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Microchip Technology ATWINC1500B-MU-T
- Part No.:
- ATWINC1500B-MU-T
- Manufacturer:
- Microchip Technology
- Category:
- RF Transceiver ICs
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
ATWINC1500B-MU-T.pdf
- Description:
- IC RF TXRX+MCU WIFI 40QFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
ATWINC1500B-MU-T from Microchip Technology is a fully integrated IEEE 802.11 b/g/n Wi-Fi® network controller SoC with on-chip 4 Mb Flash, 26 MHz crystal oscillator interface, and QFN-40 package. It delivers up to 72 Mbps PHY rate in 2.4 GHz ISM band, supports SPI host interface, and operates across -40°C to +85°C. Used in battery-powered IoT edge nodes for secure wireless connectivity to cloud gateways.
For engineers reviewing the ATWINC1500B-MU-T datasheet, ATWINC1500B-MU-T pinout, ATWINC1500B-MU-T application, or ATWINC1500B-MU-T equivalent, key selection criteria include integrated PA/LNA/switch, hardware-accelerated TLS and IP checksum, <4 µA power-down current, and MAC-level A-MSDU/A-MPDU aggregation support.
Technical Context
The ATWINC1500B-MU-T integrates a Cortus APS3 32-bit RISC processor running firmware that offloads TCP/UDP/DHCP/ARP/HTTP/TLS/DNS stack processing from the host MCU. Its WLAN subsystem implements IEEE 802.11n MAC with hardware-accelerated two-level frame aggregation and block acknowledgment, plus PHY with advanced equalization, channel estimation, and carrier/timing synchronization.
Power architecture includes dual-stage PA supplies (VDD_BATT_PPA and VDD_VBATT_PA), integrated DC/DC converter (VBATT_BUCK → VSW → VREG_BUCK), and low-power 32 kHz oscillator. Host interface is SPI-only (SPI_SSN/SPI_SCK/SPI_TXD/SPI_RXD), with GPIO2/IRQN providing interrupt signaling and CHIP_EN enabling full power-down control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Wi-Fi Standard | IEEE 802.11 b/g/n, 20 MHz bandwidth, 1x1 MIMO in 2.4 GHz ISM band - enables cost-effective single-antenna designs with legacy compatibility. |
| PHY Data Rate | Up to 72 Mbps - maximum physical layer throughput achievable under ideal RF conditions with 20 MHz channel. |
| On-Chip Memory | 4 Mb Flash + 128 KB instruction ROM + 160 KB instruction RAM + 64 KB data RAM - stores full Wi-Fi stack and application firmware without external memory. |
| Power Consumption | <4 µA in Power-Down mode at 3.3V I/O - enables multi-year battery life in always-on sensor nodes with periodic wake-up. |
| Host Interface | SPI slave only (4-wire), 26 MHz crystal required - eliminates need for external clock generator or UART/I²C routing complexity. |
| Operating Voltage | VDDIO: 2.7–3.6 V; VBAT: 3.0–4.2 V - compatible with common Li-ion/Li-Po and 3.3 V logic rails without level-shifting. |
| Temperature Range | -40°C to +85°C - qualified for industrial and outdoor embedded deployments with full RF performance validation. |
Pinout & Package
ATWINC1500B-MU-T is housed in a 5 mm × 5 mm, 0.4 mm pitch, 40-pin QFN package with exposed thermal paddle (PADDLE VSS) requiring connection to system ground. Package thickness is 0.85 mm ±0.15/-0.05 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CHIP_EN | Module enable input | Active-high signal controlling full chip power state; drives device into <4 µA Power-Down when low - critical for ultra-low-power scheduling. |
| GPIO2/IRQN | Interrupt output / GPIO | Open-drain active-low interrupt to host MCU indicating event completion (e.g., packet received, connection established) - enables event-driven host polling. |
| SPI_SSN, SPI_SCK, SPI_TXD, SPI_RXD | SPI slave interface | Standard 4-wire SPI signals supporting up to 20 MHz clock - provides deterministic, low-overhead host communication without DMA dependency. |
| XO_P / XO_N | Crytal oscillator terminals | Differential 26 MHz crystal interface with 5 pF internal load capacitance - requires external 26 MHz crystal and onboard load caps per layout guidelines. |
| VDDIO / VDDC / VBATT_BUCK / VREG_BUCK | Power supply inputs | Separate I/O (2.7–3.6 V), core digital (1.2 V derived), battery input (3.0–4.2 V), and regulated core output (1.2 V) - enables flexible power architecture with integrated DC/DC. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated RF front-end | On-die PA, LNA, T/R switch, and PMU eliminate 12+ external RF components - reduces BOM cost and PCB area by >30% vs discrete solutions. |
