A34M456RL2N

The A34M456RL2N is a high‑performance 32‑bit microcontroller based on an Arm Cortex‑M4 core with single‑precision FPU, delivering up to 140 MHz operation and 175 DMIPS. It integrates program and data flash, SRAM, multi‑channel ADCs, DACs, PWM engines and a rich set of timers and serial interfaces targeted at electrical appliance and motor control applications.

Designed for embedded control systems, the device supports 2.7–5.5 V operation and a wide ambient range (‑40 °C to +105 °C) in a compact 64‑LQFP package, providing a balance of compute performance, real‑time control peripherals and flexible clock/power options.

Key Features

• Core and Performance Arm Cortex‑M4F CPU with FPU running up to 140 MHz and delivering 175 DMIPS; includes cache buffer (flash accelerator) to improve code execution throughput.
• Memory Up to 256 Kbytes of code flash, 32 Kbytes of data flash and up to 32 Kbytes of SRAM with Error Correction Code (ECC) support for improved memory reliability.
• Power and Clock Management Operates from 2.7 V to 5.5 V with POR/LVR/LVI reset options, low‑power SLEEP and DEEP‑SLEEP modes, internal HSI 8 MHz oscillator and external oscillator support with PLL up to 140 MHz.
• Timers and Motor Control Two 3‑phase 16‑bit MPWM generators, two 32‑bit free‑run timers and ten 16‑bit timers; watchdog timer with selectable prescalers and comprehensive timer modes for PWM and capture applications.
• Analog Front End Three independent 12‑bit ADC blocks (total 12 channels) capable of up to 2.0 Msps, plus two 10‑bit DAC outputs and four comparators—designed for motor feedback, sensor acquisition and closed‑loop control.
• Serial Interfaces Multiple serial peripherals including UART (6 units), SPI (2 units), I2C (2 units), enabling flexible interfacing to sensors, communications and HMI modules.
• System Peripherals 8‑channel DMA controller, CRC calculation unit with multiple CRC modes, random number generator (programmable seed) and development support via Serial Wire Debug (SWD).
• Package and Environment 64‑LQFP surface‑mount package (10 × 10 × 0.5T–1.6 mm) with 55 available I/O lines and operating temperature range of ‑40 °C to +105 °C.

Typical Applications

• Inverter Motor Controllers — Provides high‑speed PWM, multi‑ADC sampling and real‑time timers suitable for three‑phase inverter control and closed‑loop motor drives.
• Compressor and Fan Control — Integrated ADCs, DACs and PWM peripherals enable efficient sensor feedback and drive control for compressors and fans in appliances.
• Air‑Conditioning Systems — Combines computational performance and dedicated motor/PFC PWM units for compressor and blower control tasks.
• Electrical Appliance Control — Flash, SRAM and a broad peripheral set support appliance control logic, sensor interfacing and user‑level communication.

Unique Advantages

• Highly integrated motor‑control peripherals: Dual 3‑phase MPWM generators, PFC PWM support and multiple ADC trigger sources simplify motor and power control designs.
• Real‑time compute with FPU: Cortex‑M4F at 140 MHz with FPU and flash accelerator supports control algorithms and signal processing in real time.
• Flexible analog data path: Three 12‑bit ADCs up to 2.0 Msps, two 10‑bit DACs and comparators enable precise sensing and fast control loops.
• Robust operating range: Wide supply range (2.7–5.5 V) and commercial temperature rating (‑40 °C to +105 °C) suit demanding embedded environments.
• System efficiency and offload: 8‑channel DMA, CRC unit and RNG reduce CPU overhead for data movement, integrity checks and randomized functions.
• Compact implementation: 64‑LQFP package with 55 I/O lines provides a compact footprint while retaining I/O density for appliance controllers.

Why Choose A34M456RL2N?

The A34M456RL2N combines Cortex‑M4F compute performance with a focused set of motor and appliance control peripherals—MPWM, PFC PWM, multi‑unit ADCs and comprehensive timers—making it well suited for embedded designs that require deterministic control and integrated analog capture. Its memory configuration (up to 256 Kbytes flash, 32 Kbytes data flash and 32 Kbytes SRAM) and ECC support deliver a reliable platform for application firmware.

With flexible clocking, development support via SWD, robust voltage and temperature ranges and compact 64‑LQFP packaging, this device is positioned for OEMs and designers building inverter drives, compressor/fan controllers and appliance control systems that need a balanced combination of processing headroom and peripheral integration.

Request a quote or submit an inquiry to our sales team to discuss pricing, availability and design support for the A34M456RL2N.