A31L213CL

The A31L213CL 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 analog and digital peripherals to support compact, power-sensitive embedded designs.

Targeted at IoT, metering, access control and portable consumer applications, the device delivers a balance of compute, security and analog I/O while operating from 1.71 V to 3.6 V and across an industrial temperature range of -40°C to 105°C.

Key Features

• Core  ARM Cortex-M0+ 32-bit core running up to 32 MHz for deterministic, low-power control tasks.
• Memory  64 Kbytes of on‑chip Flash and 20 Kbytes of SRAM provide code and data storage for typical embedded applications.
• Power and Low-Power Modes  Ultra-low power operation with measured figures such as 90 μA/MHz in RUN, 13 μA in specific low-frequency RUN modes, 0.99 μA in DEEP SLEEP with RTCC and retention, 0.35 μA in DEEP SLEEP with power control, and 45 nA in SHUT DOWN (DEEP SLEEP mode 3). Wake-up time is 5 μs from power modes.
• Analog and Data Conversion  12-bit ADC with 8 channels for sensor interfacing and analog monitoring, plus two comparators and an internal temperature sensor (per series datasheet).
• Timers and RTC  Multiple timers including eight 16-bit timers and a Real-Time Clock/Calendar (RTC/RTCC) for scheduling, PWM and timekeeping tasks.
• Security and Reliability  Hardware AES-128 engine and a True Random Number Generator (RNG) for cryptographic functions, plus CRC generation and watchdog support.
• DMA and System  Seven-channel DMA for efficient peripheral-to-memory transfers and SWD debug interface for development.
• Connectivity  Multiple serial interfaces including I2C, SPI, UART/USART and a Smart Card interface to support common peripheral and secure-card applications.
• Display and I/O  LCD driver/controller supporting a 15×4 arrangement and up to 41 general-purpose I/O pins for user interfaces and sensor connections.
• Supply and Package  Operates from 1.71 V to 3.6 V, specified for -40°C to 105°C, and available in a 48-LQFP (surface-mount) package.

Typical Applications

• Smart Meters  Low-power operation, RTC and ADC channels enable accurate energy measurement and long-term deployment in metering devices.
• Smart Card Readers  Integrated Smart Card interface, security engine (AES-128) and RNG support secure transaction and authentication flows.
• Building & Home Control  Timers, multiple serial interfaces and LCD driver facilitate user interfaces, sensor aggregation and control logic for access and automation systems.
• IoT and Wireless Sensor Nodes  Ultra-low sleep currents, fast wake-up and mixed-signal peripherals make the device suitable for battery-operated IoT endpoints and sensor gateways.
• Portable Consumer & Healthcare Devices  Compact package, low-voltage operation and ADC support enable portable instrumentation and embedded control in consumer health products.

Unique Advantages

• Highly integrated solution: On-chip Flash, SRAM and data flash plus ADC, comparators, timers and LCD driver reduce BOM and board area requirements.
• Energy-efficient operation: Multiple low-power modes with sub‑microamp DEEP SLEEP currents and fast 5 μs wake-up time help extend battery life in portable applications.
• Security-ready: Hardware AES-128 and a True RNG provide building blocks for secure communications and authentication.
• Flexible peripheral set: Rich serial connectivity (I2C, SPI, UART/USART, Smart Card), DMA and multiple timers simplify interfacing to sensors, displays and external modules.
• Industrial temperature range: Specified operation from -40°C to 105°C supports deployments across a wide range of environments.
• Compact footprint: 48-LQFP package with 41 I/O pins balances small board area with ample external connectivity.

Why Choose A31L213CL?

The A31L213CL combines a Cortex-M0+ control core with a comprehensive mix of analog, security and connectivity peripherals to address compact, power-sensitive embedded applications. Its low-voltage operation (1.71–3.6 V), industrial temperature range and multiple low-power modes make it suitable for battery-powered and field-deployed designs.

This device is ideal for engineers seeking a single-chip solution that reduces BOM and simplifies firmware development while providing hardware accelerators for security and efficient data movement via DMA. The A31L213CL offers a reliable platform for IoT nodes, metering, access control and portable devices that require balanced compute, analog I/O and energy efficiency.

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