A31L214CL

The A31L214CL is an ultra-low power microcontroller from the A31L21x series featuring a high-performance ARM Cortex-M0+ core running at 32 MHz. It combines a comprehensive peripheral set, security and analog features, and multiple serial interfaces to address embedded control applications across IoT, metering, access control and portable devices.

Designed for energy-conscious designs, the device supports a 1.71 V to 3.6 V supply range and offers deep-sleep power modes and fast wakeup, enabling battery-powered and always-on systems while integrating memory, ADC, LCD drive and crypto primitives to simplify BOM and system design.

Key Features

• Core  ARM Cortex-M0+ 32-bit core at 32 MHz for deterministic embedded control and efficient code execution.
• Memory  128 KB internal Flash with 4 KB data Flash and 20 KB SRAM, plus a 32-byte backup register for retained state across power modes.
• Power and Operating Range  Operates from 1.71 V to 3.6 V with ultra-low power modes: 90 µA/MHz in RUN, 0.99 µA DEEP SLEEP with RTCC and retention, 0.35 µA DEEP SLEEP with power control, and 45 nA shutdown (DEEP SLEEP mode 3). Fast wakeup (~5 µs) supports responsive low-power operation.
• Timers and DMA  Eight general-purpose timers with PWM/capture/periodic/one-shot modes and seven DMA channels for efficient peripheral-to-memory transfers.
• Analog and Sensing  12-bit A/D converter (8 channels, 1 Msps), two comparators and an integrated temperature sensor for sensor interfacing and analog monitoring.
• Interfaces and Display  Multiple serial interfaces including USART, UART, LPUART, SPI, I2C and smart card interfaces, plus an LCD driver supporting up to 4×15 segments with 16-step contrast control and resistor/cap bias options.
• Security and Integrity  Hardware AES-128 engine and True Random Number Generator (TRNG) for cryptographic functions, plus CRC units and a 128-bit unique ID for device identification and data integrity.
• System Reliability  Watchdog timer, POR/LVR/LVI protections, clock monitoring and SWD debug interface for robust system control and development.
• Package and Temperature  48-LQFP (0707) surface-mount package, 41 GPIOs, and industrial operating temperature range from -40 °C to +105 °C.

Typical Applications

• Smart Meters  On-meter control and secure data handling using integrated ADC channels, AES-128 and TRNG for secure readings and communications.
• Smart Card Readers  Interface and protocol handling with multiple UART/USART/LPUART ports and secure cryptographic support for authentication.
• Building & Home Control  Sensor aggregation, user interface and low-power standby through ADCs, RTC and LCD driver with deep-sleep power optimizations.
• IoT & Wireless Sensor Nodes  Low-voltage operation, microcontroller-level security and multiple serial buses facilitate sensor interfacing and secure connectivity.
• Portable Healthcare & Consumer Electronics  Battery-friendly power modes, fast wakeup and integrated peripherals simplify compact, power-sensitive product designs.

Unique Advantages

• Highly integrated peripheral set: Combines ADC, comparators, RTC, LCD driver, timers, multiple serial interfaces and DMA to reduce external components and simplify board design.
• Low-power flexibility: Multiple low-power modes with sub-µA deep-sleep and fast (~5 µs) wakeup let designers optimize runtime vs. power for battery-operated systems.
• Compact package with ample I/O: 48-LQFP package with 41 I/O pins provides a balance of small footprint and connectivity for space-constrained applications.
• Security built-in: AES-128 accelerator and True RNG enable on-device cryptographic operations to support secure firmware and data handling.
• Robust analog subsystem: 12-bit ADC (8 channels, 1 Msps) plus comparators and temperature sensing enable precise sensor interfacing without extra ICs.
• Industrial temperature and wide supply range: −40 °C to +105 °C operating range and 1.71 V–3.6 V supply make the device suitable for demanding environments and varied power architectures.

Why Choose A31L214CL?

The A31L214CL delivers a balanced combination of Cortex-M0+ performance, extensive on-chip peripherals and ultra-low power characteristics tailored for embedded control and IoT endpoints. Its integrated security, ADC, display support and multiple communication ports simplify system architecture while reducing BOM and board area.

As part of the A31L21x family, the A31L214CL is a practical choice for designers targeting smart meters, access control, building automation and portable devices that require low standby power, reliable operation across a wide temperature range and scalable memory and peripheral options within the series.

Request a quote or submit a quote request for the A31L214CL to evaluate suitability for your design or to get pricing and availability information from Abov Semiconductor's sales channel.