A31T216RLN

The Abov A31T216RLN is a 32-bit touch sensing microcontroller in the A31T214/216 series, built around an ARM Cortex-M0+ core. It targets touch and display applications and consumer appliance designs, combining an integrated core, memory and mixed-signal peripherals to simplify user-interface and control system designs.

With on-chip flash and SRAM, a 12-bit ADC, multiple timers and PWM channels, and up to 24 touch key channels, the device offers a balanced platform for embedded HMI, sensor interfacing and display control in products requiring flexible I/O and robust system features.

Key Features

• Core  ARM Cortex-M0+ 32-bit core delivering a 48 MHz operating speed for responsive firmware and predictable control tasks.
• Memory  256 Kbytes of FLASH and 16 Kbytes of SRAM for application code, touch firmware and runtime data storage.
• Power and Oscillators  Operates from 1.8 V to 5.5 V and supports an internal HSI 32 MHz oscillator plus external crystal support and PLL for flexible clocking. The device also supports SLEEP and POWER DOWN modes to reduce power consumption.
• Timers and PWM  Multiple timers including four 16-bit timers and six 16-bit PWM channels provide control for timing, motor or LED driving tasks.
• Analog Conversion  12-bit ADC with 15 channels and up to 150 ksps for sensor acquisition and analog signal monitoring.
• Touch and Display-Oriented Peripherals  Dedicated touch key support with up to 24 channels and integrated display/LED driver blocks (as part of series feature set) to streamline HMI implementations.
• Connectivity  On-chip communication includes I2C and USART interfaces, enabling peripheral and host communications.
• System Reliability and Utilities  Integrated watchdog timer, CRC generator and power/reset functions (POR, LVR, LVI) to support robust runtime behavior.
• Package and Temperature  Available in a 64-LQFP package (10 × 10 mm, 0.5 mm pitch) and rated for industrial temperature range –40 °C to 85 °C, suitable for a wide range of ambient conditions.

Typical Applications

• Home Appliances  Implements touch-based control panels and display interfaces for household devices using integrated touch key channels and display/LED driver features.
• Consumer Electronics  Drives user interfaces and sensor input processing in consumer devices where compact integration of MCU, ADC and touch functionality reduces board complexity.
• Human–Machine Interfaces (HMI)  Provides responsive touch sensing and PWM/timer resources for control panels, supporting both tactile feedback and display control.

Unique Advantages

• Highly integrated solution: 256 Kbytes FLASH, 16 Kbytes SRAM, up to 60 I/O pins and on-chip peripheral set reduce external component count and simplify BOM.
• Touch-optimized features: Up to 24 touch key channels built into the device accelerate development of capacitive touch interfaces without separate controllers.
• Flexible analog and timing resources: 12-bit ADC (15 channels, 150 ksps) plus multiple timers and six 16-bit PWM channels support sensor acquisition, motor/LED control and precise timing functions.
• Broad voltage and temperature range: 1.8–5.5 V supply range and –40 °C to 85 °C operating temperature enable use across varied product power domains and environments.
• Developer-friendly clocking: Internal 32 MHz HSI plus external crystal and PLL support make clock configuration adaptable to application performance and power targets.
• Built-in system safeguards: Watchdog timer, POR, LVR and LVI offer core system reliability features for stable field operation.

Why Choose A31T216RLN?

The A31T216RLN combines a 32-bit Cortex-M0+ core with substantial on-chip memory and a comprehensive peripheral set tailored for touch and display-centric embedded designs. Its integrated touch channels, ADC, PWM and communication interfaces provide a compact platform that streamlines hardware and firmware integration for consumer and appliance applications.

This device is suited to designers seeking a balance of performance, peripheral integration and environmental robustness. The combination of flexible clock sources, low-power modes and industry-standard packaging makes it a practical choice for scalable product lines and long-term deployment.

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