A31L213KN

The A31L213KN is an ultra‑low power 32‑bit microcontroller from Abov’s A31L21x series, built around an ARM Cortex‑M0+ core. It integrates on‑chip Flash and SRAM with a broad set of security, analog and communications peripherals to address embedded control and IoT endpoint designs.

Designed for low‑power, battery‑sensitive systems and industrial applications, the device combines performance, on‑chip integration (AES‑128, true RNG, DMA, CRC, RTCC) and a flexible peripheral set to simplify system design and reduce BOM.

Key Features

• CPU ARM Cortex‑M0+ 32‑bit core running up to 32 MHz for efficient control and real‑time tasks.
• Memory 64 Kbytes internal Flash for program code, 4 Kbytes Data Flash and 20 Kbytes SRAM plus 32‑byte backup register for data retention and application storage.
• Power and Operating Range Single‑supply operation from 1.71 V to 3.6 V and ambient operation from −40 °C to 105 °C. Ultra‑low power modes include RUN and deep sleep states with documented sleep currents and fast wakeup.
• Analog and Sensing 12‑bit A/D converter (8 channels) and onboard comparators provide precision sensor interfacing and analog measurement capability.
• Interfaces and Connectivity Rich serial connectivity including I2C, SPI, USART, UART, LPUART and Smart Card interface for diverse peripheral and subsystem integration.
• Timers and PWM Multiple timers (3 × 16‑bit) support periodic, one‑shot, PWM and capture functions for motor control, timing and PWM‑driven user interfaces.
• Security and System Integrity Hardware AES‑128 accelerator, true RNG and CRC generator support secure communications, authenticated operations and data integrity checks.
• System Peripherals DMA engine, RTCC (Real Time Clock and Calendar), watchdog timer and internal RC oscillator simplify system design and power management.
• Package and I/O 28 user I/O pins in a 32‑pin LQFP (32‑LQFP) package suitable for surface‑mount assembly.

Typical Applications

• Smart Meters and Energy Instruments On‑chip ADC, RTCC and low‑power modes enable long‑term, accurate metering and time‑based logging.
• Smart Card Readers and Secure Terminals Smart Card interface combined with AES‑128 and true RNG supports secure authentication and transaction processing.
• Building & Home Automation Timers, multiple serial interfaces and low standby currents suit door locks, access control and environmental controllers.
• IoT Devices and Wireless Sensors Compact footprint, wide voltage range and integrated peripherals reduce BOM for battery‑powered sensor nodes and edge devices.
• Portable Healthcare and Consumer Electronics Integrated ADC, low‑power operation and compact package support portable measurement and user‑interface applications.

Unique Advantages

• Highly integrated security: AES‑128 hardware accelerator and true RNG enable built‑in cryptographic functions without off‑chip modules.
• Low‑power operation: Documented low current consumption across RUN and deep‑sleep modes helps extend battery life in portable and remote applications.
• Comprehensive peripheral mix: ADC, comparators, RTCC, DMA and multiple serial buses reduce external component count and simplify system architecture.
• Wide voltage and temperature range: 1.71–3.6 V supply and −40 °C to 105 °C operating range support industrial and commercial deployments.
• Compact package with ample I/O: 28 user I/O in a 32‑LQFP package balances small board area with real‑world connectivity needs.

Why Choose A31L213KN?

The A31L213KN positions itself as a balanced, integrated solution for embedded control applications that require low power, onboard security and a versatile peripheral set. Its Cortex‑M0+ core, combined with Flash, SRAM and data flash, supports compact firmware stacks while hardware accelerators and system peripherals offload common tasks to reduce CPU load.

This device is well suited to designers building IoT endpoints, secure terminals, smart meters and portable devices who need a single‑chip solution that reduces BOM, maintains robust operation across a wide temperature and voltage range, and scales within the A31L21x family for variant choices.

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