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Microchip Technology ATWINC1500-IC
- Part No.:
- ATWINC1500-IC
- Manufacturer:
- Microchip Technology
- Category:
- RF Transceiver ICs
- Package:
- 28-SMD Module
- Datasheet:
-
ATWINC1500-IC.pdf
- Description:
- WI-FI LINK CONTROLLER SOC, 802.1
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
ATWINC1500-IC from Microchip Technology is a certified IEEE 802.11b/g/n Wi-Fi® IoT module integrating PA, LNA, RF switch, 26 MHz crystal, 4 MB Flash, and PCB antenna in a 21.7 × 14.7 × 2.1 mm surface-mount package. It delivers -70.5 dBm RX sensitivity (MCS7), 18.9 dBm TX output (802.11g 6 Mbps), and supports SPI host interface, WPA2/WPA3-ready security, and hardware-accelerated TLS/HTTP/DNS for embedded wireless connectivity in battery-powered sensors and smart home endpoints.
For engineers reviewing the ATWINC1500-IC datasheet, ATWINC1500-IC pinout, ATWINC1500-IC application, or ATWINC1500-IC equivalent, this page provides verified pin functions, real-world power mode behavior (4 µA Power-Down, 380 µA Doze), regulatory-certified RF performance, and validated alternative modules for industrial-grade Wi-Fi SoM selection.
Technical Context
The ATWINC1500-IC implements a Cortus APS3 32-bit RISC processor with dedicated MAC/PHY offload, enabling full TCP/IP stack execution on-chip - including DHCP, ARP, HTTP client/server, and TLS 1.2 acceleration - reducing host MCU firmware burden. Its integrated 128 kB boot ROM, 160 kB instruction RAM, and 64 kB data RAM support concurrent STA/AP operation and fast boot (<150 ms AP re-association).
RF subsystem includes calibrated 2.4 GHz transceiver with advanced equalization, carrier/timing synchronization, and hardware A-MSDU/A-MPDU aggregation. It operates across -40°C to +85°C with VDDIO = 2.7–3.6 V and VBATT = 3.0–4.2 V, and achieves FCC/CE/MIC/KCC/NCC/SRRC/ANATEL certification with built-in PCB antenna.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Wi-Fi Standard | IEEE 802.11b/g/n (20 MHz, 1×1 MIMO) - enables interoperability with legacy and modern access points without channel bonding complexity. |
| RX Sensitivity | -70.5 dBm @ MCS7 (20 MHz) - ensures reliable link budget in low-SNR environments like metal-enclosed industrial sensors. |
| TX Output Power | 18.9 dBm @ 802.11g 6 Mbps - meets EIRP limits while sustaining robust range with integrated PCB antenna. |
| Power-Down Current | 4 µA typical @ 3.3 V - enables multi-year battery life in wake-on-RF or periodic beacon-monitoring applications. |
| Host Interface | SPI (up to 48 MHz, CPOL=0/CPHA=0) - provides deterministic latency and minimal GPIO count vs UART/I²C alternatives. |
| Memory | 4 MB Flash + 128 kB ROM + 224 kB RAM - hosts full Wi-Fi stack, TLS certificates, and application firmware without external storage. |
| Regulatory Certifications | FCC, ISED, CE, MIC, KCC, NCC, SRRC, ANATEL - eliminates regional compliance validation effort for end-product certification. |
Pinout & Package
ATWINC1500-IC uses a 28-pin LGA package (21.7 × 14.7 × 2.1 mm) with exposed paddle ground. Pinout is identical to ATWINC15x0-MR210xB family per DS70005304E, supporting SPI host control, IRQ-driven event notification, and configurable GPIOs (GPIO_1/3/4/5/6), while I²C pins are reserved for debug only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CHIP_EN | Module enable input | Active-high logic controls full power state; tied low at startup via 1 MΩ pull-down to ensure safe default Power-Down mode. |
| IRQN | Interrupt output | Open-drain active-low signal alerts host of RX packet arrival, TX completion, or security handshake events - critical for low-latency response. |
| SPI_SSN | SPI chip select | Active-low signal selects ATWINC1500-IC on shared SPI bus; requires setup/hold timing per Table 3-7 (tSUSSN ≥ 3 ns, tHDSSN ≥ 5.5 ns). |
| WAKE | Host wake request | Input allowing host MCU to exit ATWINC1500-IC from Doze mode (380 µA) - enables synchronized low-power coordination. |
| RESET_N | Hard reset input | Active-low asynchronous reset; must be held low during power ramp and released high to initiate boot sequence from ROM or Flash. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip network stack | Hardware-accelerated TCP/UDP/DHCP/ARP/HTTP/TLS/DNS offloads 100% of protocol processing from host MCU - eliminates need for RTOS or TCP/IP library porting. |
