A33M114SN

The A33M114SN is a 32-bit microcontroller based on an ARM Cortex-M3 core, engineered for motor-control and appliance applications that require high computational performance with low power operation. It combines dedicated motor PWM blocks, high-speed 12-bit ADCs and an integrated analog front end to simplify motor and sensor control tasks in household and industrial appliances.

Designed for embedded systems, the device offers a balanced mix of processing performance, on-chip peripherals and flexible power and clock options to support inverter motor control, sensor acquisition and real-time control tasks across a broad temperature and voltage range.

Key Features

• Core — ARM Cortex-M3 at 96 MHz High-performance 32-bit Cortex-M3 core with a maximum operating frequency of 96 MHz for real-time control and computation.
• Memory — Flash and SRAM 128 KB program Flash and 16 KB SRAM on-chip for application code and data. The device family also documents a 32 KB data flash option in the datasheet line-up.
• Power and Clock Flexible supply: 2.5 to 5.5 V operating range with both internal and external oscillator options; ADC operation documented from 2.7 to 5.5 V. Multiple power modes include Run, Sleep and Stop.
• Motor control and timers Two MPWM (motor PWM) generators and dedicated 3-phase PWM support for inverter and motor-drive topologies, plus a suite of general-purpose timers and a watchdog timer.
• High-speed A/D conversion 12-bit ADC capable of up to 1.3 MSPS with multiple channel inputs for fast analog signal acquisition from current/voltage sensors.
• Analog front end Integrated comparators and four operational amplifiers support signal conditioning and closed-loop control tasks.
• Connectivity and serial interfaces Multiple serial interfaces including UART, SPI and I2C, and quadrature encoder interfaces (QEI) for position feedback.
• System support and peripherals Nested Vector Interrupt Controller (NVIC) with many interrupt sources, DMA channels, CRC generator and SWD development support to aid deterministic control and development.
• Package and environment Surface-mount 44-LQFP package (10 × 10 mm, 0.8 mm pitch) and industrial-grade operating temperature from −40 °C to +105 °C.

Typical Applications

• Home Appliances — Ideal for refrigerators, washing machines, dryers and dishwashers where inverter motor control, sensor interfacing and reliable real-time control are required.
• Small Kitchen and Water Appliances — Suitable for blenders and water purifiers that need precision motor control and fast analog acquisition for safety and performance.
• Pumps & Fans — Provides PWM-based motor drive and encoder interfacing for efficient pump and fan control in household and light industrial equipment.

Unique Advantages

• Dedicated motor-control peripherals: Two MPWM generators and 3-phase PWM support reduce external gate-driver complexity for inverter designs.
• Fast analog acquisition: 12-bit ADC at up to 1.3 MSPS combined with on-chip op-amps and comparators enables accurate current/voltage sensing and fast control loops.
• Balanced on-chip integration: Flash, SRAM, DMA, CRC and multiple serial interfaces consolidate system functions and help reduce BOM and PCB area.
• Wide operating conditions: 2.5–5.5 V supply range (ADC operation documented from 2.7 V) and −40 °C to +105 °C operating temperature support robust operation across varied environments.
• Developer-friendly: SWD interface and NVIC-based interrupt management simplify debugging and deterministic real-time software design.

Why Choose A33M114SN?

The A33M114SN positions itself as a focused solution for embedded motor-control and appliance systems that need a combination of real-time compute performance, integrated analog acquisition and dedicated PWM resources. Its Cortex-M3 core at up to 96 MHz, integrated ADCs, op-amps, comparators and MPWM generators deliver the building blocks required for closed-loop motor control and sensor-driven appliance functions.

For designers targeting household and light industrial appliances, the device offers a scalable balance of on-chip integration, flexible voltage operation and industrial temperature range—helping reduce external components, simplify PCB design and accelerate development.

Request a quote or submit an inquiry for pricing and availability of the A33M114SN to receive technical and procurement support for your project.