A31G111GR

The A31G111GR is a 32-bit microcontroller based on the ARM Cortex-M0+ core, offering 16 Kbytes of Flash and 4 Kbytes of SRAM. Designed for embedded control in compact systems, it combines a flexible power window (1.8 V to 5.5 V), 40 MHz operating speed, and a broad set of on-chip peripherals to support user interfaces, sensor I/O and motor/timer control.

Common application areas include home appliances, smart door locks, air cleaners and other general-purpose embedded products where integration, low-power operation and reliable control are required.

Key Features

• Core  ARM Cortex-M0+ 32-bit core running up to 40 MHz for efficient control and deterministic interrupt handling.
• Memory  16 Kbytes of internal Flash and 4 Kbytes of SRAM for code and data storage in compact embedded designs.
• Power and Clock  Wide supply range from 1.8 V to 5.5 V with internal RC oscillator and support for external clock sources. Includes POR, LVR and LVI for robust power supervision.
• Timers and PWM  Multiple timers including 16-bit timers, a 16-bit timer with 6-channel PWM, 3-phase PWM support and 32-bit timers for precise timing and motor-control tasks.
• Analog  12-bit A/D converter (5 channels) offering up to 50 ksps conversion rate for sensor interfacing and analog measurement.
• Serial Interfaces  Multiple serial interfaces including USART/UART and I2C to connect displays, sensors and peripherals; USART supports UART and SPI modes where applicable.
• Display and LED Drive  Integrated LCD driver/controller and LED driver with high-current sink capability (max. 120 mA across six pins PD0–PD5) for direct user-interface support.
• System Reliability  On-chip watchdog timer (WDT), CRC-16/CCITT generator and clock monitoring to improve system integrity and enable firmware validation.
• Low Power Modes  Supports sleep and deep-sleep modes to reduce power consumption in battery or energy-sensitive applications.
• Package & I/O  28‑TSSOP surface-mount package with 25 general-purpose I/O pins, suitable for compact PCB layouts.
• Operating Range  Industrial temperature operation from −40 °C to +105 °C for extended-environment reliability.

Typical Applications

• Home Appliances  Control panels, sensor inputs and display driving for appliances, leveraging the LCD driver, ADC and PWM timers for user interfaces and actuator control.
• Smart Door Locks  Secure low-power control and user-interface handling using on-chip timers, watchdog and low-power modes.
• Air Cleaners  Fan speed control and sensor readout using PWM timers and the 12-bit ADC for air-quality sensing and control loops.
• General-Purpose Embedded Systems  Compact control applications that require integrated serial interfaces, display drivers and reliability features in a small package.

Unique Advantages

• Highly integrated peripheral set: Combines timers, ADC, LCD/LED drivers, CRC generator and serial interfaces to reduce external BOM and simplify board design.
• Flexible power and clocking: Wide 1.8 V–5.5 V supply and internal/external oscillator support enable varied power-topology and clock architectures.
• Compact package with ample I/O: 28‑TSSOP package and 25 GPIO pins provide a small-footprint solution with sufficient I/O for HMI and control tasks.
• Robust system features: POR, LVR, LVI, watchdog and CRC support increase system reliability and ease firmware validation and fault recovery.
• Industrial temperature capability: Rated from −40 °C to +105 °C for deployment in extended-environment applications.
• Family scalability: Part of the A31G11x family with multiple memory and package options, enabling design scalability across similar device variants.

Why Choose A31G111GR?

The A31G111GR positions a Cortex‑M0+ processing core alongside a balanced set of on‑chip peripherals—Flash, SRAM, ADC, timers, display drivers and serial interfaces—delivered in a compact 28‑TSSOP package. This combination supports efficient embedded control, user-interface management and sensor integration while keeping board complexity and external component count low.

It is suited to designers seeking a reliable, integrated controller for home appliances, access control, air quality systems and other general-purpose embedded products where supply flexibility, industrial temperature range and on-chip display/LED drive are important.

Request a quote or submit a product inquiry to our sales team to discuss pricing, availability and sourcing for A31G111GR.