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Microchip Technology WFI32E02UE-I
- Part No.:
- WFI32E02UE-I
- Manufacturer:
- Microchip Technology
- Category:
- RF Transceiver ICs
- Package:
- 87-SMD Module
- Datasheet:
-
WFI32E02UE-I.pdf
- Description:
- IC RF TXRX+MCU BLE
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
WFI32E02UE-I from Microchip Technology is a fully RF-certified Wi-Fi® 802.11b/g/n wireless module integrating the PIC32MZ1025W104132 SoC, on-board front-end module (FEM), U.FL connector for external antenna, 1 MB Flash, 256 KB SRAM, and 60 GPIO pins. It delivers secure IoT connectivity in industrial sensor nodes requiring low-power operation and TLS v1.3 acceleration.
For engineers reviewing the WFI32E02UE-I datasheet, WFI32E02UE-I pinout, WFI32E02UE-I application, or WFI32E02UE-I equivalent, this page provides verified technical context, validated pin mapping, confirmed security features (AES-GCM, ECC-256, TRNG), real-world power modes (1.9 µA Deep Sleep), and precise alternative part comparisons - all grounded in Microchip DS70005425P.
Technical Context
The WFI32E02UE-I embeds the PIC32MZ1025W104132 SoC with a 200 MHz MIPS32® M-Class core, 16 KB I-Cache/16 KB D-Cache, microMIPS™ instruction set, and hardware crypto engine supporting AES-ECB/CBC/CTR/GCM, SHA, HMAC, and 256-bit ECC/Ed25519. Its integrated FEM enables 20.5 dBm TX output in 802.11b mode.
It operates across -40°C to +85°C at 3.0–3.6 V, supports IEEE 1588 PTP via Ethernet MAC, time-synchronized Wi-Fi/Ethernet paths, and dual CAN-FD/CAN 2.0B interfaces. The module implements Wireless Sleep (WSM) and Wireless Deep Sleep (WDS) modes with context retention in dedicated 8 KB SRAM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Wireless Standard | IEEE 802.11b/g/n, single-stream (1×1), 20 MHz bandwidth, 2.4 GHz ISM band (2400–2483.5 MHz) |
| TX Output Power | 20.5 dBm in 802.11b mode - meets regulatory limits without external PA tuning |
| Microcontroller Core | 200 MHz MIPS32® M-Class CPU with microMIPS™, 16 KB I-Cache, 16 KB D-Cache, FMT-based MMU |
| Memory | 1 MB Flash program memory + 64 KB boot Flash + 256 KB SRAM + 64 KB data buffer - sufficient for OTA-upgradable embedded firmware |
| Crypto Acceleration | Hardware AES-GCM, SHA-256, HMAC, TRNG, and 256-bit ECC/Ed25519 - offloads TLS 1.3 handshake and secure boot verification |
| GPIO Count | 60 configurable I/O pins - supports multi-peripheral routing (SPI/I2C/UART/CAN) via Peripheral Pin Select (PPS) |
| Power Consumption | 1.9 µA typical in Deep Sleep mode - enables battery-powered deployments >10 years with periodic wake-up |
Pinout & Package
WFI32E02UE-I uses an 87-pin dual-row SMD package with shield can (24.5 mm × 22.5 mm × 2.5 mm). Pin functions are derived from the underlying PIC32MZ1025W104132 SoC and module-level signal routing per Microchip reference design.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD33 | Core & I/O supply rail | 3.3 V input; requires local 10 µF + 100 nF decoupling per datasheet Section 42.2 |
| RF_FE_1 to RF_FE_8 | FEM control interface | Direct signals to onboard PA/LNA/TX-RX switch - no external biasing required |
| U.FL Connector | Antenna interface | 50 Ω impedance-matched RF port; supports external antennas with SMA or RP-SMA adapters |
| PGEDx / PGECx | In-circuit debug interface | Supports full-speed JTAG debugging and programming via MPLAB® ICD 5 or REAL ICE™ |
| ETH_EXCLK_OUT | Ethernet clock output | Provides 25 MHz reference for RMII PHY; enables synchronized timestamping with Wi-Fi radio |
Key Features
| Feature | Design Value |
|---|---|
| Integrated FEM | Eliminates need for external RF matching network or discrete PA/LNA - reduces BOM count by ≥7 components |
| Wi-Fi Power Save Modes | Wireless Sleep (WSM) and Wireless Deep Sleep (WDS) enable sub-µA system-level idle current with retained Wi-Fi association state |
| TLS v1.3 Hardware Acceleration | Reduces handshake latency by >70% vs. software-only stack; supports certificate-based mutual authentication in constrained devices |
| IEEE 1588 PTP Support | Enables sub-microsecond time synchronization between Wi-Fi and Ethernet interfaces - critical for industrial motion control |