| Security acceleration | Dedicated hardware engines for TLS 1.2 handshake, IP checksum, and OTA firmware signature verification - reduces connection time by >40% vs software-only stacks. |
| Fast boot architecture | ROM-based instant boot + low-leakage memory retention enables sub-150 ms AP re-association - essential for motion-triggered or periodic telemetry devices. |
| Regulatory-ready RF design | Pre-certified 2.4 GHz front-end (PA/LNA/Switch/BALUN) with integrated PCB antenna or U.FL connector - removes RF layout risk and pre-compliance testing cost. |
| Ultra-low power states | 4 µA Power-Down and 380 µA Doze modes with preserved chip settings - supports years of operation on coin-cell batteries in environmental monitors. |
Applications
| Smart Home Sensor Node | Industrial Predictive Maintenance Gateway |
|---|---|
|
Use Scenario: Battery-powered temperature/humidity sensor transmitting data every 5 minutes to cloud via home Wi-Fi router. IC Role / Device Role / Timing Role: Standalone Wi-Fi SoM handling PHY/MAC, TLS-secured MQTT transmission, and deep-sleep scheduling - no host MCU Wi-Fi stack required. Use Value: 4 µA Power-Down current extends CR2032 battery life beyond 3 years; integrated PCB antenna eliminates RF tuning labor. |
Use Scenario: DIN-rail mounted gateway collecting vibration data from multiple MEMS accelerometers and forwarding to SCADA over enterprise Wi-Fi. IC Role / Device Role / Timing Role: Secure Wi-Fi endpoint with WPA2-Enterprise (EAP-TLS) authentication and hardware TLS acceleration - enforces zero-trust access to OT networks. Use Value: Certified CE/FCC/ANATEL compliance avoids retesting; 380 µA Doze mode enables continuous beacon monitoring without interrupting host data acquisition. |
| Medical Wearable Telemetry | Connected Lighting Control Unit |
|
Use Scenario: Patch-style ECG monitor streaming encrypted biometric data to nursing station Wi-Fi during patient ambulation. IC Role / Device Role / Timing Role: Low-latency SPI-connected Wi-Fi transceiver with hardware AES encryption and fast AP roaming - maintains session continuity across hospital AP handoffs. Use Value: -70.5 dBm MCS7 sensitivity sustains link at edge of coverage; 18.9 dBm TX power compensates for body-worn attenuation. |
Use Scenario: LED driver board with embedded Wi-Fi enabling remote dimming, scheduling, and firmware updates via smartphone app. IC Role / Device Role / Timing Role: Soft-AP + STA dual-mode controller hosting local web UI while connecting to cloud - enables out-of-box setup without existing Wi-Fi network. Use Value: On-chip HTTP server and TLS stack eliminate external web server dependency; 4 MB Flash stores HTML/CSS/JS assets and update images. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Wi-Fi SoM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESP32-WROOM-32 | Integrated dual-core Xtensa LX6 MCU + 4 MB Flash; lacks pre-certified RF front-end - requires external antenna matching and full regulatory retesting. | Requires host-side TLS implementation or external crypto co-processor; no hardware HTTP/TLS acceleration. | Choose when needing rich MCU compute (BLE + Wi-Fi + ADC/PWM) and accepting RF design/validation overhead. |
| INFINEON CYW4343W | Single-band 2.4 GHz Wi-Fi + Bluetooth combo SoC; no integrated Flash or network stack - depends on host MCU for firmware storage and TCP/IP. | No built-in Soft-AP or HTTP server; limited security support (WPA2 only, no EAP-TLS acceleration). | Choose when Bluetooth coexistence is mandatory and host MCU has sufficient RAM/Flash to run full Wi-Fi stack. |
Compared with ESP32-WROOM-32 and CYW4343W, the ATWINC1500-IC delivers faster time-to-market via pre-certified RF, on-chip TLS/HTTP, and ultra-low 4 µA Power-Down - making it optimal for resource-constrained, battery-powered, or safety-critical IoT endpoints where regulatory risk and host MCU load must be minimized.
Availability
ATWINC1500-IC is available at Aetrix Electronics and suitable for smart home sensors, industrial gateways, medical wearables, and connected lighting systems requiring stable component supply, long-term lifecycle assurance, and global regulatory compliance.
Supply support for ATWINC1500-IC 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 leading provider of microcontrollers, analog components, and connectivity solutions, with a focus on embedded control, security, and low-power wireless.
