A31G123ML

The A31G123ML is an ARM Cortex-M0+ microcontroller in the A31G12x series, offering a balanced mix of performance and peripheral integration for embedded control applications. With up to 64 Kbytes of Flash, 6 Kbytes of SRAM, a 40 MHz core and an extended operating range, it targets smart appliances, home automation and general-purpose control designs that require integrated analog, display and communication peripherals.

Key Features

• Core  ARM Cortex-M0+ 32-bit core running up to 40 MHz for efficient control and deterministic interrupt handling.
• Memory  64 Kbytes of on‑chip Flash and 6 Kbytes of SRAM for application code and runtime data storage.
• Voltage & Temperature  Wide supply range of 1.8–5.5 V and operating temperature from −40 to 105 °C to support battery and industrial systems.
• Timers & PWM  Ten general-purpose timers including 16-bit and 32-bit timers, 16-bit timer with 6-channel PWMs, and capture modes for motor and timing control.
• Analog  12-bit ADC (50 ksps) with 14 input channels for sensor readout and precision measurement.
• Interfaces & Communication  Multiple serial ports including 4×USART (UART + SPI), 3×I2C and 2×UART for robust peripheral and network connectivity.
• Display Support  LCD driver/controller supporting up to 8×39 segments with resistor bias, duty selection and 16-step contrast control for embedded user interfaces.
• System Reliability  On-chip CRC generator (CRC-16/CCITT), 24-bit watchdog timer, POR, LVR and LVI functions to improve system integrity and safety.
• Clock & Oscillators  Internal RC oscillator plus support for external clock sources; includes clock monitoring for system stability.
• GPIO & Drive Capability  77 general-purpose I/Os and up to 120 mA sink current capability across 8 dedicated pins (PD0–PD7) for LED/indicator drive.
• Debug & Programming  SWD debug interface and support for USART (UART + SPI) ISP to simplify development and in-field programming.
• Package  80-LQFP (12 × 12 × 0.5 mm) package option for board-level integration and thermal management.
• Power Modes  Supports sleep and deep-sleep low-power modes to reduce energy consumption in duty-cycled applications.

Typical Applications

• Smart Door Lock  Integrated ADC, timers, serial interfaces and LCD driver make the A31G123ML suitable for secure access control, user interface handling and sensor integration.
• Air Cleaner  PWM-capable timers, ADC channels for air-quality sensors, and multiple comms ports support fan/motor control and sensor aggregation in appliance designs.
• General-Purpose Embedded Control  A broad peripheral set and industrial temperature rating enable diverse control tasks—user interfaces, sensor processing and communication—in both commercial and industrial applications.

Unique Advantages

• Highly integrated peripheral set: Multiple USART/UART, I2C, ADC and LCD controller reduce external components and simplify PCB designs.
• Flexible power and temperature support: 1.8–5.5 V operation and −40 to 105 °C rating accommodate battery-powered and industrial environments.
• Display and drive capability: On-chip LCD controller plus dedicated pins with high sink current support richer user interfaces and indicator driving without external drivers.
• Robust system features: Built-in CRC, watchdog, POR/LVR/LVI and clock monitoring enhance reliability and help detect and recover from faults.
• Scalable family options: Part of the A31G12x series with multiple memory and package variants, enabling easy scaling across product lines.
• Developer-friendly: SWD debug and ISP via USART simplify firmware development and in-field updates.

Why Choose A31G123ML?

The A31G123ML delivers a practical blend of processing capability, peripheral integration and industrial-grade operating conditions for embedded control designs. Its combination of a Cortex-M0+ core, extensive serial interfaces, 12-bit ADC, LCD driver and robust system monitors makes it well suited for appliance control, home automation and other applications that demand integrated I/O and display support.

As part of the A31G12x series, the A31G123ML offers straightforward scalability across memory and package options while providing on-chip features that reduce BOM and simplify development. Its extended voltage and temperature ranges and integrated reliability features deliver long-term value for production designs requiring consistent operation in varied environments.

Request a quote or submit an inquiry to the sales team for pricing, lead times and volume options for the A31G123ML.