A31G224MM2N

The A31G224MM2N is a 32-bit microcontroller based on an ARM Cortex-M0+ core running up to 48 MHz, engineered as the main controller for consumer and appliance applications. It combines a high-performance core with a broad set of on-chip peripherals, ample memory, and industrial operating ranges to support complex sensor systems, user interfaces and motor-control functions.

Designed for integration and reliability, the device delivers code and data flash, 20 KB SRAM, multi-channel ADC/DAC, rich serial connectivity and dedicated drivers for displays and LED/high-current ports—making it suitable for embedded appliance and consumer-electronics designs.

Key Features

• Core ARM Cortex-M0+ 32-bit core with clock speeds up to 48 MHz for responsive control and deterministic interrupt handling.
• Memory 128 KB code flash plus 32 KB data flash and 20 KB SRAM. Supports memory bank swap and read-protection features for secure firmware management.
• Analog and Data Converters 12-bit A/D converter (up to 1.0 Msps) with up to 18 input channels and a 12-bit D/A converter (1 channel) for precision sensor interfacing and analog output.
• Timers, PWM and Motor Support Multiple timers including 16-bit and 32-bit channels, 16-bit PWM and 3-phase complementary PWM generators for advanced motor and power control.
• Connectivity Multiple serial interfaces: 3 I2C channels, 2 SPI channels, 2 UARTs and 4 USARTs to connect sensors, peripherals and communication modules.
• DMA and CRC 8-channel DMA for efficient data transfer and a multi-width CRC generator (7/8/16/32-bit) for data integrity checks.
• Display and GPIO Integrated LCD driver (configurable COM × SEG), sink-type high-current output port and up to 75 I/O ports for user interfaces and external devices.
• System Management and Safety Low-voltage detection, nested vector interrupt controller (NVIC) with 37 interrupt sources, watchdog and watch timers, plus IEC60730 qualification for appliance safety-oriented designs.
• Power and Clock Wide operating voltage range from 1.8 V to 5.5 V with internal and external oscillator support, PLL, and multiple clock monitoring options.
• Package and Environmental Available in an 80-pin LQFP package with an operating temperature range of −40 °C to +105 °C for industrial-grade embedded systems.
• Development and Debug SWD debug interface for firmware development and debugging.

Typical Applications

• Home Appliances — Central control for washing machines, refrigerators and other appliances where motor control, user interface and sensor processing are required.
• Consumer Electronics — Sensor interfacing, display control and I/O management in consumer devices that demand integrated analog and digital peripherals.
• HVAC and Building Controls — Temperature sensing, ADC-based measurements and robust operating range support environmental control systems.
• Motor and Power Control — 3-phase complementary PWM and multiple timers suitable for motor drive and power-stage control in compact embedded designs.

Unique Advantages

• Highly integrated peripheral set: On-chip ADC (12-bit, 18 channels), DAC, multiple UART/USART/I2C/SPI ports and LCD/LED drivers reduce external components and simplify BOM.
• Memory flexibility and security: 128 KB code flash with 32 KB data flash, memory bank swap and read-protection support secure firmware deployment and in-field updates.
• Designed for embedded appliance reliability: IEC60730 qualification, watchdog timers and voltage monitoring help meet product safety and reliability requirements.
• Wide voltage and temperature range: 1.8–5.5 V operation and −40 °C to +105 °C support diverse power systems and industrial-grade operating environments.
• Real-time control capability: Cortex-M0+ at up to 48 MHz plus DMA and multi-channel timers enable responsive control loops and efficient data handling.
• Compact footprint with extensive I/O: 80-LQFP package with up to 75 I/O ports provides a balance of density and connectivity for board-level designs.

Why Choose A31G224MM2N?

The A31G224MM2N is positioned for designers seeking a balance of processing performance, integrated peripherals and appliance-focused reliability. With a Cortex-M0+ core, multi-kilobyte flash and data flash, comprehensive analog features and dedicated display and driver support, it streamlines designs that require sensor aggregation, user interfaces and motor control in a single MCU.

This device suits embedded engineers and product teams building consumer and appliance systems that need scalable firmware, secure memory options and robust system monitoring across a wide supply voltage and temperature range.

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