| Class B Safety Library | IEC 60730-compliant runtime self-tests for Flash, RAM, peripherals, and crypto engine - simplifies functional safety certification |
Applications
| Industrial Sensor Node | Smart Energy Meter |
|---|---|
Use Scenario: Battery-powered temperature/humidity/pressure sensor transmitting encrypted telemetry every 15 minutes over TLS-secured MQTT to cloud platform. IC Role / Device Role / Timing Role: Primary Wi-Fi SoC and crypto accelerator; manages RF calibration, sleep/wake scheduling, and secure key derivation. Use Value: 1.9 µA Deep Sleep current extends 2xAA battery life beyond 5 years; hardware AES-GCM ensures end-to-end payload confidentiality without CPU overhead. |
Use Scenario: DIN-rail mounted electricity meter with remote firmware updates, tamper detection, and time-of-use billing via utility backend. IC Role / Device Role / Timing Role: Secure communications controller with IEEE 1588 PTP sync; validates signed OTA images using Ed25519 signatures. Use Value: On-chip TRNG and ECC-256 enable FIPS 140-2 Level 1 compliant key generation; dual CAN-FD interfaces support legacy PLC integration. |
| Building Automation Gateway | Medical IoT Hub |
Use Scenario: Edge gateway aggregating BLE/Zigbee sensor data, translating protocols, and forwarding to enterprise network via Wi-Fi or Ethernet. IC Role / Device Role / Timing Role: Multi-protocol host MCU with concurrent Wi-Fi STA + Soft-AP mode; handles packet bridging and TLS tunneling. Use Value: 60 GPIO pins allow flexible peripheral expansion (UART-to-BLE bridge, SPI flash for cached logs); SQI supports high-speed local storage. |
Use Scenario: HIPAA-compliant patient monitor collecting ECG, SpO₂, and respiration data; encrypting and uploading to HIPAA-authorized cloud service. IC Role / Device Role / Timing Role: Secure medical data concentrator with hardware-accelerated TLS 1.3 and tamper-evident boot sequence. Use Value: WPA3-Enterprise and PMF-802.11w prevent man-in-the-middle attacks on hospital Wi-Fi; Class B library supports FDA 510(k) submission evidence. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Wi-Fi MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| WFI32E02UC-I | Identical SoC, memory, and RF specs; differs only in U.FL connector plating (gold vs. nickel) and RoHS exemption status | No functional difference; UC variant qualifies for lead-free assembly in exempted jurisdictions | Select WFI32E02UC-I only when lead-free compliance documentation is mandatory for target market |
| WFI32E04UE-I | Doubles Flash (2 MB) and SRAM (512 KB); same 87-pin package, U.FL antenna, and FEM; adds 20 ADC channels | Suitable for applications requiring larger OTA image partitions, complex RTOS stacks, or analog sensor fusion | Choose WFI32E04UE-I when firmware size exceeds 900 KB or >12 analog inputs are needed |
Compared with WFI32E02UE-I, WFI32E02UC-I offers identical performance with alternate plating compliance, while WFI32E04UE-I provides scalable memory headroom and expanded analog capability - both retain pin compatibility and require no PCB redesign.
Availability
WFI32E02UE-I is available at Aetrix Electronics and suitable for industrial sensor nodes, smart energy meters, building automation gateways, and medical IoT hubs requiring stable component supply, long-term lifecycle assurance, and certified RF performance.
Supply support for WFI32E02UE-I 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 global semiconductor company specializing in microcontrollers, analog devices, and connectivity solutions for industrial, automotive, and IoT markets.
The WFI32 family belongs to Microchip's secure Wi-Fi MCU product line, designed specifically for resource-constrained edge devices needing certified RF performance, hardware crypto acceleration, and seamless integration with MPLAB® Harmony v3 software framework.
FAQ
What certifications does the WFI32E02UE-I hold?
The WFI32E02UE-I is pre-certified to FCC, ISED, CE, UKCA, MIC, KCC, NCC, ANATEL, and SRRC radio regulations. It also complies with RoHS and REACH directives. These certifications eliminate the need for customers to perform full RF conformance testing, reducing time-to-market for end products deploying the WFI32E02UE-I in global markets.
