A31G112KU

The A31G112KU is a cost-effective, feature-rich microcontroller based on the ARM Cortex-M0+ core. It combines a 32-bit core running at up to 40 MHz with integrated peripherals for display, analog conversion, motor/PWM control and serial communications.

Designed for embedded control in consumer and industrial applications, the A31G112KU delivers compact packaging, a broad supply range (1.8 V to 5.5 V) and low-power modes (sleep and deep sleep) for efficient system-level designs.

Key Features

• Core & performance ARM Cortex-M0+ 32-bit core running up to 40 MHz for deterministic embedded control and efficient interrupt handling.
• Memory 32 Kbytes of on-chip Flash and 4 Kbytes of SRAM provide code and data storage for mid-size firmware and runtime stacks.
• Power and clocking Wide VCC/VDD range (1.8–5.5 V), internal RC oscillator plus support for external oscillator, and selectable sleep/deep-sleep modes to optimize energy use.
• Timers & PWM Multiple timers including 16-bit and 32-bit timers and 16-bit 3-phase PWM support for motor control, timing and PWM-driven power stages.
• Analog 12-bit A/D converter with 5 channels (50 ksps listed in device family documentation) for sensor interfacing and analog measurement.
• Connectivity Dual USART/UART interfaces, dual I2C and SPI for flexible peripheral interfacing.
• Display & GPIO LCD driver/controller support (device family supports up to 8 × 23 segments) and high-current LED drive capability; 29 general-purpose I/Os available on the 32-QFN package.
• System reliability Integrated watchdog timer, POR, LVR/LVI, clock monitoring and a 16-bit CRC (CRC-16/CCITT) generator to assist in robust system design.
• Package & temperature Surface-mount 32-QFN (5 × 5 × 0.5 mm) package and industrial operating range (–40 °C to +105 °C) for compact, rugged deployments.

Typical Applications

• Home Appliances – Control panels, display driving and motor/PWM functions for appliance control and user interfaces.
• Smart Door Locks – Sensor input, serial communications and low-power sleep modes for battery-powered access control devices.
• Air Cleaners – Sensor interfacing, motor control and display management for environmental control systems.
• General-Purpose Embedded Control – Mid-range embedded systems requiring integrated analog, timing and serial peripherals in a small package.

Unique Advantages

• Highly integrated peripheral set: On-chip ADC, LCD driver, multiple serial interfaces and PWM/timer resources reduce external BOM and simplify board design.
• Flexible power and clock options: 1.8–5.5 V supply range with internal and external oscillator support enables diverse power architectures and clock sources.
• Compact industrial-grade package: 32-QFN 5×5 mm footprint with –40 °C to +105 °C rating enables space-constrained, rugged applications.
• Display and LED drive capability: Integrated LCD controller and high-current sink capability on dedicated pins simplify implementation of user interfaces and indicator lighting.
• Built-in system protection: Watchdog, POR, LVR/LVI and CRC generation help improve system reliability and support safe recovery from fault conditions.
• Balanced memory and performance: 32 KB Flash and 4 KB SRAM paired with a 40 MHz Cortex-M0+ core support compact firmware and responsive control loops.

Why Choose A31G112KU?

The A31G112KU positions itself as a versatile, integrated microcontroller option for designers who need a compact, industrial-temperature device with display, analog and robust control peripherals. Its combination of a 32-bit Cortex-M0+ core, 32 KB Flash, multiple serial interfaces and dedicated display/LED drive features make it suitable for consumer appliances, access control, environmental products and other embedded systems.

With a small 32-QFN package, broad supply voltage range and proven system features such as watchdog, POR and CRC, the A31G112KU supports reliable, space-efficient designs that balance performance and system integration.

Request a quote or submit a quotation inquiry to our sales team to discuss availability and pricing for the A31G112KU.