| Hardware TLS acceleration | Dedicated crypto engine for AES-CCM, SHA-256, and RSA key exchange - cuts HTTPS handshake time by ~65% versus software-only TLS on host MCU. |
| A-MSDU/A-MPDU aggregation | Two-level hardware-accelerated frame aggregation with Block ACK - increases effective TCP throughput by 2.3× in noisy 2.4 GHz environments. |
| On-chip network stack | Firmware-implemented TCP/UDP/DHCP/ARP/HTTP/TLS/DNS - removes requirement for host MCU to run full TCP/IP stack, freeing >80 KB RAM and CPU cycles. |
| OTA firmware upgrade | Secure, signed over-the-air update capability with rollback protection - enables field-deployed security patching and feature updates without physical access. |
Applications
| Smart Home Sensor Node | Industrial Wireless Gateway |
|---|---|
|
Use Scenario: Battery-powered temperature/humidity/motion sensor transmitting encrypted telemetry every 5 minutes to a local hub. IC Role / Device Role / Timing Role: Wi-Fi network controller handling MAC/PHY, TLS encryption, and DHCP negotiation autonomously. Use Value: <4 µA Power-Down current extends CR2032 battery life beyond 3 years; integrated PA ensures reliable 30 m indoor range without external amplification. |
Use Scenario: DIN-rail mounted gateway aggregating Modbus RTU data from 16 PLCs and forwarding via TLS-secured MQTT to cloud platform. IC Role / Device Role / Timing Role: Offload network stack and TLS processing from ARM Cortex-M7 host MCU to reduce host CPU load by 40%. Use Value: Hardware-accelerated IP checksum and TLS avoids host-side software bottlenecks; SPI interface allows deterministic 20 Mbps host-to-Wi-Fi throughput. |
| Medical Wearable Monitor | Asset Tracking Beacon |
|
Use Scenario: ECG patch collecting biometric data and uploading encrypted reports to HIPAA-compliant server during nightly charging window. IC Role / Device Role / Timing Role: Secure Wi-Fi endpoint enforcing WPA2-Enterprise (EAP-TLS) authentication and certificate-based identity binding. Use Value: On-chip eFuse stores unique MAC and calibrated RF parameters; hardware crypto engine meets FIPS 140-2 Level 1 requirements for medical data integrity. |
Use Scenario: GPS-enabled logistics tag reporting location every 6 hours via Wi-Fi when within coverage of known access points (e.g., warehouses, depots). IC Role / Device Role / Timing Role: Low-power STA-mode client performing fast AP re-association (150 ms) and beacon monitoring in Doze mode (380 µA). Use Value: Fast re-association minimizes connection latency during intermittent coverage; Doze mode enables multi-month operation on 1,000 mAh Li-SOCl₂ cell. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Wi-Fi network controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESP32-WROOM-32 | Integrated dual-core Xtensa LX6 MCU, 4 MB Flash, Bluetooth 4.2 coexistence; requires external 40 MHz crystal; no hardware TLS accelerator. | Higher host compute autonomy but larger footprint (18 mm × 25.5 mm); lacks certified WPA2-Enterprise EAP-TLS firmware stack out-of-box. | Select when needing embedded application code execution or BLE/Wi-Fi dual-mode; avoid if strict power budget or enterprise security certification is mandatory. |
| RTL8720DN | ARM Cortex-M23 core, 2 MB Flash, hardware crypto (AES/SHA/RSA), supports 802.11 b/g/n + BLE 5.0; requires external 40 MHz crystal and PA/LNA. | Lower BOM cost than ATWINC1500B-MU-T but adds 8+ external RF components; no integrated DC/DC converter - needs external regulator. | Select for cost-sensitive consumer devices where RF design resources exist; avoid for space-constrained or battery-life-critical industrial designs. |
Compared with ESP32-WROOM-32 and RTL8720DN, the ATWINC1500B-MU-T delivers superior RF integration (PA/LNA/switch), lower standby current (<4 µA vs ≥10 µA), and production-ready WPA2-Enterprise firmware - making it optimal for certified, long-life, space-constrained IoT endpoints.
Availability
ATWINC1500B-MU-T is available at Aetrix Electronics and suitable for smart home sensors, industrial gateways, medical wearables, and asset trackers requiring stable component supply with full lifecycle support.
Supply support for ATWINC1500B-MU-T 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 company specializing in microcontrollers, analog, FPGA, and connectivity solutions with emphasis on reliability and long-term product availability.
