A31T214SNN

The A31T214SNN is a 32-bit touch sensing microcontroller based on an ARM Cortex-M0+ core, designed specifically for touch and display applications. It combines integrated touch-key support and a range of on-chip peripherals to enable compact, responsive user interfaces and embedded control systems.

Key Features

• Core & Performance  ARM Cortex-M0+ 32-bit core running at 48 MHz, providing deterministic control for real-time touch and display tasks.
• Memory  128 Kbytes of FLASH program memory and 16 Kbytes of RAM for application code and runtime data.
• Power & Clocking  Wide supply range of 1.8–5.5 V with support for internal and external oscillators, including a 32 MHz internal HSI and PLL.
• Analog & Data Conversion  12-bit ADC with 9 channels for reliable sensor and analog signal acquisition.
• Timers & PWM  Six 16-bit PWM channels and four 16-bit timers for precise timing, control, and PWM-driven functions.
• Touch Sensing  Integrated touch-key controller supporting 21 channels to implement capacitive touch user interfaces with minimal external components.
• Connectivity  On-chip serial interfaces including I2C, SPI and USART for sensor, display, and peripheral communication.
• System Reliability  Built-in Watch Dog Timer to support robust system operation and recovery.
• GPIO & Package  40 I/O pins in a 44-LQFP (10 × 10 × 0.8 mm) surface-mount package suitable for compact board layouts.
• Operating Range  Specified operating temperature range from −40 to 85 °C for use across a broad set of environments.

Typical Applications

• Home Appliances  Implement touch-based control panels and display interfaces for consumer appliances with integrated capacitive keys and PWM-driven indicators.
• Consumer Electronics  Drive compact user interfaces and sensor integration in handheld or countertop devices using the on-chip touch-key channels and serial interfaces.
• Industrial Controls  Provide robust touch and display control for industrial HMIs and operator panels within the −40 to 85 °C operating range.
• Embedded Display Interfaces  Manage display control and user input via integrated timers, PWMs, ADC inputs and serial communication ports.

Unique Advantages

• Integrated Touch-Key Support: 21-channel touch-key controller reduces external components and simplifies PCB design for capacitive user interfaces.
• Well-Balanced Performance: ARM Cortex-M0+ at 48 MHz provides sufficient processing headroom for responsive touch processing and display control.
• Comprehensive I/O and Peripherals: 40 I/O pins plus ADC, multiple PWMs and timers enable diverse peripheral interfacing without large BOM increases.
• Flexible Power and Clocking: 1.8–5.5 V supply range and support for internal/external oscillators (including 32 MHz HSI and PLL) give designers power and timing flexibility.
• Compact Surface-Mount Package: 44-LQFP (10 × 10 × 0.8 mm) package supports dense board layouts while providing necessary I/O count.
• Industrial Temperature Range: −40 to 85 °C rating supports deployment in a wide variety of environmental conditions.

Why Choose A31T214SNN?

The A31T214SNN positions itself as an integrated solution for designers building touch and display interfaces who need a balance of processing capability, peripheral integration, and environmental robustness. With an ARM Cortex-M0+ core at 48 MHz, 128 KB of FLASH, 16 KB of RAM, and dedicated touch-key channels, it is suited to compact HMI designs that require reliable input handling and peripheral control.

Its broad supply voltage range, internal/external clock options, multiple ADC channels, PWMs and timers, plus a 44-LQFP surface-mount package make the A31T214SNN a pragmatic choice for projects aiming to reduce component count while retaining flexibility in board layout and operating conditions.

Request a quote or submit an inquiry for the A31T214SNN to receive pricing and availability details and to discuss how it fits your project requirements.