A31L214ML

The A31L214ML is an ultra-low power 32-bit microcontroller in Abov's A31L21x series based on the ARM Cortex-M0+ core. It combines a 32 MHz Cortex-M0+ CPU with a broad set of on-chip peripherals, memory and power-management features for embedded control, sensor nodes and display-driven interfaces.

Designed for connected and battery-sensitive applications, the device targets smart meters, smart card readers, building and home control, IoT and portable consumer/healthcare devices by delivering integrated analog, security and connectivity resources while operating from 1.71 V to 3.6 V.

Key Features

• Core  ARM Cortex-M0+ 32-bit core running at up to 32 MHz for deterministic control and efficient code execution.
• Memory  128 KB internal Flash program memory, 4 KB data flash and 20 KB SRAM to support application code, data storage and runtime buffering.
• Power Management  1.71 V–3.6 V supply range 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 SHUT DOWN (DEEP SLEEP mode 3). Typical wakeup time is 5 μs.
• Analog and Sensing  12-bit A/D converter with 16 channels (1 Msps) plus temperature sensor and two comparators for sensor interfacing and analog monitoring.
• Timers and RTC  Nine general-purpose timers (periodic, one-shot, PWM, capture) and a Real Time Clock/Calendar (RTCC) for scheduling and precise timing.
• Security & RNG  Hardware AES-128 encryption/decryption engine and a True Random Number Generator for secure key material and cryptographic operations.
• Connectivity  Multiple serial interfaces including 2×USART, 1×UART, 2×LPUART, 3×I2C (up to 1 Mbps), 4×SPI (up to 16 Mbps), a smart card (SC) interface and LCD controller.
• System and DMA  Seven DMA channels, CRC units (8/16/32-bit), 128-bit unique ID, SWD debug interface and clock monitoring for system reliability.
• Display Support  Integrated LCD driver supporting up to 8×39 segments with 16-step contrast control and selectable bias options for compact user-interface designs.
• I/O and Package  Up to 73 general-purpose I/O pins, supplied in an 80-LQFP package; operating temperature −40 °C to +105 °C for commercial and industrial applications.

Typical Applications

• Smart Meters  Low-power operation, multiple serial interfaces and precise ADC support measurement, data logging and communication tasks in metering designs.
• Smart Card Readers  Smart card interface, secure AES engine and true RNG enable secure transaction handling and authentication.
• Building & Home Control  Integrated timers, RTC, plentiful I/O and LCD driver simplify user interfaces, scheduling and sensor control for access and automation systems.
• IoT & Wireless Sensor Nodes  Ultra-low power modes, ADC channels and flexible serial buses support battery-operated sensor endpoints and gateway nodes.
• Portable Healthcare & Consumer Electronics  Compact package, low sleep currents and on-chip display/ADC resources enable portable devices with extended battery life and local user feedback.

Unique Advantages

• Highly integrated solution: On-chip Flash, data flash, SRAM, ADC, LCD driver, AES-128 and true RNG reduce external components and simplify BOM.
• Ultra-low power operation: Multiple sleep modes with sub-microamp deep-sleep currents and fast 5 μs wakeup allow energy-efficient designs with quick responsiveness.
• Comprehensive connectivity: Multiple USART/UART/LPUART ports, I2C (up to 1 Mbps), SPI (up to 16 Mbps) and smart card interface enable flexible peripheral and network interfacing.
• Real-time control and timing: Nine general-purpose timers, RTCC and seven DMA channels support precise timing, PWM control and low-CPU-overhead data movement.
• Security-ready hardware: AES-128 engine and true RNG provide on-chip cryptographic primitives for secure communication and data protection.
• Industrial temperature and package options: −40 °C to +105 °C operating range and 80-LQFP package support robust deployment in commercial and industrial environments.

Why Choose A31L214ML?

The A31L214ML positions itself as a balanced, highly integrated microcontroller for embedded designs that need efficient compute and extensive on-chip peripherals. With a 32 MHz ARM Cortex-M0+ core, 128 KB Flash, 4 KB data flash, 20 KB SRAM and dedicated hardware for security, ADC, display and timing, it addresses a wide range of control, sensing and user-interface requirements while minimizing external components.

As part of the A31L21x family, the A31L214ML offers scalability across memory and package variants so designers can align device selection to product requirements. Its low-power modes, comprehensive serial connectivity and industrial temperature range make it suitable for long-life, robust embedded applications where integration and energy efficiency matter.

Request a quote or submit an inquiry to receive pricing, availability and lead-time information for the A31L214ML. Our team will respond with the details you need to move your design forward.