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Microchip Technology ATWINC1500B-MU-Y
- Part No.:
- ATWINC1500B-MU-Y
- Manufacturer:
- Microchip Technology
- Category:
- RF Transceiver ICs
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
ATWINC1500B-MU-Y.pdf
- Description:
- IC RF TXRX+MCU WIFI 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:307
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Product details
Overview
ATWINC1500B-MU-Y from Microchip Technology is a fully integrated IEEE 802.11b/g/n Wi-Fi SoC with on-chip 4 Mb Flash, 32-bit Cortus APS3 processor, and hardware-accelerated TLS/SHA-256 security. It delivers up to 72 Mbps PHY rate in 2.4 GHz ISM band, supports Soft-AP mode, and operates from -40°C to +85°C with I/O voltage range 2.7–3.6 V. It interfaces via SPI to host MCUs in battery-powered IoT sensor nodes.
For engineers reviewing the ATWINC1500B-MU-Y datasheet, ATWINC1500B-MU-Y pinout, ATWINC1500B-MU-Y application, or ATWINC1500B-MU-Y equivalent, key selection criteria include its 40-pin QFN (5×5 mm) package, <4 µA power-down current, integrated PA/LNA/switch, and firmware-upgradable OTA stack supporting TCP/UDP/DHCP/TLS/DNS.
Technical Context
The ATWINC1500B-MU-Y implements a dual-domain architecture: a dedicated WLAN MAC/PHY subsystem with hardware accelerators for A-MSDU/A-MPDU aggregation, block ACK, and IP checksum, plus a programmable Cortus APS3 core running a full offload network stack. Its RF front-end integrates PA, LNA, and T/R switch, eliminating external RF components.
Power management includes three low-power states: <4 µA Power-Down (chip disabled), 380 µA Doze (beacon monitoring with settings preserved), and fast wake-up via GPIO or SPI transaction. Clocking relies on a single 26 MHz crystal (XO_P/XO_N), with optional 32 kHz RTC clock input on GPIO1/RTC_CLK.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Wi-Fi Standard | IEEE 802.11b/g/n, 20 MHz channel, 1×1 MIMO in 2.4 GHz ISM band |
| PHY Data Rate | Up to 72 Mbps - enables high-throughput sensor telemetry without external baseband IC |
| Flash Memory | 4 Mb on-chip - stores full Wi-Fi firmware, TLS stack, and application binaries; no external Flash required |
| Host Interface | SPI slave only - minimal pin count, deterministic timing, compatible with most MCUs; UART for debug only |
| Operating Temp | -40°C to +85°C - qualified for industrial and outdoor edge-node deployment |
| Power-Down Current | <4 µA at 3.3 V - extends battery life in intermittently active sensor nodes |
| I/O Voltage | 2.7–3.6 V - matches common 3.3 V logic domains without level-shifting |
Pinout & Package
The ATWINC1500B-MU-Y is housed in a 40-pin QFN package (5 mm × 5 mm, 0.4 mm pitch) with exposed thermal paddle (PADDLE VSS) requiring connection to PCB ground.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CHIP_EN | Module enable control | Active-high signal; drives module into <4 µA Power-Down when low - used for coarse power gating |
| GPIO2/IRQN | Interrupt output | Open-drain active-low interrupt to host MCU - signals packet arrival, connection events, or error conditions |
| SPI_SSN, SPI_SCK, SPI_TXD, SPI_RXD | SPI interface | Standard 4-wire SPI slave interface - enables reliable, low-overhead host communication at up to 20 MHz |
| XO_P / XO_N | Crytal oscillator terminals | Accepts 26 MHz fundamental-mode crystal with ≤150 Ω ESR - no external load caps needed due to 5 pF internal capacitance |
| RESETN | Hard reset input | Active-low asynchronous reset - ensures deterministic recovery after brown-out or firmware hang |
Key Features
| Feature | Design Value |
|---|---|
| On-chip network stack | Hardware-accelerated TCP/UDP/DHCP/ARP/HTTP/TLS/DNS - eliminates host MCU resource burden in constrained devices |
| Hardware security acceleration | Dedicated engines for TLS handshake, SHA-256, AES-CCMP - reduces connection time by >50% vs software-only implementation |
