A31L213KU

The A31L213KU is an ultra-low power 32-bit microcontroller based on the ARM Cortex-M0+ core, delivering up to 32 MHz operation. It combines on-chip Flash and data Flash, generous SRAM, and a range of analog, timing and communication peripherals targeted at compact low-power embedded designs.

Designed for battery-powered and industrial-edge applications, the device supports multiple serial interfaces, hardware security primitives and sleep/deep-sleep power modes to minimize system-level component count while meeting extended temperature operation.

Key Features

• Core ARM Cortex-M0+ 32-bit core running up to 32 MHz for efficient control and real-time tasks.
• Memory 64 Kbytes of on-chip Flash, 4 Kbytes of data Flash and 20 Kbytes of SRAM with a 32‑byte backup register for reliable code and data storage.
• Power and Low-Power Modes Operates from 1.71 V to 3.6 V with family-level low-power metrics: 90 µA/MHz in RUN, ultra-low deep-sleep currents down to sub‑microampere levels with real-time clock retention (0.99 µA) and fast wake-up (~5 µs).
• Timers, RTC and Reset Multiple general-purpose timers (4 per this device variant), real-time clock, watchdog timer and power reset/voltage monitoring functions (POR/LVR/LVI) for robust timekeeping and system reliability.
• Analog 12-bit A/D converter (8 channels on this variant) and comparators plus an internal temperature sensor to support sensor interfacing and analog signal monitoring.
• Connectivity Rich serial interfaces including 2 × USART, 1 × UART, 2 × LPUART, 3 × I2C and 1 × SPI, plus a smart-card (SC) interface—suitable for versatile peripheral and legacy interface needs.
• Security and Data Integrity AES-128 encryption engine, true random number generator (RNG), CRC unit (8/16/32-bit) and a 128-bit unique ID to support secure boot, communication and data integrity checks.
• System and DMA Seven DMA channels and SWD debug interface for efficient data movement and streamlined development and debugging.
• Package and Temperature Available in a compact 32‑QFN package with 28 I/O pins and rated for operation from −40 °C to +105 °C for industrial temperature ranges.

Typical Applications

• Smart Meters — Provides low-power monitoring, secure data handling (AES, RNG, CRC) and multiple serial interfaces for metrology and communication tasks.
• Smart Card Readers — Smart-card interface combined with hardware security primitives supports secure transaction and reader control functions.
• Home and Building Control — Timers, RTC, low-power modes and multi-protocol connectivity enable energy-efficient access control, sensor hubs and automation controllers.
• IoT and Wireless Sensor Nodes — Compact package, sub‑microamp deep-sleep currents, and on-chip ADC/comparator support battery-powered sensing and long-life IoT endpoints.
• Portable Healthcare and Consumer Devices — Integrated memory, low-power operation and mixed-signal peripherals simplify compact device designs that require secure data handling.

Unique Advantages

• Highly integrated peripherals: On-chip Flash, data Flash, SRAM and a broad mix of timers, ADC, comparators and serial interfaces reduce BOM and PCB area.
• Low-power operation with fast wake-up: Deep-sleep and shutdown modes with wake-up in approximately 5 µs enable responsive, battery-friendly designs.
• Built-in security primitives: AES-128, RNG and CRC allow designers to implement encryption and integrity checks without external hardware.
• Flexible connectivity set: Multiple USART/UART/LPUART channels, I2C and SPI plus smart-card support enable diverse peripheral and protocol integration.
• Industrial temperature range in a small footprint: −40 °C to +105 °C operation and a 32‑QFN package make the part suitable for compact, temperature-demanding deployments.
• Hardware acceleration and DMA: Seven DMA channels and cryptographic acceleration reduce CPU load and improve system throughput.

Why Choose A31L213KU?

The A31L213KU balances performance, integration and ultra-low power for embedded systems that require compact form factor, secure handling and diverse I/O. Its ARM Cortex-M0+ core, on-chip Flash/data Flash and 20 KB SRAM provide the memory foundation for firmware-rich applications, while integrated AES and RNG support hardware-based security.

This device is particularly well suited for designers of battery-powered IoT nodes, smart-card enabled products, metering and building-control equipment who need low standby currents, fast wake-up and a robust peripheral set in a 32‑QFN package across −40 °C to +105 °C operating range.

Request a quote or contact sales to discuss volume pricing, lead times and integration requirements for the A31L213KU.