The ATWINC1500B-MU-T belongs to Microchip's WINC family of Wi-Fi network controllers designed specifically for ultra-low-power, secure, and easy-to-integrate wireless connectivity in resource-constrained embedded systems.
FAQ
What is the flash memory capacity of the ATWINC1500B-MU-T?
The ATWINC1500B-MU-T contains 4 Mb of on-chip Flash memory, dedicated to storing the Wi-Fi firmware, network stack, and user application binaries. This capacity is fixed for the ATWINC1500B variant and differs from the 8 Mb Flash in the ATWINC1510B. The ATWINC1500B-MU-T uses this Flash to enable complete OTA firmware updates without external memory.
Does the ATWINC1500B-MU-T support WPA2-Enterprise security protocols?
Yes, the ATWINC1500B-MU-T supports WPA2-Enterprise security starting with firmware release 19.6.1, including EAP-TLS, EAP-PEAPv0/1 with TLS, EAP-TTLSv0 with MSCHAPv2, and EAP-PEAPv0/1 with MSCHAPv2. These protocols rely on the on-chip hardware crypto accelerator for TLS handshake acceleration, and the ATWINC1500B-MU-T validates certificates using its integrated trust anchor store.
What is the minimum external clock requirement for the ATWINC1500B-MU-T?
The ATWINC1500B-MU-T requires a 26 MHz fundamental-mode crystal oscillator connected to XO_P and XO_N pins. The crystal must have an equivalent series resistance (ESR) ≤150 Ω and initial frequency tolerance of ±100 ppm. Internal 5 pF load capacitance per terminal must be accounted for when selecting external load capacitors - typical values are 12–18 pF depending on board parasitics.
How does the ATWINC1500B-MU-T achieve ultra-low power consumption in sleep modes?
The ATWINC1500B-MU-T achieves <4 µA Power-Down current by disabling all internal circuits except CHIP_EN detection logic, and 380 µA Doze mode by preserving register state while powering down RF and digital cores - enabled via SPI command. Both modes use the on-chip low-power sleep oscillator, and the ATWINC1500B-MU-T supports fast wake-up (<100 µs) via GPIO2/IRQN or SPI transaction to resume operation.
Is the ATWINC1500B-MU-T pin-compatible with other members of the ATWINC15x0B family?
Yes, the ATWINC1500B-MU-T shares identical 40-pin QFN-5×5 mm package, pinout, and electrical interface with ATWINC1510B-MU-T and all ATWINC15x0B-MU variants. Differences are limited to internal Flash size (4 Mb vs 8 Mb) and factory-programmed eFuse contents (e.g., MAC address presence in -T042 variants). No PCB redesign is needed when migrating between these variants.
ATWINC1500B-MU-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 40-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- TxRx + MCU
- RF Family/Standard:
- WiFi
- Protocol:
- 802.11b/g/n
- Modulation:
- CCK, DSSS, OFDM
- Frequency:
- 2.4GHz
- Data Rate (Max):
- 72.2Mbps
- Power - Output:
- 20.5dBm
- Sensitivity:
- -98dBm
- Memory Size:
- 4MB Flash, 128kB ROM, 224kB RAM
- Serial Interfaces:
- I2C, SDIO, SPI, UART
- GPIO:
- 9
- Voltage - Supply:
- 2.7V ~ 3.6V
- Current - Receiving:
- 22mA ~ 58.5mA
- Current - Transmitting:
- 22mA ~ 294mA
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 40-QFN (5x5)
ATWINC1500B-MU-T FAQ
1.How can I place an order for ATWINC1500B-MU-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ATWINC1500B-MU-T 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 ATWINC1500B-MU-T reliable?
The price and inventory of ATWINC1500B-MU-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATWINC1500B-MU-T is usually 5 days.
3.What payment methods are accepted for ATWINC1500B-MU-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATWINC1500B-MU-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATWINC1500B-MU-T?
ATWINC1500B-MU-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATWINC1500B-MU-T 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 ATWINC1500B-MU-T?
For technical support, including ATWINC1500B-MU-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATWINC1500B-MU-T requirements.
6.How does Aetrix verify that ATWINC1500B-MU-T is sourced from the original manufacturer or authorized distributors?
All ATWINC1500B-MU-T 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 ATWINC1500B-MU-T meets industry standards.
7.What is the process for return or replacement of ATWINC1500B-MU-T?
All ATWINC1500B-MU-T units undergo pre-shipment inspection (PSI). If there is an issue with ATWINC1500B-MU-T, 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 ATWINC1500B-MU-T part is unused and in its original packaging.
Return procedure for ATWINC1500B-MU-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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