A31G324CU

The A31G324CU is a 32-bit microcontroller built around an ARM Cortex-M0+ core, optimized for main control in a range of appliances and embedded systems. It combines a 48 MHz core, 128 Kbytes of on-chip flash and 16 Kbytes of SRAM with an extensive set of analog and digital peripherals, including Full-Speed USB, multiple serial interfaces and integrated A/D and D/A converters.

Designed for embedded control tasks, the A31G324CU delivers a tightly integrated platform for motor control, sensor interfacing and USB-enabled device functionality while supporting operation across a wide supply voltage range and commercial temperature window.

Key Features

• Core  ARM Cortex-M0+ 32-bit core running at 48 MHz, providing efficient control and real-time response for appliance and embedded applications.
• Memory  128 Kbytes on-chip flash program memory and 16 Kbytes SRAM for application and data storage.
• Voltage & Temperature  Wide supply range of 1.8–5.5 V and commercial operating temperature from −40 °C to +85 °C for robust deployment in diverse environments.
• Timers & Motor Control  Comprehensive timer set including six 16-bit timers, two 32-bit timers, a 16-bit 3-phase PWM timer and additional capture/PWM resources for motor and motion control tasks.
• Analog  12-bit A/D converter and 10-bit D/A converter paired with two comparators and an on-chip temperature sensor to support sensor interfacing and analog control loops.
• Connectivity  Rich serial interfaces: EBI, I2C, SPI, USART and USB Full Speed for flexible peripheral and host connectivity.
• System Reliability  Built-in CRC generator, watchdog timers (WDT and Window WDT), nested vector interrupt controller (NVIC) and multiple reset sources to support dependable system operation.
• DMA & RTC  Four-channel DMA and integrated real-time clock for efficient data movement and timekeeping without CPU overhead.
• Debug & Development  SWD debug interface and comprehensive documentation available for development and system integration.
• Package & I/O  Surface-mount 48‑QFN package with 37 I/O pins, suitable for compact designs.

Typical Applications

• Home Appliances  Main control for appliances where integrated timers, ADCs and USB connectivity streamline user interfaces and control logic.
• Motor Control  3-phase PWM timer and multiple capture/PWM channels enable motor drive and speed control functions in compact motor systems.
• Sensor Hubs & IoT End Nodes  12-bit ADC, comparators, temperature sensor and multiple serial buses (I2C, SPI, USART) for aggregating and preprocessing sensor data.
• USB-Enabled Devices  Full-Speed USB support for connectivity to hosts or peripherals in consumer and appliance applications.

Unique Advantages

• Highly integrated control platform: 128 Kbytes flash, 16 Kbytes SRAM and a broad peripheral set reduce external components and simplify BOM.
• Flexible power and clocking: Supports 1.8–5.5 V supplies and multiple power modes (RUN, SLEEP, DEEP SLEEP, BACKUP POWER) for adaptable power management strategies.
• Real-time deterministic control: 48 MHz Cortex-M0+ core combined with extensive timer resources and DMA supports responsive control loops and efficient data movement.
• Broad connectivity: EBI, I2C, SPI, USART and USB Full Speed enable diverse peripheral integration and external-memory interfacing when needed.
• Designed for reliable operation: NVIC with 32 interrupt sources, watchdogs, CRC generation and multiple reset sources help maintain system integrity.
• Compact package footprint: 48‑QFN surface-mount package with 37 GPIOs for space-constrained designs without sacrificing I/O capability.

Why Choose A31G324CU?

The A31G324CU positions itself as a complete microcontroller solution for appliance main control and embedded applications that require a balanced mix of processing, analog conversion and peripheral connectivity. Its ARM Cortex-M0+ core, integrated USB Full Speed, and dedicated timers for 3-phase PWM make it well suited to motor control, sensor interfacing and USB-enabled products.

As a member of the A31G32x family, the device is supported by development resources including SWD debug and detailed documentation, enabling efficient integration and scalability within related designs. The combination of on-chip memory, robust peripherals and commercial-grade operating conditions delivers a practical, long-term building block for production systems.

Request a quote or submit an inquiry for pricing and lead-time information to move your design forward with the A31G324CU microcontroller.