A31L222AR

The A31L222AR is an ultra-low power microcontroller in Abov's A31L22x series based on the ARM Cortex-M0+ core. It combines a 32-bit Cortex-M0+ CPU running up to 32 MHz with integrated memory and a range of analog and digital peripherals tailored for compact embedded designs.

Targeted for IoT, RF modules and portable or detector applications, the A31L222AR delivers flexible connectivity and extensive power management features 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 & Performance ARM Cortex-M0+ 32-bit core with up to 32 MHz operating speed, providing deterministic MCU performance for control and sensor processing tasks.
• Memory 32 Kbytes of internal Flash and 4 Kbytes of SRAM for application code and data, plus a 32-byte backup register for small retained data.
• Low-Power Operation Ultra-low power modes documented in the series: 78 µA/MHz in RUN, 10 µA in certain low-frequency RUN configurations, 0.99 µA DEEP SLEEP with RTCC and retention, 0.3 µA DEEP SLEEP with power control, and 36 nA SHUT DOWN (DEEP SLEEP mode 3). Typical wakeup time from power modes is 5 µs.
• Power Management & Reset Integrated power management features including Power-On Reset (POR), Low-Voltage Reset (LVR) and Low-Voltage Interrupt (LVI) for reliable start-up and brownout protection.
• Analog & Signal Conditioning 12-bit A/D converter capable of up to 0.5 MSPS with 6 ADC channels on the A31L222AR variant, plus a temperature sensor and two comparators for sensor interfacing and analog supervision.
• Timers & RTC Multiple 16-bit timers (4 on A31L222AR), a low-power timer and a Real Time Clock and Calendar (RTCC) for scheduling, PWM and timed events; watchdog timer for system reliability.
• Connectivity On-chip serial interfaces include 1 × USART, 1 × UART, 1 × LPUART, 1 × I2C (up to 1 Mbps) and 1 × SPI (up to 16 Mbps) for sensors, peripherals and host communication.
• System Reliability & Security CRC generator (8/16/32-bit) for data integrity checks, 128-bit unique ID, SWD debug interface and USART (UART) ISP support for programming and debugging.
• Package & I/O Compact 16-TSSOP (173 mil) package with 13 general-purpose I/Os, suitable for space-constrained boards.
• Environmental & Operating Range Wide supply voltage range from 1.71 V to 3.6 V and operating temperature from -40 °C to +105 °C for commercial and industrial environments.

Typical Applications

• RF Module – NB-IoT Control and sensor interface duties in compact RF modules where low power, small package and serial connectivity are required.
• Detector – Gas/Alarm Sensor acquisition, analog supervision and watchdog-protected control for detection and alarm systems operating across wide temperature ranges.
• IoT / Handheld Devices Battery-powered handheld or IoT endpoints leveraging low-power modes, real-time clock and multiple serial interfaces for peripherals and connectivity.

Unique Advantages

• Highly integrated peripheral set: 12-bit ADC, comparators, multiple timers, CRC unit and RTC reduce external component count and simplify board design.
• Measurable low-power credentials: Documented microamp and nanoamp class sleep currents and a 5 µs wakeup time enable responsive, energy-efficient battery designs.
• Flexible serial I/O: USART, UART, LPUART, I2C and SPI provide multiple interface options for sensors, radios and host connections without additional bridge ICs.
• Industrial operating range: 1.71–3.6 V supply and -40 °C to +105 °C rating support deployment in a broad set of commercial and industrial applications.
• Compact footprint: 16-TSSOP package with 13 I/Os enables compact PCB layouts for space-constrained products.

Why Choose A31L222AR?

The A31L222AR balances a 32-bit Cortex-M0+ core and a compact memory footprint with a focused set of analog and digital peripherals, making it well suited for battery-powered IoT endpoints, RF modules and portable detectors. Its integrated power management features and documented low-power modes help designers optimize energy consumption while maintaining fast wake-up and reliable operation.

With serial interfaces, CRC integrity checks, SWD debug and on-chip RTC, the A31L222AR provides a practical platform for embedded projects that require a small package, validated low-power behavior and a clear set of peripheral capabilities from a single-vendor MCU family (A31L22x by Abov).

If you would like pricing, lead-time or a formal quotation for A31L222AR, request a quote or submit a pricing inquiry and our sales team will respond with details and availability.