Microchip Technology ATWINC1510B-MU-T

Overview

ATWINC1510B-MU-T from Microchip Technology is an IEEE 802.11b/g/n single-stream (1×1) Wi-Fi SoC network controller with integrated PA, LNA, T/R switch, and 8 Mb flash memory. It operates in the 2.4 GHz ISM band, delivers up to 72 Mbps PHY rate, supports SPI host interface, and targets ultra-low-power embedded IoT endpoints requiring secure OTA firmware updates and on-chip TCP/IP stack offload.

For engineers reviewing the ATWINC1510B-MU-T datasheet, ATWINC1510B-MU-T pinout, ATWINC1510B-MU-T application, or ATWINC1510B-MU-T equivalent, key selection criteria include its 8 Mb flash capacity, -40°C to +85°C industrial temperature range, 3.0–4.2 V DC/DC input, <4 µA power-down current, and hardware-accelerated TLS/IP checksum for secure, low-latency wireless connectivity in resource-constrained designs.

Technical Context

The ATWINC1510B-MU-T integrates a Cortus APS3 32-bit RISC processor running proprietary Wi-Fi firmware, managing MAC/PHY functions, security protocols (WEP/WPA/WPA2/EAP-TLS), and full TCP/IP stack (TCP, UDP, DHCP, ARP, HTTP, TLS, DNS). Its WLAN subsystem uses dedicated datapath engines for FCS checking and AES-CCMP encryption, hardwired logic for EDCA/QoS timing and beacon control, and software-managed association/power-save queuing.

Power architecture includes a buck DC/DC converter (VBAT input 3.0–4.2 V), on-chip low-power 32 kHz oscillator, and four defined sleep states: Power-Down (<4 µA), Doze (380 µA with beacon monitoring), Sleep, and Active. Clocking relies on a mandatory 26 MHz external crystal (±100 ppm initial tolerance) connected to XO_P/XO_N pins, with internal 5 pF load capacitance per terminal.

Key Specifications

Pinout & Package

The ATWINC1510B-MU-T is housed in a 5 mm × 5 mm, 0.85 mm thick, 40-pin QFN package with exposed thermal paddle (PADDLE VSS) requiring connection to system ground. Pin pitch is 0.40 mm; pad width is 0.20 mm; exposed pad size is 3.85 mm × 3.85 mm.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Wi-Fi network controller applications.

Compared with ESP32-WROOM-32 and CYW4343W, the ATWINC1510B-MU-T delivers the lowest integration effort for Wi-Fi-only applications through its complete, pre-validated firmware stack, on-chip 8 Mb flash, and hardware-accelerated security - reducing time-to-certification by 6–8 weeks and eliminating external memory layout constraints.

Availability

ATWINC1510B-MU-T is available at Aetrix Electronics and suitable for smart home sensors, industrial gateways, medical wearables, and asset trackers requiring stable component supply, long-term lifecycle support, and regulatory-compliant Wi-Fi connectivity.

Supply support for ATWINC1510B-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 leading provider of microcontrollers, analog, FPGA, and connectivity solutions, with a focus on robust, low-power, and secure embedded systems.

The ATWINC15x0B product line was designed specifically for ultra-low-power, pre-certified Wi-Fi connectivity in resource-constrained IoT endpoints - enabling rapid integration of secure, standards-compliant wireless capability without RF expertise or stack development.

FAQ

What is the flash memory capacity of the ATWINC1510B-MU-T?

The ATWINC1510B-MU-T contains 8 Mb of integrated flash memory, which stores the complete Wi-Fi firmware, TCP/IP protocol stack, TLS certificate store, and application-specific assets. This eliminates the need for external serial flash in most implementations and supports secure over-the-air (OTA) firmware updates with dual-bank atomicity. The ATWINC1510B-MU-T's 8 Mb capacity is double that of the ATWINC1500B-MU-T (4 Mb), enabling larger feature sets and future firmware expansion.

Does the ATWINC1510B-MU-T require an external crystal oscillator?

Yes, the ATWINC1510B-MU-T requires a 26 MHz fundamental-mode crystal oscillator connected to the XO_P and XO_N pins. The device has 5 pF internal load capacitance per terminal, so external load capacitors must be selected to achieve a total net load of 10–12 pF. Crystal specifications must meet ≤150 Ω ESR and ±100 ppm initial tolerance. An external clock source may bypass the crystal but must meet strict jitter (<1 psec RMS) and swing (0.5–1.2 Vpp) requirements.

What power modes does the ATWINC1510B-MU-T support, and what are their current draws?

The ATWINC1510B-MU-T supports four key power states: Power-Down (<4 µA at 3.3 V I/O), Doze (380 µA with beacon monitoring enabled), Sleep (intermediate state), and Active (typ. 150 mA peak during TX). Power-Down mode disables all circuitry except CHIP_EN detection; Doze preserves chip settings and wakes rapidly for beacon listening. These modes are controlled via CHIP_EN and firmware commands, enabling multi-year battery life in intermittent-use applications using the ATWINC1510B-MU-T.

Can the ATWINC1510B-MU-T operate as both a station and an access point?

Yes, the ATWINC1510B-MU-T supports both Station (STA) and Soft Access Point (Soft-AP) modes simultaneously - enabling it to connect to an upstream Wi-Fi network while hosting a local network for configuration or debugging. This dual-role capability is implemented in firmware and requires no hardware changes. The ATWINC1510B-MU-T's on-chip memory management engine and hardware-accelerated frame aggregation ensure stable performance in concurrent mode without host MCU overload.

What security protocols are supported by the ATWINC1510B-MU-T?

The ATWINC1510B-MU-T supports WEP 64/128, WPA-TKIP, WPA2-CCMP (AES-128), and enterprise-grade WPA/WPA2 (802.1X) with EAP-TLS, EAP-PEAPv0/1, and EAP-TTLSv0 - all accelerated by dedicated hardware crypto engines. Support for EAP methods requires firmware version 19.6.1 or later. The ATWINC1510B-MU-T's hardware TLS accelerator reduces handshake time to under 100 ms and offloads 100% of cryptographic operations from the host MCU, ensuring secure cloud connectivity even on low-end microcontrollers.