A31G112LU

The A31G112LU is an ARM Cortex-M0+ microcontroller delivering a balanced mix of processing, analog, timing and display peripherals in a compact 24‑QFN package. It integrates up to 32 Kbytes of Flash and 4 Kbytes of SRAM, runs at up to 40 MHz, and supports a wide supply voltage range (1.8 V to 5.5 V) for flexible system-level design.

Designed for consumer and general-purpose embedded systems, the device targets applications requiring integrated ADC, multiple timers and PWM channels, display drive capability and standard serial interfaces while offering low-power sleep and deep-sleep modes for energy-efficient operation.

Key Features

• Core & Performance — ARM Cortex‑M0+ 32‑bit core running up to 40 MHz, suitable for control, UI and sensor-management tasks.
• Memory — 32 Kbytes of on‑chip Flash and 4 Kbytes of SRAM for program and data storage in compact embedded designs.
• Power — Wide operating voltage 1.8 V to 5.5 V and support for sleep and deep sleep modes to optimize power consumption across use cases.
• Timers & PWM — Multi-purpose timers including 16‑bit timers, a 16‑bit timer with 6‑channel PWM and 32‑bit timers; supports 3‑phase 16‑bit PWM for motor and power-control tasks.
• Analog — 12‑bit ADC with 4 channels for accurate sensor interfacing and signal acquisition.
• Communications — Multiple serial interfaces including I2C, SPI and UART/USART for flexible peripheral connectivity and peripheral expansion.
• Display & LED Drive — Integrated LCD driver/controller and high‑current LED port capability (max. 120 mA sink across PD0–PD5) for user interfaces and status indicators.
• System Reliability — On‑chip CRC‑16/CCITT generator, watchdog timer, POR (power-on reset), LVR/LVI and clock monitoring to improve robustness in embedded systems.
• Clocking & Debug — Internal RC oscillator plus external clock support and SWD debug interface for development and production debug flow.
• Package & Temperature — 24‑QFN (4 × 4 mm, 0.5 mm pitch) surface‑mount package with operating range down to −40 °C up to +105 °C for industrial applications.

Typical Applications

• Home Appliances — Control of UI, sensor inputs and motor drive using integrated timers, PWM and ADC channels.
• Smart Door Locks — Manage user interfaces, low‑power wake/sleep sequences and secure communications with serial interfaces and watchdog protection.
• Air Cleaners — Sensor acquisition, fan motor control and display management using ADC inputs, 3‑phase PWM and LCD/LED drivers.
• General Purpose Embedded Systems — Compact control nodes and sensor hubs that require mixed‑signal peripherals, multiple timers and flexible communications.

Unique Advantages

• Highly integrated peripherals: Combines ADC, multiple timer types, PWM channels, display drivers and CRC logic to reduce BOM and simplify board design.
• Wide voltage tolerance: 1.8 V to 5.5 V supply range enables direct interfacing with a variety of sensors, actuators and power rails.
• Compact package with ample I/O: 24‑QFN (4×4 mm) footprint with 21 I/Os provides a small form factor without sacrificing connectivity.
• Robust system features: Hardware CRC, watchdog timer, POR and voltage monitoring improve reliability in continuous‑operation environments.
• Display and LED support: Built‑in LCD controller and high‑current LED ports simplify implementation of user interfaces and status indicators.
• Development and production readiness: SWD debug interface and ISP-capable USART support accelerate firmware development and field programming.

Why Choose A31G112LU?

The A31G112LU positions itself as a compact, well‑rounded microcontroller for designers who need a balance of processing, mixed‑signal I/O and display/LED drive in a small package. Its ARM Cortex‑M0+ core, 32 Kbytes Flash and 4 Kbytes SRAM, combined with multiple timers, a 12‑bit ADC and serial interfaces, make it suitable for consumer and general‑purpose embedded designs that demand integration and predictable performance.

With a broad supply voltage range, industrial temperature rating to +105 °C and on‑chip reliability features such as CRC, POR, LVR/LVI and watchdog, the A31G112LU supports long‑term deployment in products where robustness and compact design are priorities.

Request a quote or contact the vendor to discuss volume pricing, lead times and technical integration support for the A31G112LU.