| Integrated RF front-end | PA, LNA, and T/R switch co-packaged - achieves -92 dBm sensitivity and +17 dBm output power with zero external RF components |
| Firmware OTA upgrade | Secure, signed, delta-based updates over Wi-Fi - enables field-deployed security patches and feature enhancements |
| Soft-AP capability | Simultaneous STA+AP operation supported - allows local provisioning via smartphone without cloud dependency |
Applications
| Smart Home Sensor Hub | Industrial Wireless Gateway |
|---|---|
Use Scenario: Battery-powered temperature/humidity/motion sensor node transmitting data every 5 minutes to a local hub. IC Role / Device Role / Timing Role: Wi-Fi SoC providing secure, low-power 802.11n connectivity and TLS-encrypted MQTT transport. Use Value: <4 µA Power-Down current enables 5+ year CR2032 battery life; integrated flash avoids BOM cost of external memory. | Use Scenario: DIN-rail mounted gateway collecting Modbus RTU data from PLCs and forwarding via TLS-secured HTTP to cloud platform. IC Role / Device Role / Timing Role: Offload network processing from host ARM Cortex-M7 MCU using hardware-accelerated TCP/TLS stack. Use Value: Reduces host CPU load by ~70%; enables concurrent STA (to cloud) and Soft-AP (for local commissioning) modes. |
| Medical Wearable Monitor | Asset Tracking Beacon |
Use Scenario: Chest-worn ECG patch transmitting encrypted waveform snippets to nurse station Wi-Fi during clinical rounds. IC Role / Device Role / Timing Role: Low-latency, secure Wi-Fi transceiver with fast AP re-association (150 ms) for seamless roaming between hospital APs. Use Value: Hardware-accelerated AES-CCMP ensures HIPAA-compliant encryption without impacting real-time sampling. | Use Scenario: GPS-enabled logistics tag reporting location every 6 hours via Wi-Fi when within facility coverage zones. IC Role / Device Role / Timing Role: Ultra-low-power Wi-Fi controller using Doze mode (380 µA) for beacon listening and burst transmission. Use Value: Enables multi-year operation on single-cell Li-SOCl₂ battery; integrated PA provides robust indoor link budget. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Wi-Fi SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESP32-WROOM-32 | Integrated dual-core Xtensa LX6 MCU, 4 MB PSRAM, Bluetooth 4.2 - higher host compute but larger footprint (18×25.5 mm) | Requires full embedded OS (FreeRTOS); less suitable for ultra-low-power intermittent wake-up than ATWINC1500B-MU-Y's hardware-managed Doze mode | Choose ESP32-WROOM-32 when local AI inference or BLE coexistence is required; ATWINC1500B-MU-Y excels in pure Wi-Fi offload with minimal power budget. |
| RTL8720DN | ARM Cortex-M23 core, 2 MB Flash, 384 KB SRAM - supports 802.11n + Bluetooth 5.0, but lacks certified WPA3 and hardware TLS acceleration | Lower security certification maturity; requires host-side TLS stack for enterprise authentication (EAP-TLS) | Choose RTL8720DN for cost-sensitive consumer products where WPA2 suffices; ATWINC1500B-MU-Y is preferred for medical/industrial deployments needing FIPS-aligned crypto acceleration. |
Compared with ESP32-WROOM-32 and RTL8720DN, the ATWINC1500B-MU-Y delivers superior power efficiency in sleep states, certified WPA2/WPA3 enterprise security, and a mature, production-ready offload stack - making it optimal for battery-constrained, security-critical, and certification-driven designs.
Availability
ATWINC1500B-MU-Y is available at Aetrix Electronics and suitable for smart home sensor hubs, industrial wireless gateways, and medical wearable monitors requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for ATWINC1500B-MU-Y 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 company specializing in microcontrollers, analog, FPGA, and connectivity solutions with ISO 9001-certified manufacturing.
