A31G123KN

The A31G123KN is a 32-bit microcontroller based on the ARM Cortex-M0+ core, offering 64 Kbytes of Flash and 6 Kbytes of SRAM with a maximum operating frequency of 40 MHz. Designed for embedded control and appliance applications, it combines a broad voltage range (1.8 V to 5.5 V), mixed-signal peripherals and display-driving capability in a compact 32‑pin LQFP (7×7‑0.8 mm) package.

Typical use cases include smart home and appliance control where integration of timers, ADC, display and communications reduces board-level complexity while providing industrial-temperature operation to −40 °C to +105 °C.

Key Features

• Core  ARM Cortex-M0+ 32‑bit processor running up to 40 MHz for deterministic embedded control and interrupt handling.
• Memory  64 Kbytes of on‑chip Flash and 6 Kbytes of SRAM for application code and runtime data.
• Power and Voltage  Wide operating supply range from 1.8 V to 5.5 V and on‑chip LDO support to simplify power design.
• Timers and PWM  Multiple timers including 16‑bit and 32‑bit timers, a 16‑bit timer with 6‑channel PWM and support for 3‑phase 16‑bit PWM for motor or actuator control.
• Analog  12‑bit A/D converter with channel configuration specific to the 32‑pin package (see device selection), suitable for sensor interfacing and analog monitoring.
• Interfaces  On‑chip serial connectivity including I2C, SPI and UART/USART to enable peripheral and system communication.
• Display and LED Support  Integrated LCD driver/controller plus LED high‑current port drive capability (up to specified sink current on port pins) to support user interfaces and status indicators.
• System Reliability  Built‑in CRC‑16/CRC‑CCITT generator, watchdog timer, power‑on reset (POR), low‑voltage reset (LVR) and low‑voltage interrupt (LVI) for system integrity and fault recovery.
• Clocking and Low Power  Internal RC oscillator plus support for external oscillators and power modes including sleep and deep sleep to reduce standby current.
• Package and I/O  32‑pin LQFP (7×7‑0.8 mm) package with 29 general purpose I/O pins, enabling compact board layouts.
• Temperature Range  Industrial grade operation from −40 °C to +105 °C for demanding environmental conditions.

Typical Applications

• Smart door locks  Microcontroller control of actuation, user interface and sensor inputs, leveraging timers, PWM and integrated communications.
• Air cleaners  Control of motors, fan speed and sensor processing using PWM, ADC inputs and multiple timers.
• General purpose appliance control  Integrated display driving, LED control and serial interfaces simplify user panels and networked control for household devices.

Unique Advantages

• Highly integrated peripherals: On‑chip ADC, LCD driver, LED high‑current ports, CRC and multiple timers reduce external component count and simplify BOMs.
• Flexible power envelope: 1.8 V to 5.5 V supply range and on‑chip LDO support enable diverse power architectures and battery‑powered designs.
• Industrial temperature capability: Specified operation from −40 °C to +105 °C for reliable performance in harsh environments.
• Compact package with ample I/O: 32‑pin LQFP with 29 GPIOs provides a small footprint without sacrificing interface availability.
• Application‑oriented timer and PWM features: Multiple 16‑bit and 32‑bit timers plus 3‑phase 16‑bit PWM support motor and actuator control use cases directly on‑chip.
• Memory and performance balance: 64 KB Flash and 6 KB SRAM combined with a Cortex‑M0+ core at up to 40 MHz for control applications that require modest code space and deterministic execution.

Why Choose A31G123KN?

The A31G123KN positions itself as a compact, feature‑rich microcontroller for embedded appliance and control applications that demand mixed‑signal integration, display support and reliable operation across a wide voltage and temperature range. Its Cortex‑M0+ core, ample on‑chip memory and comprehensive peripheral set make it suitable for designs that need a balance of performance, integration and low‑power modes.

As part of the A31G12x family, the A31G123KN provides designers with package and peripheral options to right‑size solutions for specific product requirements while maintaining consistent architecture and development flow across the series.

Request a quote or submit a sales inquiry to receive pricing, availability and further technical details for the A31G123KN.