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Microchip Technology ATWINC1500B-MU-Y042
- Part No.:
- ATWINC1500B-MU-Y042
- Manufacturer:
- Microchip Technology
- Category:
- RF Transceiver ICs
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
ATWINC1500B-MU-Y042.pdf
- Description:
- IC RF TXRX+MCU WIFI 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:953
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Product details
Overview
ATWINC1500B-MU-Y042 from Microchip Technology is a fully integrated IEEE 802.11b/g/n Wi-Fi SoC with on-chip 32-bit Cortus APS3 processor, 4 Mb Flash, and hardware-accelerated TCP/IP stack. It delivers up to 72 Mbps PHY rate in 2.4 GHz ISM band, supports Soft-AP mode, WPA2 security, and operates from -40°C to +85°C with I/O voltage 2.7–3.6 V. It interfaces via SPI to host MCUs in battery-powered IoT sensor nodes.
For engineers reviewing the ATWINC1500B-MU-Y042 datasheet, ATWINC1500B-MU-Y042 pinout, ATWINC1500B-MU-Y042 application, or ATWINC1500B-MU-Y042 equivalent, key selection considerations include its 40-pin QFN (5×5 mm) package, MAC ID pre-programmed, <4 µA power-down current, integrated PA/LNA/switch, and SPI-only host interface without UART/I²C functional use in production firmware.
Technical Context
The ATWINC1500B-MU-Y042 implements a dedicated WLAN MAC with hardware-accelerated A-MSDU/A-MPDU aggregation and block acknowledgment, alongside a programmable Cortus APS3 core handling association, security key management, and TLS offload. Its PHY employs advanced equalization, channel estimation, and carrier/timing synchronization for robust 20 MHz 1×1 MIMO operation.
Power architecture integrates a DC/DC buck converter (VBAT 3.0–4.2 V input), low-power 32 kHz ring oscillator, and five distinct sleep modes-including Doze mode (380 µA) with beacon monitoring and <4 µA Power Down-enabled via CHIP_EN and RESETN control pins. All RF and analog supplies (VDD_RF_TX, VDD_AMS, VDD_SXDIG, etc.) are separately decoupled per datasheet layout guidelines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Wi-Fi Standard | IEEE 802.11b/g/n, 2.4 GHz ISM band only, 20 MHz channel bandwidth |
| PHY Data Rate | Up to 72 Mbps (1×1 SISO, MCS7 @ 20 MHz) |
| Memory | 4 Mb on-chip Flash (pre-programmed with MAC ID), 128 KB ROM, 160 KB IRAM, 64 KB DRAM |
| Host Interface | SPI slave only (MOSI/MISO/SCK/SSN); UART and I²C pins present but debug-only, not enabled in production firmware |
| Power Consumption | <4 µA in Power Down mode (3.3 V I/O), 380 µA in Doze mode with beacon monitoring |
| Operating Voltage | VDDIO = 2.7–3.6 V; VBAT = 3.0–4.2 V (DC/DC input); crystal = 26 MHz ±100 ppm |
| Temperature Range | -40°C to +85°C ambient; RF performance characterized at 25°C with ≤3 dB variation at extremes |
Pinout & Package
The ATWINC1500B-MU-Y042 is housed in a 40-pin QFN package (5 mm × 5 mm, 0.4 mm pitch) with exposed thermal paddle requiring PCB ground connection. Pin functions are validated per Microchip DS70005374B, pages 6–9.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SPI_SSN | Digital I/O (active-low) | Slave select signal; must be driven by host MCU to initiate SPI transactions |
| SPI_SCK | Digital I/O | Clock input synchronized to host; determines maximum SPI speed (up to 20 MHz) |
| SPI_TXD | Digital I/O (MISO) | Serial data output from ATWINC1500B-MU-Y042 to host MCU |
| SPI_RXD | Digital I/O (MOSI) | Serial data input from host MCU to ATWINC1500B-MU-Y042 |
| GPIO2/IRQN | Digital I/O / Interrupt output | Open-drain interrupt signal indicating event completion (e.g., packet received, connection state change) |
| CHIP_EN | Analog input | Active-high enable; drives module into Power Down mode when low; requires 1 MΩ pull-down at power-up if host GPIO is tristated |
| RESETN | Digital input (active-low) | Hard reset control; must be held low ≥100 ns then released to enter Normal state |
| XO_P / XO_N | Analog differential | 26 MHz crystal connections; internal 5 pF load per pin; external loading capacitance must account for on-board Conboard |
| VDDIO | Power supply | Digital I/O rail (2.7–3.6 V); powers SPI/UART/GPIO logic; separate from core (VDDC) and RF supplies |
