Microchip Technology WINCS02ICT-V/ZZX

Overview

WINCS02ICT-V/ZZX from Microchip Technology is a 2.4 GHz IEEE 802.11b/g/n-compliant Wi-Fi® network controller IC with integrated HPA, LNA, RF switches, hardware security accelerator, and 2 MB stacked Flash. It operates at 3.3 V (3.0–3.6 V range), supports -40°C to +105°C industrial temperature range, and executes Microchip's Wi-Fi and TCP/IP stack via SPI interface. It enables secure, low-power wireless connectivity in resource-constrained embedded systems.

For engineers reviewing the WINCS02ICT-V/ZZX datasheet, WINCS02ICT-V/ZZX pinout, WINCS02ICT-V/ZZX application, or WINCS02ICT-V/ZZX equivalent, key selection criteria include its AEC-Q100 Grade 2 qualification, hardware-accelerated WPA3/PMF support, Extreme Deep Sleep (XDS) mode, on-chip TLS 1.2 and MQTT offload, and SPI-based host interface requiring precise 1.5 V and 3.3 V rail sequencing.

Technical Context

The WINCS02ICT-V/ZZX integrates a full WLAN MAC/PHY, baseband processor, and crypto engine supporting AES-128/192/256, SHA-1/SHA-2, ECC up to 521-bit, and RSA-2048. Its hardware PTA interface implements IEEE 802.15.2-compliant three-wire arbitration for Wi-Fi/Bluetooth® coexistence without host intervention.

It features immutable secure boot with hardware root of trust, on-chip Flash for firmware storage, and dedicated power domains (VDD, VDDIO, AVDD, multiple 1.5 V supplies) managed by an integrated PMU. The device requires external 40 MHz crystal and optional 32.768 kHz RTCC oscillator - though current firmware does not utilize RTCC.

Key Specifications

Pinout & Package

WINCS02ICT-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 paddle (Pin 49 = GND). All power domains are segregated: VDD/VDDIO (3.3 V), AVDD (3.3 V), and seven dedicated 1.5 V supply pins for RF/analog/baseband/SPI subsystems.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Wi-Fi network controller applications.

Compared with ESP32-WROOM-32 and ATWILC3000-MR210PB, WINCS02ICT-V/ZZX delivers certified industrial reliability, hardware-enforced security, and true offload of networking stack - reducing host resource demand while meeting automotive-grade robustness requirements without external components.

Availability

WINCS02ICT-V/ZZX is available at Aetrix Electronics and suitable for smart factory sensor nodes, industrial CCTV gateways, smart lock access controllers, and Wi-Fi dongles requiring stable component supply across extended temperature and regulatory-compliant production cycles.

Supply support for WINCS02ICT-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 leading provider of microcontrollers, analog components, and connectivity solutions, serving automotive, industrial, and IoT markets with vertically integrated silicon and software.

WINCS02ICT-V/ZZX belongs to Microchip's WINCS02 family of certified Wi-Fi network controllers designed specifically for secure, low-power, and AEC-Q100-compliant embedded wireless applications - eliminating the need for external Flash, security elements, or RF front-end components.

FAQ

What is the primary function of WINCS02ICT-V/ZZX in a system architecture?

WINCS02ICT-V/ZZX serves as a standalone Wi-Fi network controller IC that offloads the entire 802.11b/g/n MAC/PHY, TCP/IP stack, TLS 1.2, and MQTT protocol processing from the host MCU. It connects exclusively via SPI and requires no external Flash or RAM - all firmware and network services execute from its integrated 2 MB stacked Flash. This enables minimal host resource usage in space- and power-constrained designs.

Does WINCS02ICT-V/ZZX support Wi-Fi 6 or Wi-Fi 7 functionality?

WINCS02ICT-V/ZZX does not implement Wi-Fi 6 (802.11ax) or Wi-Fi 7 (802.11be) physical layer features. However, its 2.4 GHz 802.11b/g/n radio is interoperable with Wi-Fi 6/7 access points operating in the 2.4 GHz band - meaning it can associate and communicate with those APs using legacy 802.11n rates and protocols, not high-efficiency (HE) or multi-link operation (MLO) features.

What are the critical power supply requirements for WINCS02ICT-V/ZZX?

WINCS02ICT-V/ZZX requires three distinct voltage domains: (1) VDD/VDDIO/VDD33 at 3.0–3.6 V (3.3 V typical), each with individual 0.1 µF + 4.7 µF decoupling; (2) seven dedicated 1.5 V supplies for RF/analog/baseband/SPI subsystems - some sourced from internal PMU outputs (e.g., PMU_MLDO_OUT, PMU_BK_LX); (3) AVDD at 3.3 V for analog block. External 1.5 V supplies must not be connected - all 1.5 V rails derive from on-chip regulators.

Can WINCS02ICT-V/ZZX operate without an external 40 MHz crystal?

No. WINCS02ICT-V/ZZX requires an external 40 MHz fundamental-mode crystal connected to XTL_IN (Pin 18) and XTL_OUT (Pin 19) for RF clock generation and system timing. The crystal must meet specified load capacitance (12 pF) and stability (±20 ppm) requirements. No internal oscillator substitutes for this function - operation without the crystal is not possible.

Is the RTCC oscillator (32.768 kHz) mandatory for WINCS02ICT-V/ZZX operation?

No. The RTCC oscillator is optional and currently unused by firmware - Pins 39 (RTCC_OSC_OUT) and 40 (RTCC_OSC_IN/PTA_BT_ACTIVE) may be left unpopulated. However, Microchip recommends including footprint and pull-up/pull-down options for future firmware releases that may enable RTCC-based low-power timing or enhanced PTA arbitration. Its absence has no impact on current Wi-Fi or security functionality.