A31T214CLN

The A31T214 is a 32-bit touch sensing microcontroller designed for touch-and-display applications. It integrates an ARM Cortex-M0+ core running at 48 MHz with targeted peripherals and memory to support responsive human–machine interfaces and appliance control.

With integrated touch-key support, a broad set of timers and communication interfaces, and flexible power options, the A31T214 is suited to consumer and home-electronics designs that require compact, highly integrated control and user-interface handling.

Key Features

• Core & Performance  ARM Cortex-M0+ 32-bit core operating at 48 MHz for deterministic embedded control and UI responsiveness.
• Memory  128 Kbytes of on-chip Flash program memory and 16 Kbytes of SRAM for application code and runtime data.
• Touch & GPIO  Up to 24 touch-key channels and up to 44 general-purpose I/O pins to implement capacitive user interfaces and control logic.
• Analog & Data Conversion  12-bit ADC (11 channels, 150 ksps) for sensor and signal acquisition.
• Timers & PWM  Multiple timer resources including 16-bit timers ×4 and six 16-bit PWM channels for timing, control and dimming applications; watchdog timer for system reliability.
• Connectivity & Serial Peripherals  Integrated I2C, USART and SPI interfaces plus and DMA support (series features) to connect displays, sensors and external peripherals.
• Clocking & Oscillators  Internal RC oscillator (HSI 32 MHz) with support for external clock sources, enabling flexible system clock configurations.
• Power & Low-Power Modes  Wide operating supply range of 1.8 V to 5.5 V and support for SLEEP and POWER DOWN modes to match different power budgets.
• Package & Environmental Range  48-pin LQFP (7 × 7 mm, 0.5 mm pitch) surface-mount package with operating temperature −40 °C to +85 °C.

Typical Applications

• Touch-and-Display Interfaces  Drives capacitive touch keys and manages display-related control and timing for embedded user interfaces.
• Home Appliances  Implements control and user interaction functions in household devices, leveraging integrated timers, PWM and touch channels.
• Consumer Electronics  Provides compact MCU functionality for consumer products that require touch input, sensor acquisition and serial connectivity.
• Human–Machine Interfaces (HMI)  Enables responsive HMI designs with dedicated touch-key channels and sufficient I/O to connect indicators and controls.

Unique Advantages

• Integrated Touch Sensing: 24 touch-key channels built into the MCU reduce external components and simplify capacitive UI design.
• Balanced Memory and Performance: 128 Kbytes Flash and 16 Kbytes SRAM paired with a 48 MHz Cortex-M0+ core deliver room for UI firmware and control tasks.
• Flexible Power Range: 1.8–5.5 V supply support allows use across a variety of battery and line-powered designs.
• Rich Control Peripherals: Multiple timers, six 16-bit PWMs and a 12-bit ADC provide the peripherals needed for timing, motor/LED control and sensing.
• Compact, Manufacturable Package: 48-pin LQFP (7 × 7 mm) surface-mount package supports compact PCB layouts and standard assembly processes.
• Robust Operating Range: −40 °C to +85 °C rating supports deployment in consumer and appliance environments.

Why Choose A31T214CLN?

The A31T214CLN positions itself as a compact, integrated microcontroller for touch-and-display applications where a combination of touch sensing, peripheral integration and reliable operation is required. Its ARM Cortex-M0+ core, on-chip memory, dedicated touch channels and broad peripheral set make it suitable for embedded designers building consumer and home-electronics interfaces.

Backed by detailed datasheet and user documentation from the manufacturer, the A31T214CLN offers a predictable platform for scalable UI and control designs that need a balance of performance, I/O flexibility and power options.

Request a quote or contact sales to discuss pricing, lead times and how the A31T214CLN can fit your next touch-and-display design.