| PADDLE VSS | Power ground | Exposed thermal pad; must be soldered to solid PCB ground plane for thermal and EMI performance |
Key Features
| Feature | Design Value |
|---|---|
| Hardware-accelerated network stack | On-chip TCP/UDP/DHCP/ARP/HTTP/TLS/DNS reduces host MCU RAM/CPU load; no external protocol stack required |
| Integrated RF front-end | Fully embedded PA, LNA, T/R switch, and PMU eliminate discrete RF components and reduce BOM count |
| Security acceleration | Dedicated cipher engine handles WEP/WPA-TKIP/WPA2-CCMP-AES encryption/decryption and TLS handshake offload |
| OTA firmware upgrade | Complete system firmware update over Wi-Fi without host intervention or physical access |
| Low-power sleep architecture | Chip-level power gating and dedicated 32 kHz oscillator enable sub-millisecond wake-up from Doze mode for beacon listening |
Applications
| Smart Home Sensor Node | Industrial Wireless Gateway |
|---|---|
Use Scenario: Battery-powered temperature/humidity sensor transmitting data hourly to cloud via home Wi-Fi router. IC Role / Device Role / Timing Role: Standalone Wi-Fi SoC managing link establishment, TLS-secured MQTT transmission, and deep-sleep scheduling. Use Value: <4 µA Power Down current extends 2-AA battery life beyond 5 years; integrated Flash stores credentials and firmware patches. | Use Scenario: DIN-rail mounted gateway collecting Modbus RTU data from PLCs and bridging to enterprise Wi-Fi infrastructure. IC Role / Device Role / Timing Role: Host-independent network controller providing secure AP mode for local device onboarding and STA mode for upstream cloud connectivity. Use Value: Hardware-accelerated TLS and dual-mode (STA+Soft-AP) operation enable simultaneous secure local commissioning and remote telemetry without host CPU overhead. |
| Medical Wearable Monitor | Asset Tracking Tag |
Use Scenario: Chest-worn ECG patch uploading encrypted waveform snippets to HIPAA-compliant server during brief Wi-Fi connection windows. IC Role / Device Role / Timing Role: Low-latency Wi-Fi transceiver with fast AP re-association (150 ms) and hardware IP checksum offload. Use Value: 380 µA Doze mode preserves battery between transmissions; on-chip memory management engine minimizes host DMA buffer management burden. | Use Scenario: GPS-enabled logistics tag reporting location every 6 hours via public Wi-Fi hotspots in warehouses and transport hubs. IC Role / Device Role / Timing Role: Autonomous network joiner using pre-stored SSID/PSK, performing passive scan, and initiating TLS handshakes without host coordination. Use Value: Pre-programmed MAC ID (Y042 suffix) ensures unique identity; integrated eFuse stores calibrated TX power and crystal offset for consistent RF performance across units. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Wi-Fi SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ATWINC1510B-MU-Y042 | 8 Mb Flash (vs. 4 Mb), same pinout, identical RF/performance specs, firmware-compatible | Required when larger OTA firmware images, extended certificate storage, or future feature expansion needed | Select ATWINC1510B-MU-Y042 only if >4 Mb Flash capacity is confirmed necessary; otherwise ATWINC1500B-MU-Y042 offers cost and footprint advantage |
| ESP32-WROOM-32 | Integrated dual-core Xtensa LX6 MCU, Bluetooth LE, 4 MB PSRAM option, 3.3 V only, no DC/DC converter | Suitable for host-less applications needing rich local processing; less optimal for ultra-low-power intermittent transmit duty cycles | Choose ESP32-WROOM-32 when Bluetooth coexistence, local AI inference, or high-speed USB/JTAG debug is required; ATWINC1500B-MU-Y042 remains superior for minimal-power, SPI-hosted designs |
Compared with ATWINC1510B-MU-Y042, ATWINC1500B-MU-Y042 provides identical RF performance and power efficiency at lower Flash cost and smaller firmware memory footprint; versus ESP32-WROOM-32, it delivers deeper sleep currents and simpler SPI integration but lacks embedded application processing and Bluetooth.
Availability
ATWINC1500B-MU-Y042 is available at Aetrix Electronics and suitable for smart home sensors, medical wearables, industrial gateways, and asset tracking tags requiring stable component supply, pre-programmed MAC identity, and long-term lifecycle support.
