A31G123SN

The A31G123SN is a 32-bit microcontroller based on the ARM Cortex-M0+ core, offering 64 Kbytes of Flash and 6 Kbytes of SRAM. Designed for embedded control applications, it combines a 40 MHz core with a broad set of on-chip peripherals and power-management features to simplify control, sensing and user-interface designs.

Key Features

• Core – ARM Cortex-M0+ 32-bit core running up to 40 MHz for efficientcontrol and deterministic real-time performance.
• Memory – 64 Kbytes of on-chip Flash program memory and 6 Kbytes of SRAM to support application code and runtime data.
• Power and Voltage – Wide supply range of 1.8–5.5 V with integrated power management including POR, LVR, LVI and an internal RC oscillator to support robust start-up and simplified power design.
• Timers and PWM – Multiple 16-bit and 32-bit timers plus 16-bit PWM (including 3-phase PWM and 6-channel PWM) for motor control, power conversion and precise timing tasks.
• Analog – 12-bit ADC with 9 channels for multi-channel sensor acquisition and analog monitoring.
• Interfaces – On-chip communication peripherals including I2C, UART and USART to support sensor, display and host communications.
• System Reliability – CRC-16/CCITT generator and watchdog timer (WDT) to support data integrity checks and system supervision.
• Low-Power Modes – Sleep and deep sleep modes for reduced power consumption in battery-powered or energy-conscious systems.
• Display and LED Control – Integrated LCD driver and LED driver for user-interface and status-indication implementations.
• Package and Temperature – Available in a 44-LQFP (10 × 10 mm, 0.8 mm pitch) package with an operating temperature range of −40 to 105 °C and 41 user I/O pins.

Typical Applications

• Motor Control – 3-phase PWM and multiple 16-bit timers enable embedded motor-drive and fan-control functions within appliance and industrial applications.
• Sensor and Data Acquisition – The 12-bit, 9-channel ADC combined with I2C and UART/USART support multi-sensor interfacing and aggregated data processing.
• User Interface Control – Integrated LCD and LED drivers alongside serial interfaces for direct control of displays and user input/output subsystems.
• Embedded System Control – Low-power modes, watchdog and CRC support make the device suitable for general embedded control tasks requiring reliability and energy efficiency.

Unique Advantages

• Highly integrated peripheral set: Timers, PWM, ADC, LCD driver, LED driver and communication interfaces reduce external components and simplify BOM.
• Wide supply flexibility: Operates from 1.8 V to 5.5 V, enabling compatibility with a broad range of power architectures and battery-powered designs.
• Compact surface-mount package: 44-LQFP (10×10 mm) provides a small footprint while offering 41 I/O pins for flexible board-level integration.
• Built-in system safety features: POR, LVR, LVI, watchdog and CRC support improve system robustness and operational reliability.
• Balanced performance and memory: 32-bit Cortex-M0+ at 40 MHz with 64 Kbytes Flash and 6 Kbytes SRAM delivers adequate compute and storage for typical embedded control firmware.

Why Choose A31G123SN?

The A31G123SN positions itself as a balanced, integrated microcontroller for embedded control tasks where a compact footprint, comprehensive on-chip peripherals and flexible power support are required. Its Cortex-M0+ core, combined with dedicated PWM, ADC and display drivers, lets designers consolidate functionality and streamline board-level design.

This device is well suited for developers and OEMs building control and interface systems that need reliable operation across a wide temperature and voltage range. With a focused feature set from Abov’s A31G12x series, the A31G123SN supports scalable designs that benefit from on-chip integration and built-in system management features.

Request a quote or contact sales to discuss pricing, lead times and integration support for the A31G123SN. Our team can provide details to help you evaluate the device for your next embedded control design.