A31G112GR

The A31G112GR is a Cortex-M0+ based microcontroller offering 32 Kbytes of Flash and 4 Kbytes of SRAM, optimized for embedded control and user-interface applications. Operating from 1.8 V to 5.5 V and capable of running at 40 MHz, it combines a compact memory footprint with a wide set of on-chip peripherals to simplify system design.

Designed for home appliances, access control and general-purpose embedded systems, the device integrates timers, multi-channel PWM, a 12‑bit ADC, display drivers and multiple serial interfaces while supporting low-power sleep and deep-sleep modes for energy-conscious designs.

Key Features

• Core & Performance  ARM Cortex‑M0+ core running at 40 MHz, delivering efficient 32‑bit processing for control and user-interface tasks.
• Memory  32 Kbytes of internal Flash and 4 Kbytes of SRAM provide on-chip code and data storage for compact embedded applications.
• Power and Supply  Wide supply range from 1.8 V to 5.5 V and on-chip LDO; integrated power management features include POR, LVR and LVI.
• Timers & PWM  Multiple 16‑bit timers plus a 16‑bit timer with 6‑channel PWM and 3‑phase PWM capability enable motor control and precise timing functions.
• Analog & Data Conversion  12‑bit A/D converter with 5 channels (up to 50 ksps) for sensor interfacing and analog measurement tasks.
• Connectivity & Communication  On-chip serial interfaces include I2C, UART and USART for peripheral and host communication.
• Display & GPIO  Integrated LCD driver/controller (supports up to 8 × 23 segments) and LED drive capabilities, including up to 120 mA sink current on six pins (PD0–PD5); 25 general-purpose I/Os.
• System Reliability  Watchdog timer (WDT), 16‑bit CRC generator (CRC‑16/CCITT) and clock monitoring functions for improved system integrity.
• Oscillators & Low Power Modes  Internal RC oscillator plus support for external clock sources; sleep and deep‑sleep modes for reduced power consumption.
• Package & Temperature  Available in a 28‑TSSOP (173 mil) surface‑mount package and specified for industrial temperature operation from −40 °C to +105 °C.

Typical Applications

• Home Appliances  Controls user interfaces, timed functions and motor/PWM control while driving displays and status LEDs.
• Smart Door Locks  Handles sensor inputs, low‑power standby, serial communications and LCD/LED status indicators in compact access control designs.
• Air Cleaners and Environmental Controls  Manages sensor data via the 12‑bit ADC, runs fan motor PWM control and provides user display and communications.
• General‑Purpose Embedded Systems  Suitable for applications requiring integrated timers, serial interfaces and display drivers in a small package.

Unique Advantages

• Highly Integrated Peripheral Set: Combines timers, multi‑channel PWM, ADC, LCD driver and serial interfaces to reduce external components and simplify BOMs.
• Flexible Power Range: 1.8 V to 5.5 V operation accommodates a variety of battery and regulator schemes for portable and mains‑powered designs.
• Compact I/O and Display Drive: 25 GPIOs plus dedicated LED sink capability (PD0–PD5 up to 120 mA sink) and an LCD controller reduce the need for external drivers.
• Robust Operating Range: Industrial temperature rating (−40 °C to +105 °C) supports deployment in demanding environments.
• Family Scalability: Part of the A31G11x series offering multiple package and peripheral variants, enabling design scaling across similar devices.
• Built‑in Reliability Features: On‑chip WDT, CRC generator and clock monitoring functions help maintain system stability and integrity.

Why Choose A31G112GR?

The A31G112GR positions itself as a compact, feature‑rich Cortex‑M0+ microcontroller that balances processing capability with an extensive set of on‑chip peripherals. Its combination of 32 Kbytes Flash, 4 Kbytes SRAM, multifunction timers, ADC and display/LED drive makes it well suited for consumer and general‑purpose embedded designs that require efficient integration and reliable operation across a wide temperature and voltage range.

Designers looking for a scalable solution within the A31G11x family will find options for different memory sizes, I/O counts and packages, allowing reuse of software and hardware concepts while tailoring peripheral sets and footprints to specific product needs.

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