Supply support for ATWINC1500B-MU-Y042 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 devices, and connectivity solutions for embedded systems.
The ATWINC15x0B product line was designed specifically for ultra-low-power, host-processor-offloaded Wi-Fi applications in battery-constrained IoT endpoints, emphasizing minimal external components and certified interoperability.
FAQ
What is the primary function of the ATWINC1500B-MU-Y042 in an embedded system?
The ATWINC1500B-MU-Y042 serves as a standalone Wi-Fi network controller SoC that handles all IEEE 802.11b/g/n MAC/PHY operations, TCP/IP stack processing, and TLS security acceleration. It relieves the host MCU of Wi-Fi protocol complexity, enabling simple SPI-based communication while maintaining ultra-low power consumption. The ATWINC1500B-MU-Y042 integrates Flash, RAM, and RF front-end to minimize external components.
Does the ATWINC1500B-MU-Y042 support UART or I²C for host communication?
No - although UART_TXD, UART_RXD, I2C_SDA, and I2C_SCL pins are physically present on the ATWINC1500B-MU-Y042 package, they are designated for debug and testing only per Microchip's official documentation. Production firmware does not enable these interfaces; the sole supported host interface is SPI (SPI_SSN, SPI_SCK, SPI_TXD, SPI_RXD). Using UART or I²C in final design violates specification and risks undefined behavior.
What does the "Y042" suffix indicate in ATWINC1500B-MU-Y042?
The "Y042" suffix indicates two specific factory-configured attributes: "Y" denotes tray packaging, and "042" signifies that the unit has a unique, pre-programmed MAC address stored in eFuse Bank 1. This eliminates post-manufacturing MAC provisioning steps and ensures IEEE-compliant uniqueness out-of-box. The ATWINC1500B-MU-Y042 also contains 4 Mb Flash, distinguishing it from the 8 Mb ATWINC1510B variant.
How does the ATWINC1500B-MU-Y042 achieve ultra-low power consumption in battery-operated devices?
The ATWINC1500B-MU-Y042 achieves ultra-low power through multiple hardware-enforced states: <4 µA Power Down mode (all circuits gated except CHIP_EN detection), 380 µA Doze mode (retains register context and monitors beacons), and fast wake-up (<1 ms) via IRQN or SPI activity. Its integrated DC/DC converter optimizes battery-to-core voltage conversion, and the on-chip 32 kHz oscillator enables precise timing without external crystals in sleep states. These features make ATWINC1500B-MU-Y042 ideal for multi-year battery life in intermittent transmit applications.
Is the ATWINC1500B-MU-Y042 pin-compatible with other members of the ATWINC15x0B family?
Yes - the ATWINC1500B-MU-Y042 shares identical 40-pin QFN (5×5 mm) mechanical and electrical pinout with ATWINC1510B-MU-Y042 and all ATWINC15x0B variants. Signal mapping, power domains, and timing specifications are fully aligned. Firmware and hardware design can be reused across the family; the primary differentiation lies in Flash size (4 Mb vs. 8 Mb) and eFuse programming (MAC ID presence), not pin functionality or layout.
ATWINC1500B-MU-Y042 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-Y042 FAQ
1.How can I place an order for ATWINC1500B-MU-Y042 through Aetrix?
Please submit a Request for Quotation (RFQ) for ATWINC1500B-MU-Y042 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-Y042 reliable?
The price and inventory of ATWINC1500B-MU-Y042 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-Y042 is usually 5 days.
3.What payment methods are accepted for ATWINC1500B-MU-Y042?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATWINC1500B-MU-Y042 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATWINC1500B-MU-Y042?
ATWINC1500B-MU-Y042 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATWINC1500B-MU-Y042 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-Y042?
For technical support, including ATWINC1500B-MU-Y042 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATWINC1500B-MU-Y042 requirements.
6.How does Aetrix verify that ATWINC1500B-MU-Y042 is sourced from the original manufacturer or authorized distributors?
All ATWINC1500B-MU-Y042 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-Y042 meets industry standards.
7.What is the process for return or replacement of ATWINC1500B-MU-Y042?
All ATWINC1500B-MU-Y042 units undergo pre-shipment inspection (PSI). If there is an issue with ATWINC1500B-MU-Y042, 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-Y042 part is unused and in its original packaging.
Return procedure for ATWINC1500B-MU-Y042:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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