A31L222FR

The A31L222FR is an ultra-low power microcontroller from Abov built around a high-performance ARM Cortex‑M0+ core. It integrates up to 32 Kbytes of Flash and 4 Kbytes of SRAM along with a broad set of on‑chip peripherals to address compact, battery‑sensitive embedded designs.

Targeted at IoT, RF module and detector applications, the A31L222FR delivers a balance of processing efficiency, analog/data‑acquisition capability and system peripherals while supporting low‑voltage operation from 1.71 V to 3.6 V.

Key Features

• Core – ARM Cortex‑M0+ 32‑bit processor running up to 32 MHz for efficient control and deterministic interrupt handling.
• Memory – 32 Kbytes of internal Flash and 4 Kbytes of SRAM, plus a 32‑byte backup register for lightweight state retention.
• Power and Supply – Operates from 1.71 V to 3.6 V with multiple power modes and fast wakeup; designed for battery‑powered systems.
• Low‑Power Performance – Measured consumption includes 78 μA/MHz in RUN, 10 μA in RUN (using low‑frequency clocks), 0.99 μA in 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 of 5 μs.
• Analog and Data Conversion – 12‑bit ADC with 8 channels, 0.5 MSPS sampling, on‑chip temperature sensor and two comparators for sensor and analog front‑end tasks.
• Timers and RTC – Five general‑purpose 16‑bit timers supporting periodic, one‑shot, PWM and capture modes, plus a Real Time Clock and Calendar (RTCC) and a 24‑bit watchdog timer.
• Communications and Interfaces – Rich serial connectivity including 1 × USART, 1 × UART, 1 × LPUART, 1 × I2C (up to 1 Mbps) and 1 × SPI (up to 16 Mbps); SWD debug interface supported.
• System Reliability and Utilities – CRC (8/16/32‑bit) generator, clock monitoring, 128‑bit unique ID, POR, LVR, LVI and boot logic for robust system operation.
• Package and Environment – Available in a 20‑pin TSSOP package (A31L222FR) with 17 general purpose I/O and operating range from ‑40 °C to +105 °C.

Typical Applications

• RF Module – NB‑IoT – Low power modes, fast wakeup and compact package make the device suitable for NB‑IoT modem control and sensor aggregation.
• Detector – Gas/Alarm – Integrated ADC, comparators, RTCC and watchdog support reliable sensor monitoring and event logging in alarm systems.
• IoT / Handheld Device – Balanced CPU performance, peripheral set and ultra‑low power consumption enable responsive, battery‑operated IoT and handheld controllers.

Unique Advantages

• Highly integrated peripheral set: On‑chip ADC, comparators, timers, RTC, CRC and multiple serial interfaces reduce BOM and simplify PCB layouts.
• Ultra‑low power capabilities: Multiple sleep states with sub‑microamp and nanoamp deep‑sleep currents, plus a 5 μs wakeup time, enable long battery life with fast responsiveness.
• Flexible power range: Operation from 1.71 V to 3.6 V supports a variety of battery chemistries and system power domains.
• Compact package with sufficient I/O: 20‑pin TSSOP offers 17 GPIOs for space‑constrained designs while retaining needed interfaces.
• System integrity features: POR, LVR, LVI, clock monitoring and CRC support reliable operation in embedded environments.
• Developer‑friendly debug and ID: SWD debug interface and 128‑bit unique ID simplify development, provisioning and device management.

Why Choose A31L222FR?

The A31L222FR is positioned for designers who need a capable, low‑power 32‑bit MCU with a comprehensive set of analog and interface peripherals in a small footprint. Its Cortex‑M0+ core, combined with 32 KB Flash and 4 KB SRAM, delivers the processing headroom and memory for control, sensor acquisition and simple connectivity tasks.

With explicit low‑power characteristics, fast wakeup and integrated system features such as RTCC, watchdog and CRC, the A31L222FR is well suited to battery‑sensitive IoT endpoints, RF modules and compact sensor systems where integration, reliability and power efficiency are priorities.

Please submit a request for a quote or a product inquiry to our sales team to discuss pricing, availability and ordering for the A31L222FR.