A31G336RM

The A31G336RM is a 32‑bit general‑purpose microcontroller from Abov, built around an energy‑efficient ARM Cortex‑M0+ core. It combines up to 256 KB of code flash with 32 KB of SRAM, a broad set of analog and digital peripherals, and flexible power management for power‑sensitive embedded designs.

Designed for embedded systems that require USB connectivity, multiple serial interfaces and low‑power operation, the A31G336RM delivers integration and predictable performance across a 1.8 V to 5.5 V supply range and an operating temperature range of −40 °C to 85 °C.

Key Features

• Core  ARM Cortex‑M0+ 32‑bit core with clocking up to 48 MHz (also available at 32 MHz), providing efficient control and deterministic interrupt handling via NVIC with 31 interrupt sources.
• Memory  256 KB code Flash memory with ECC and read protection plus 32 KB on‑chip SRAM for application and data storage.
• Power and Reset  Operates from 1.8 V to 5.5 V with RUN, SLEEP and DEEP‑SLEEP modes, Low Voltage Detection, Low Voltage Reset (LVR) and Low Voltage Indicator (LVI) for robust power management.
• Timers & Watchdog  Multiple timers including six 16‑bit channels and two 32‑bit timers with PWM, capture and one‑shot modes, plus a 24‑bit watchdog timer with selectable dividers.
• Analog  12‑bit ADC with up to 16 analog input channels and 1 MSps conversion capability, plus two on‑chip comparators and an internal temperature sensor.
• Connectivity  Rich serial interfaces: up to 4 USARTs, 2 SPIs, 3 I2C ports and USB 2.0 Full Speed (crystal‑less operation supported by clock management unit).
• DMA & CRC  Four DMA channels supporting 8/16/32‑bit transfers across 19 internal peripherals, and a CRC calculation unit supporting CRC‑CCITT, CRC‑16 and user‑defined CRC modes.
• GPIO & Interrupts  Up to 53 general‑purpose I/O pins, all mappable to external interrupt vectors with configurable drive strength.
• Package & Temperature  Available in a 64‑LQFP package (12×12 mm, 0.65 mm pitch) and specified for operation from −40 °C to 85 °C.

Typical Applications

• USB‑enabled peripherals  Device designs that require USB Full Speed connectivity with on‑chip packet buffer SRAM and endpoint support.
• Sensor and data acquisition  Multi‑channel 12‑bit ADC, comparators and DMA make the part suitable for collecting and preprocessing sensor data.
• Battery‑powered and portable devices  Wide supply range (1.8–5.5 V) and SLEEP/DEEP‑SLEEP modes help extend battery life in portable applications.
• Embedded control and HMI  Multiple USART/I2C/SPI interfaces and timers enable motor drivers, user interfaces and control tasks in compact systems.

Unique Advantages

• Energy‑efficient 32‑bit processing: ARM Cortex‑M0+ core delivers a balance of performance and low power consumption for control and real‑time tasks.
• High integration reduces BOM: On‑chip USB Full Speed, multiple serial interfaces, ADC, comparators, DMA and CRC minimize external components.
• Robust memory features: 256 KB code Flash with ECC and read protection supports reliable code storage and application security.
• Flexible power and clocking: Operation across 1.8–5.5 V plus internal/external oscillator options and clock monitoring enable varied supply and clock architectures.
• Deterministic DMA and peripheral routing: Four DMA channels working with 19 peripherals accelerate data movement while freeing CPU cycles.
• Package and I/O density: 53 configurable I/O pins in a 64‑LQFP package provide ample connectivity for complex interfaces and peripheral control.

Why Choose A31G336RM?

The A31G336RM positions itself as a highly integrated, reliable microcontroller for embedded designs that require USB connectivity, multiple serial interfaces and flexible analog inputs while operating across a wide supply range. Its Cortex‑M0+ core combined with ECC‑protected flash and DMA support provides a solid foundation for firmware development and real‑time control.

This device is well suited to engineering teams building compact, power‑sensitive products that benefit from reduced external components and clear documentation. The A31G336RM’s combination of memory, peripherals and power management supports scalable designs and long‑term product deployment.

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