A31T214IUN

The A31T214IUN is a 32-bit touch sensing microcontroller from Abov, based on the ARM Cortex‑M0+ core. It combines touch control and display-oriented peripherals with a compact 40‑pin QFN package to support embedded user interfaces and appliance control functions.

Designed for embedded consumer and home electronics, the device integrates on‑chip flash (128 Kbytes) and SRAM (16 Kbytes), mixed‑signal peripherals and a flexible power/clock system, delivering a compact, single‑chip solution for touch-enabled display and control applications.

Key Features

• Core ARM Cortex‑M0+ 32‑bit processor with a system clock capability up to 48 MHz and support for low‑power RUN/SLEEP/POWER‑DOWN modes.
• Memory 128 Kbytes of on‑chip FLASH program memory and 16 Kbytes of SRAM for application code and runtime data.
• Power and Clock Wide operating voltage range from 1.8 V to 5.5 V and an internal high‑speed oscillator (32 MHz) with support for external oscillators for flexible clock design.
• Timers and PWM Multiple timers including 16‑bit timers (4) plus a combination of PWM channels (1×8‑bit and 6×16‑bit) for motor, lamp or actuator control and timing tasks.
• Analog 12‑bit ADC with 9 channels for precise sensor measurement and analog input sampling.
• Interfaces Peripheral connectivity includes I2C and USART; the device architecture and documentation also reference SPI, UART and DMA for flexible system integration.
• Touch and Display Dedicated touch key support (21 channels) and integrated LCD/LED driver functionality to implement capacitive touch user interfaces and display control.
• System Reliability Built‑in safety and system features including watchdog timer, POR/LVR/LVI and hardware CRC generator; qualified to UL60730 for appliance safety applications.
• Package and I/O 40‑pin QFN (6×6 mm) surface‑mount package offering up to 38 general‑purpose I/O pins for sensors, indicators and external peripherals.
• Environmental Range Industrial operating temperature range from −40 °C to 85 °C for robust field deployment.

Typical Applications

• Home Appliances Touch‑enabled control panels and display drivers for household devices where integrated touch sensing and safety qualification (UL60730) are important.
• Consumer Electronics User interfaces and small displays for consumer products that require capacitive touch keys, ADC sensor inputs and compact MCU integration.
• Appliance User Interfaces Control and timing functions for appliances, using on‑chip timers, PWM channels and watchdog functionality to manage user controls and safety features.
• Embedded Display Controllers Small LCD/LED driven displays with local touch sensing and peripheral connectivity for system expansion via I2C/USART/SPI.

Unique Advantages

• Integrated touch-to-display capability: Combine touch key support and LCD/LED driver features in a single QFN package to reduce BOM and simplify PCB layout.
• Wide supply range: Operates from 1.8 V to 5.5 V, enabling designs across battery‑powered and line‑powered applications without additional power conversion complexity.
• Balanced compute and low‑power operation: 32‑bit Cortex‑M0+ processing at up to 48 MHz with multiple low‑power modes to balance responsiveness and energy efficiency.
• Rich mixed‑signal peripherals: 12‑bit ADC (9 channels), multiple timers and a variety of PWM channels provide the I/O and control resources needed for sensor interfacing and actuator control.
• Appliance safety qualification: UL60730 qualification supports integration into household appliance designs requiring recognized safety standards.
• Compact, high‑I/O package: 40‑pin QFN (6×6 mm) with up to 38 I/O pins delivers a small footprint while retaining flexible peripheral access.

Why Choose A31T214IUN?

The A31T214IUN positions itself as a compact, integrated microcontroller for designers creating touch‑centric user interfaces and display controllers in consumer and home electronics. With a Cortex‑M0+ core, on‑chip flash and SRAM, and a broad set of mixed‑signal peripherals, it provides the building blocks to implement capacitive touch, sensor acquisition and display control in a single device.

Its wide voltage range, industrial temperature tolerance and UL60730 qualification make it suitable for appliance and consumer applications that require reliable operation and recognized safety characteristics. Documentation and development resources for the A31T214/216 series are provided by Abov Semiconductor to support design and integration.

Request a quote or submit an inquiry for pricing, availability and lead time to evaluate the A31T214IUN for your next touch‑enabled product design.