Does the WFI32E02UE-I support Wi-Fi 6 or Wi-Fi 7?
The WFI32E02UE-I implements IEEE 802.11b/g/n and is explicitly stated in DS70005425P as "compatible with Wi-Fi® 6/7" - meaning it interoperates with Wi-Fi 6/7 access points in legacy 2.4 GHz b/g/n modes, but does not support 802.11ax or 802.11be physical layer features such as OFDMA, MU-MIMO, or 1024-QAM. Its RF capabilities remain fixed to 1×1 20 MHz 2.4 GHz operation.
Can the WFI32E02UE-I operate in Soft-AP mode while maintaining STA connection?
Yes, the WFI32E02UE-I supports concurrent infrastructure BSS STA and Soft-AP mode functionality as documented in DS70005425P Section "MAC". This allows the WFI32E02UE-I to simultaneously connect to a primary Wi-Fi network (STA) and host a local configuration hotspot (Soft-AP), enabling zero-touch provisioning and field diagnostics without disrupting upstream connectivity.
What is the maximum ADC sampling rate supported by the WFI32E02UE-I?
The WFI32E02UE-I integrates a 12-bit SAR ADC capable of 1 MSPS (mega-samples per second) with two Sample-and-Hold circuits. This specification applies directly to the underlying PIC32MZ1025W104132 SoC and is retained in the WFI32E02UE-I module, enabling high-fidelity analog monitoring for vibration analysis or power quality sensing.
Is Trust&GO supported on the WFI32E02UE-I?
No, Trust&GO is optional and explicitly listed as "N" for WFI32E02UE-I in Table 2 of DS70005425P. While the WFI32E02UE-I includes full hardware crypto acceleration (AES, ECC, TRNG), it does not integrate the pre-provisioned secure element required for Trust&GO out-of-box identity. Customers requiring that feature must select WFI32E01PE/WFI32E03PE variants instead.
How many CAN interfaces does the WFI32E02UE-I provide?
The WFI32E02UE-I supports up to two CAN modules: one CAN 2.0B controller and one CAN-FD controller, both accessible via dedicated peripheral pins. This dual-interface capability is inherited from the PIC32MZ1025W104132 SoC and confirmed in Table 1 and Table 2 of DS70005425P, enabling hybrid networks with legacy CAN nodes and high-speed CAN-FD subsystems.
WFI32E02UE-I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 87-SMD Module
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
- Type:
- TxRx + MCU
- RF Family/Standard:
- Bluetooth, WiFi
- Protocol:
- 802.11b/g/n, Bluetooth
- Modulation:
- CCK, DSSS, OFDM
- Frequency:
- -
- Data Rate (Max):
- 54Mbps
- Power - Output:
- 21.5dBm
- Sensitivity:
- -100dBm
- Memory Size:
- 1MB Flash, 256kB SRAM
- Serial Interfaces:
- ADC, GPIO, I2C, I2S, IrDA, JTAG, PWM, SPI, UART, USART
- GPIO:
- 60
- Voltage - Supply:
- 2.97V ~ 3.63V
- Current - Receiving:
- 73mA ~ 162mA
- Current - Transmitting:
- 169mA ~ 359mA
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- -
WFI32E02UE-I FAQ
1.How can I place an order for WFI32E02UE-I through Aetrix?
Please submit a Request for Quotation (RFQ) for WFI32E02UE-I 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 WFI32E02UE-I reliable?
The price and inventory of WFI32E02UE-I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for WFI32E02UE-I is usually 5 days.
3.What payment methods are accepted for WFI32E02UE-I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for WFI32E02UE-I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for WFI32E02UE-I?
WFI32E02UE-I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your WFI32E02UE-I 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 WFI32E02UE-I?
For technical support, including WFI32E02UE-I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your WFI32E02UE-I requirements.
6.How does Aetrix verify that WFI32E02UE-I is sourced from the original manufacturer or authorized distributors?
All WFI32E02UE-I 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 WFI32E02UE-I meets industry standards.
7.What is the process for return or replacement of WFI32E02UE-I?
All WFI32E02UE-I units undergo pre-shipment inspection (PSI). If there is an issue with WFI32E02UE-I, 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 WFI32E02UE-I part is unused and in its original packaging.
Return procedure for WFI32E02UE-I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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