A31G226RMN

The A31G226RMN is a 32-bit microcontroller from Abov’s A31G22x series, built around a high-performance ARM Cortex-M0+ core for appliance main controller applications. It combines a 48 MHz Cortex-M0+ core with 256 Kbytes of flash, 20 Kbytes of SRAM and a broad set of peripherals to support control, sensing and user-interface functions in embedded appliances.

Designed for flexible system integration, the device supports a wide supply range (1.8 V to 5.5 V), on-chip data flash, ADC/DAC channels, DMA and a comprehensive set of serial interfaces, enabling compact, feature-rich appliance designs across commercial temperature ranges.

Key Features

• Core — ARM Cortex-M0+ 32-bit core with up to 48 MHz operating speed for responsive control and deterministic interrupt handling.
• Memory — 256 Kbytes of code flash, 32 Kbytes data flash and 20 Kbytes SRAM. Memory bank swap and read-protection features provide flexible code layout and basic security options.
• Power and Clocks — Wide operating voltage from 1.8 V to 5.5 V; supports internal and external oscillators and PLL for clock management and power modes including RUN, SLEEP and DEEP-SLEEP.
• Timers & PWM — Multiple timers including seven 16-bit general-purpose timers, two 32-bit timers, watchdog and watch timer plus 16-bit PWM with three channels for motor and power control tasks.
• Analog — 12-bit A/D converter capable of up to 18 channels and 1.0 Msps conversion rate, plus a 12-bit D/A converter for analog output and two comparators for threshold detection.
• Connectivity — Rich serial interfaces including I2C, SPI, UART and USART channels to support sensor networks, display controllers and peripheral bridges.
• DMA & CRC — 8-channel DMA for efficient data transfers and peripheral offload; CRC generator supporting CRC-7/8/16/32 for data integrity checks.
• Display & I/O — Integrated LCD driver (8×34 support) and high-current LED port drivers; up to 59 general-purpose I/O pins for flexible panel and sensor interfacing.
• System Reliability & Safety — IEC60730 qualification and on-chip low-voltage detection, reset and monitoring features to meet appliance safety monitoring requirements.
• Development Support — SWD debug interface and nested vectored interrupt controller (NVIC) to simplify development and interrupt management.
• Package & Temperature — Supplied in a 64-LQFP package with an operating temperature range of −40 °C to +85 °C for commercial-grade appliance environments.

Typical Applications

• Home Appliances — Main controller for appliances such as washers, dryers and ovens where integrated display, sensor input and motor timing are required.
• HVAC and Climate Control — Control of fan motors, temperature sensing and user interface management using the ADC, PWM and LCD/LED drivers.
• Consumer Appliances — Embedded control for kitchen and household devices needing compact memory, peripheral integration and multiple serial interfaces.
• Industrial Control Panels — Local control and human-machine interface (HMI) tasks requiring reliable I/O, LCD driving and system monitoring in commercial temperature ranges.

Unique Advantages

• Integrated analog and control peripherals: 12-bit ADC with up to 18 channels, 12-bit DAC and PWM channels provide the mixed-signal capability needed for sensor acquisition and actuator control without external converters.
• High on-chip memory density: 256 Kbytes flash plus 32 Kbytes data flash and 20 Kbytes SRAM reduce external memory needs and simplify firmware partitioning for feature-rich appliances.
• Comprehensive peripheral set: Multiple UART/USART, I2C and SPI channels together with DMA and CRC accelerate data flow and provide robust communications and integrity checking.
• Flexible power and clocking: Broad 1.8 V–5.5 V range with internal/external oscillator support and PLL enables use in varied supply environments and power modes.
• Appliance-grade reliability: IEC60730 qualification plus onboard low-voltage detection, reset sources and watchdog timers support safety monitoring and reliable operation.
• Compact package with abundant I/O: 64-LQFP footprint with 59 I/O pins and built-in LCD/LED drivers helps reduce PCB area and BOM for space-constrained designs.

Why Choose A31G226RMN?

The A31G226RMN strikes a balance of processing performance, on-chip memory and peripheral integration tailored for appliance main controllers and similar embedded systems. Its Cortex-M0+ core at up to 48 MHz combined with extensive analog, timing and serial interfaces enables consolidated designs that minimize external components.

Engineers building mid-complexity appliance and consumer designs will find the device well suited to tasks that require reliable system monitoring, user interfaces and mixed-signal control, while the wide supply range and IEC60730 qualification support robust operation across deployment environments.

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