A31M223GR2N

The A31M223GR2N is a 32-bit microcontroller based on the Arm Cortex-M0+ core, delivering up to 80 MHz core speed and designed for electrical appliance applications that require a balance of performance and low-power operation. It integrates code flash, SRAM and a rich set of on-chip peripherals—making it suitable for motor control, sensor acquisition and control-plane tasks in embedded appliances.

This device provides up to 64 Kbytes of Flash, 8 Kbytes of SRAM, multiple timers, ADC, DMA, watchdog and CRC functions in a compact 28-pin TSSOP package, and operates from 2.7 V to 5.5 V over an extended temperature range of -40 °C to +105 °C.

Key Features

• Core  Arm Cortex-M0+ 32-bit CPU with up to 80 MHz operating frequency and cache buffer (flash accelerator) support for efficient code execution.
• Memory  64 Kbytes of on-chip Flash (code memory) and 8 Kbytes of SRAM for application and data storage.
• Power & Clock  Operates from 2.7 V to 5.5 V with POR/LVR/LVI reset support and low-power SLEEP and DEEP-SLEEP modes. Multiple oscillator options include internal HSI/LSI and support for external HSE/LSE with an on-chip PLL up to 80 MHz.
• Timers & PWM  Four 16-bit timers, one 32-bit timer, a 3-phase MPWM generator with 16-bit up/down counters and multiple PWM channels for motor and power control applications.
• Analog & Data Conversion  12-bit A/D converter with 10 analog input channels, adjustable sample and hold, and multiple conversion modes for flexible signal acquisition. Integrated comparators and two on-chip operational amplifiers support analog signal conditioning.
• Interfaces & Connectivity  Serial interfaces include UART (two asynchronous ports) and SPI (one synchronous port) for communication with peripherals and modules.
• DMA & System Peripherals  Four-channel DMA supporting 8-/16-/32-bit transfers and compatibility with multiple peripherals to offload CPU and improve throughput.
• System Reliability  Integrated watchdog timer (32-bit down-count with reset and interrupt options), CRC calculation unit with multiple CRC modes and POR for robust system operation.
• Package & I/O  Surface-mount 28-TSSOP (173 mil) package with 26 available I/O pins, suitable for compact board designs.
• Temperature Range  Industrial-grade operation from -40 °C to +105 °C for use in a wide variety of appliance environments.

Typical Applications

• Home Appliances  Control of motors and user interfaces in refrigerators, washing machines and dishwashers using integrated MPWM, timers and ADC for sensor feedback.
• Motor Control  3-phase PWM and fast ADC paths enable precise motor drive control and closed-loop feedback in pumps and fans.
• Sensor Acquisition & Control  Multi-channel 12-bit ADC, comparators and op-amps provide analog front-end capabilities for temperature, current and position sensing.
• Embedded Control Systems  General-purpose control tasks that require deterministic timing, low-power modes and multiple serial interfaces for peripheral connectivity.

Unique Advantages

• Balanced performance and efficiency: 80 MHz Cortex-M0+ core with flash accelerator provides responsive control while supporting low-power modes for energy-conscious designs.
• Integrated motor-control peripherals: 3-phase MPWM, multiple timers and ADC trigger sources reduce external component count for motor-drive systems.
• Rich analog integration: 12-bit ADC, comparators and two op-amps simplify sensor conditioning and measurement without large analog front-end BOM.
• Flexible connectivity: UART and SPI ports enable straightforward interfacing to displays, sensors and communication modules.
• System robustness features: On-chip watchdog, POR and CRC unit provide reset protection and data integrity checks to enhance reliability.
• Compact package footprint: 28-TSSOP mounting with 26 I/O pins supports space-constrained PCB layouts common in appliance controllers.

Why Choose A31M223GR2N?

The A31M223GR2N positions itself as a compact, appliance-oriented microcontroller combining a capable 32-bit Cortex-M0+ core with comprehensive on-chip peripherals required for motor control, sensor interfacing and general embedded control. Its mix of memory, timers, ADC channels, MPWM and communications interfaces allows designers to implement feature-rich systems while minimizing external components.

This device is well suited for engineering designs that demand a reliable, integrated MCU solution operating across a wide supply and temperature range. The combination of performance, analog capability and system peripherals provides a scalable platform for appliance and embedded control applications.

Request a quote or submit an inquiry to receive pricing and availability information for the A31M223GR2N and to discuss how this microcontroller can fit your design requirements.