Thermal ground paddle - must be soldered to PCB thermal pad for thermal and electrical integrity |
Key Features
| Feature | Design Value |
|---|---|
| Hardware Root of Trust | Immutable secure boot enforces firmware authenticity and prevents unauthorized code execution at power-on |
| Wi-Fi/Bluetooth Coexistence | Three-wire PTA interface handles real-time arbitration without host CPU involvement, minimizing latency and packet loss |
| On-Chip Power Management | Integrated PMU generates all required 1.5 V rails - eliminates need for external LDOs and reduces BOM count |
| Secure Firmware Update | DFU over UART or host-assisted side-loading enables authenticated, encrypted over-the-air updates with rollback protection |
| Antenna Calibration Support | SD_CLK/UART1_RX and SD_DATA3/UART1_TX double as calibration test points for external antenna tuning |
Applications
| Industrial Control Systems | Smart Locks & Access Devices |
|---|---|
|
Use Scenario: Wireless sensor nodes and PLC gateways in factory automation requiring robust, low-latency 2.4 GHz connectivity under EMI-rich conditions. IC Role / Device Role / Timing Role: Wi-Fi Link Controller IC providing certified 802.11b/g/n MAC/PHY, hardware security, and coexistence with Bluetooth-enabled maintenance tools. Use Value: AEC-Q100 Grade 2 qualification ensures operation up to +105°C; integrated HPA/LNA maintains link margin in metal-enclosed enclosures. |
Use Scenario: Battery-powered electronic door locks needing secure, low-power Wi-Fi provisioning and remote firmware updates. IC Role / Device Role / Timing Role: Secure wireless SoC handling TLS handshakes, AES-GCM encryption, and secure DFU - all accelerated in hardware. Use Value: Hardware crypto offloads CPU, extends battery life; 2 MB flash stores dual firmware images for safe rollback during OTA updates. |
| Smart Factory Edge Gateways | Wi-Fi Dongles & Protocol Bridges |
|
Use Scenario: Edge gateways aggregating Modbus, CAN, or RS-485 field data and bridging to cloud via Wi-Fi. IC Role / Device Role / Timing Role: Link controller interfacing via SDIO to host ARM processor; provides PTA-driven coexistence with Bluetooth commissioning interfaces. Use Value: SDIO interface enables high-throughput data transfer (>20 Mbps); hardware PTA avoids software polling delays during concurrent radio use. |
Use Scenario: USB-to-Wi-Fi dongles for legacy embedded systems lacking native Wi-Fi, requiring minimal host driver footprint. IC Role / Device Role / Timing Role: Self-contained Wi-Fi IC with integrated flash and MAC/PHY - eliminates need for external memory or companion MCU. Use Value: SPI host interface reduces pin count vs. SDIO; pre-certified RF design shortens time-to-market and avoids FCC/CE retesting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Wi-Fi Link Controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESP32-WROOM-32 | Lacks AEC-Q100 qualification; uses dual-core Xtensa LX6 CPU; no hardware PTA; relies on software coexistence | Targeted at consumer IoT; not rated for automotive or extended industrial temperature range | Choose when cost sensitivity outweighs industrial reliability requirements and host-side coexistence management is acceptable |
| INFINEON CYW43439 | Supports 2.4/5 GHz dual-band; requires external flash; no integrated crypto accelerator; PTA implemented in firmware | Used in mobile and computing platforms where multi-band flexibility is prioritized over secure boot assurance | Prefer when 5 GHz operation or Linux driver maturity is critical, and hardware root of trust is not mandatory |
Compared with ESP32-WROOM-32 and CYW43439, WILCS02IC-V/ZZX uniquely combines AEC-Q100 Grade 2 operation, hardware-enforced secure boot, and silicon-level PTA arbitration - making it optimal for safety-critical industrial and automotive-adjacent edge devices where firmware integrity and deterministic coexistence are non-negotiable.
Availability
WILCS02IC-V/ZZX is available at Aetrix Electronics and suitable for industrial control systems, smart access devices, and edge gateway designs requiring stable component supply, long-term lifecycle support, and automotive-grade reliability.
Supply support for WILCS02IC-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 Inc. is a U.S.-based semiconductor manufacturer specializing in microcontrollers, analog, FPGA, and wireless solutions, with emphasis on industrial, automotive, and aerospace reliability.