The ATWINC15x0B product line was designed specifically for ultra-low-power, host-offload Wi-Fi connectivity in battery-operated IoT endpoints - prioritizing integrated RF, hardware security acceleration, and minimal external component count.
FAQ
What is the primary function of the ATWINC1500B-MU-Y in an embedded system?
The ATWINC1500B-MU-Y serves as a complete Wi-Fi network controller SoC that offloads all 802.11b/g/n MAC/PHY processing, TCP/IP stack, TLS encryption, and application-layer protocols (HTTP/DNS) from the host MCU. In systems using ATWINC1500B-MU-Y, the host communicates exclusively via SPI, enabling resource-constrained microcontrollers to add robust, secure Wi-Fi without software stack porting or runtime overhead.
Does the ATWINC1500B-MU-Y require an external crystal oscillator?
Yes, the ATWINC1500B-MU-Y requires a 26 MHz fundamental-mode crystal connected to XO_P and XO_N pins. The device includes 5 pF internal load capacitance per terminal, so external load capacitors are not needed unless board parasitics exceed specification. An external 26 MHz clock source can also be AC-coupled to XO_N if crystal-free operation is required.
How does the ATWINC1500B-MU-Y manage power in battery-powered applications?
The ATWINC1500B-MU-Y offers three key low-power states: Power-Down (<4 µA at 3.3 V), Doze (380 µA with settings preserved for beacon monitoring), and Sleep (using on-chip 32 kHz oscillator). Host control via CHIP_EN and RESETN enables precise power gating. Fast wake-up from Doze mode (<100 µs) via GPIO or SPI transaction minimizes active time, directly extending battery life in intermittent-use applications like ATWINC1500B-MU-Y-based sensor nodes.
Can the ATWINC1500B-MU-Y operate as both a Wi-Fi client and access point simultaneously?
Yes, the ATWINC1500B-MU-Y supports concurrent Station (STA) and Soft-AP modes - a capability confirmed in firmware releases 19.6.1 and later. This allows devices using ATWINC1500B-MU-Y to connect to an upstream Wi-Fi network while hosting a local provisioning AP for smartphone configuration, enabling zero-touch setup without cloud dependency or secondary radios.
What security protocols are natively supported by the ATWINC1500B-MU-Y firmware?
The ATWINC1500B-MU-Y firmware natively supports WEP, WPA/WPA2-PSK, and enterprise-grade WPA/WPA2 (802.11x) with EAP-TLS, EAP-PEAPv0/1 (TLS/MSCHAPv2), and EAP-TTLSv0 (MSCHAPv2) - all accelerated by on-chip cryptographic engines. These protocols are enabled in firmware version 19.6.1 and above, and ATWINC1500B-MU-Y's hardware TLS engine ensures sub-second handshake times even on low-power hosts.
ATWINC1500B-MU-Y Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 40-VFQFN Exposed Pad
- Packaging:
- Tray
- 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-Y FAQ
1.How can I place an order for ATWINC1500B-MU-Y through Aetrix?
Please submit a Request for Quotation (RFQ) for ATWINC1500B-MU-Y 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-Y reliable?
The price and inventory of ATWINC1500B-MU-Y 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-Y is usually 5 days.
3.What payment methods are accepted for ATWINC1500B-MU-Y?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATWINC1500B-MU-Y transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATWINC1500B-MU-Y?
ATWINC1500B-MU-Y orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATWINC1500B-MU-Y 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-Y?
For technical support, including ATWINC1500B-MU-Y datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATWINC1500B-MU-Y requirements.
6.How does Aetrix verify that ATWINC1500B-MU-Y is sourced from the original manufacturer or authorized distributors?
All ATWINC1500B-MU-Y 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-Y meets industry standards.
7.What is the process for return or replacement of ATWINC1500B-MU-Y?
All ATWINC1500B-MU-Y units undergo pre-shipment inspection (PSI). If there is an issue with ATWINC1500B-MU-Y, 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-Y part is unused and in its original packaging.
Return procedure for ATWINC1500B-MU-Y:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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