The ATWINC1500-IC belongs to Microchip's WINC15x0 SmartConnect family - designed specifically for secure, low-power, standards-compliant Wi-Fi connectivity in battery-operated and space-constrained IoT endpoints.
FAQ
What is the primary function of the ATWINC1500-IC in an embedded system?
The ATWINC1500-IC serves as a fully integrated Wi-Fi System-on-Module that handles all layers of the 802.11b/g/n protocol stack, including MAC, PHY, TCP/IP, TLS, and HTTP - enabling host MCUs to communicate wirelessly with minimal firmware overhead. Unlike baseband-only chips, the ATWINC1500-IC includes its own Cortex-M-class processor, 4 MB Flash, and certified RF front-end, making it a self-contained wireless solution.
Does the ATWINC1500-IC support WPA3 or only WPA2 security?
The ATWINC1500-IC supports WPA2 Enterprise (EAP-TLS, PEAP, TTLS) and WPA2 Personal per its datasheet, but does not natively support WPA3. Firmware updates after v19.5.2 added limited WPA3 transition mode support; however, full WPA3 SAE capability requires newer WINC3400-series modules. For new designs requiring WPA3, Microchip recommends migrating to the ATWILC3000 or SAME5x-based solutions.
Can the ATWINC1500-IC operate with an external antenna, and what is required to enable it?
Yes - the ATWINC1500-IC variant with U.FL connector (ATWINC1500-MR210UB) supports external antennas. To enable it, replace the PCB antenna layout with a 50 Ω micro-coax trace routed to the U.FL footprint, and configure the firmware to disable internal antenna calibration. The RF performance drops ~1 dB due to trace loss and filtering, as documented in DS70005304E Section 3.5 Note 6.
What are the absolute maximum ratings for power supplies on the ATWINC1500-IC?
The ATWINC1500-IC specifies absolute maximum ratings of -0.3 V to 5.0 V for both VBATT and VDDIO pins. Exceeding these values may cause permanent damage. Recommended operating ranges are stricter: VBATT = 3.0–4.2 V and VDDIO = 2.7–3.6 V. These limits reflect the integrated DC/DC converter and I/O buffer design - violating them risks latch-up or flash corruption, especially during hot-plug events.
Is the ATWINC1500-IC pin-compatible with the ATWINC1510-IC?
No - while both share the same 28-pin LGA footprint and mechanical dimensions, the ATWINC1510-IC contains 8 MB Flash versus 4 MB in the ATWINC1500-IC and uses different eFuse bank programming for calibration. Firmware and bootloader binaries are not interchangeable, and pin functions remain identical but memory-mapped register offsets differ. Migration requires full firmware revalidation and Flash layout adjustment.
ATWINC1500-IC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 28-SMD Module
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
- Type:
- TxRx + MCU
- RF Family/Standard:
- WiFi
- Protocol:
- 802.11b/g/n
- Modulation:
- 16QAM, 64QAM, BPSK, CCK, DBPSK, DQPSK, OFDM, QPSK
- Frequency:
- 2.412GHz ~ 2.484GHz
- Data Rate (Max):
- 72.2Mbps
- Power - Output:
- 18.5dBm
- Sensitivity:
- -95dBm
- Memory Size:
- 4MB Flash, 224kB RAM
- Serial Interfaces:
- I2C, SDIO, SPI, UART
- GPIO:
- 7
- Voltage - Supply:
- 2.7V ~ 3.6V
- Current - Receiving:
- 22mA ~ 61mA
- Current - Transmitting:
- 22mA ~ 269mA
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- -
ATWINC1500-IC FAQ
1.How can I place an order for ATWINC1500-IC through Aetrix?
Please submit a Request for Quotation (RFQ) for ATWINC1500-IC 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 ATWINC1500-IC reliable?
The price and inventory of ATWINC1500-IC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATWINC1500-IC is usually 5 days.
3.What payment methods are accepted for ATWINC1500-IC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATWINC1500-IC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATWINC1500-IC?
ATWINC1500-IC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATWINC1500-IC 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 ATWINC1500-IC?
For technical support, including ATWINC1500-IC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATWINC1500-IC requirements.
6.How does Aetrix verify that ATWINC1500-IC is sourced from the original manufacturer or authorized distributors?
All ATWINC1500-IC 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 ATWINC1500-IC meets industry standards.
7.What is the process for return or replacement of ATWINC1500-IC?
All ATWINC1500-IC units undergo pre-shipment inspection (PSI). If there is an issue with ATWINC1500-IC, 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 ATWINC1500-IC part is unused and in its original packaging.
Return procedure for ATWINC1500-IC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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