WILCS02IC-V/ZZX belongs to Microchip's WILCS02 family of certified Wi-Fi Link Controllers, designed specifically for resource-constrained embedded systems requiring hardware-accelerated security and robust RF performance in harsh environments.
FAQ
What is the operating temperature range of the WILCS02IC-V/ZZX?
The WILCS02IC-V/ZZX is qualified to AEC-Q100 Grade 2 and operates from –40°C to +105°C. This extended range supports deployment in under-hood automotive modules, industrial motor drives, and outdoor smart infrastructure where ambient temperatures exceed standard commercial limits. The WILCS02IC-V/ZZX achieves this through on-die thermal monitoring and robust power rail regulation across all internal 1.5 V and 3.3 V domains.
Does the WILCS02IC-V/ZZX support both SDIO and SPI host interfaces simultaneously?
No - the WILCS02IC-V/ZZX supports either SDIO or SPI, selected at boot via strapping pins DFU_RX/STRAP1 and DFU_TX/STRAP2. Pulling STRAP1 low configures SDIO mode; pulling it high selects SPI. STRAP2 is reserved for future upgrades and should be pulled high. The WILCS02IC-V/ZZX does not support concurrent or dynamic switching between interfaces - the mode is fixed at power-up and remains static during operation.
Is external flash memory required for the WILCS02IC-V/ZZX?
No - the WILCS02IC-V/ZZX integrates up to 2 MB of stacked flash memory internally, eliminating the need for external flash. This flash stores the Link Controller firmware, cryptographic keys, and configuration data. Firmware updates are performed securely via Device Firmware Update (DFU) over UART or host-assisted side-loading, with hardware-enforced signature verification and rollback protection built into the WILCS02IC-V/ZZX boot ROM.
How does the WILCS02IC-V/ZZX handle Wi-Fi and Bluetooth coexistence?
The WILCS02IC-V/ZZX implements IEEE 802.15.2-compliant three-wire Packet Traffic Arbitration (PTA) in hardware, enabling deterministic, low-latency coordination between Wi-Fi and Bluetooth radios without CPU intervention. Signals PTA_WLAN_ACTIVE, PTA_BT_PRIO, and PTA_BT_ACTIVE allow real-time priority negotiation and transmit gating - reducing interference-induced packet loss in dual-radio systems. This differs from software-based coexistence used in many competing ICs.
What certifications apply to the WILCS02IC-V/ZZX itself?
The WILCS02IC-V/ZZX SoC is AEC-Q100 Grade 2 qualified and RoHS/REACH compliant. Full regulatory certifications (FCC, CE, UKCA, MIC, KCC, NCC, SRRC, ANATEL) apply to the complete WILCS02 module (e.g., WILCS02PE/WILCS02UE), not the bare die. As a component, the WILCS02IC-V/ZZX requires integration into a certified module or end-product layout to meet regional radio compliance - its RF matching network and antenna interface must be validated per final design.
WILCS02IC-V/ZZX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 48-VFQFN Exposed Pad
- Packaging:
- Tray
- 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)
WILCS02IC-V/ZZX FAQ
1.How can I place an order for WILCS02IC-V/ZZX through Aetrix?
Please submit a Request for Quotation (RFQ) for WILCS02IC-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 WILCS02IC-V/ZZX reliable?
The price and inventory of WILCS02IC-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 WILCS02IC-V/ZZX is usually 5 days.
3.What payment methods are accepted for WILCS02IC-V/ZZX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for WILCS02IC-V/ZZX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for WILCS02IC-V/ZZX?
WILCS02IC-V/ZZX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your WILCS02IC-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 WILCS02IC-V/ZZX?
For technical support, including WILCS02IC-V/ZZX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your WILCS02IC-V/ZZX requirements.
6.How does Aetrix verify that WILCS02IC-V/ZZX is sourced from the original manufacturer or authorized distributors?
All WILCS02IC-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 WILCS02IC-V/ZZX meets industry standards.
7.What is the process for return or replacement of WILCS02IC-V/ZZX?
All WILCS02IC-V/ZZX units undergo pre-shipment inspection (PSI). If there is an issue with WILCS02IC-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 WILCS02IC-V/ZZX part is unused and in its original packaging.
Return procedure for WILCS02IC-V/ZZX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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