A31S134KU

The A31S134KU is a 32-bit microcontroller based on the energy-efficient ARM Cortex-M0+ core running up to 32 MHz. It combines a 128 KB code flash, 4 KB data flash and 16 KB SRAM with a broad set of on-chip peripherals and power-management features.

Designed for general-purpose embedded systems across the industrial temperature range (‑40 °C to 85 °C), the A31S134KU delivers integrated analog, timing and communications resources to simplify compact, low-power designs operating from 1.8 V to 5.5 V.

Key Features

• Core ARM Cortex‑M0+ 32‑bit core running up to 32 MHz for efficient control and processing.
• Memory 128 KB code flash plus 4 KB data flash and 16 KB SRAM; on‑chip read protection supported for security.
• Power and Clock Operates from 1.8 V to 5.5 V with POR, Low‑Voltage Detection, LVR/LVI, internal RC oscillator and LDO; supports RUN, SLEEP and DEEP‑SLEEP modes for reduced power consumption.
• Timers Multiple timers including six 16‑bit channels and two 32‑bit timers with PWM, capture, one‑shot and periodic modes (12‑bit prescaler).
• Analog 12‑bit A/D converter with 8 channels (50 ksps) for accurate sensor sampling and data acquisition.
• Communications Rich connectivity with UART (1), USART (3), SPI (2) and I2C (2), plus Serial Wire Debug (SWD).
• System Reliability Two‑channel DMA supporting 8/16/32‑bit transfers, CRC unit (CRC‑16/CCITT) and a 24‑bit watchdog timer for robust operation.
• I/O and Package Up to 29 I/O pins on the A31S134KU variant with sink‑type high‑current outputs; available in a 32‑QFN (5×5 mm, 0.50 mm pitch) package.
• Operating Range Qualified for operation from ‑40 °C to 85 °C.

Typical Applications

• Industrial and Commercial Control Embedded controllers and automation modules benefiting from wide temperature range, multiple timers and robust reset/power features.
• Sensor Data Acquisition Sensor hubs and measurement nodes using the 12‑bit ADC (8 channels, 50 ksps), DMA and timers for efficient sampling and data handling.
• Human Machine Interfaces & Communication Bridges Applications leveraging multiple UART/USART, SPI and I2C ports to drive displays, keypads and external peripherals.

Unique Advantages

• Balanced 32‑bit performance and efficiency: Cortex‑M0+ at up to 32 MHz delivers capable control processing with modest power consumption for embedded tasks.
• Integrated memory with security: 128 KB flash plus 4 KB data flash and read protection simplify firmware storage and basic security needs without external memory.
• Flexible power and voltage support: 1.8 V to 5.5 V operation, LDO, internal RC oscillator and multiple low‑power modes ease power‑supply design and battery‑aware operation.
• Comprehensive peripheral set: ADC, timers, DMA, CRC and multiple serial interfaces reduce BOM and streamline designs that require mixed analog/digital functions.
• Compact package for space‑constrained designs: 32‑QFN (5×5 mm) package offers a small platform footprint while exposing up to 29 I/O pins.

Why Choose A31S134KU?

The A31S134KU positions itself as a versatile, general‑purpose MCU that combines a 32‑bit Cortex‑M0+ core with substantial on‑chip memory and a broad peripheral set. Its wide operating voltage and temperature ranges, together with power‑management features and security options, make it suitable for compact embedded projects that demand reliable operation in commercial and industrial environments.

Choose the A31S134KU when your design requires an integrated, low‑power 32‑bit controller with ADC, multiple serial interfaces, DMA and watchdog capabilities in a small 32‑QFN package.

Request a quote or submit a product inquiry for the A31S134KU to receive pricing and availability information from our sales team.