A33M116RM

The A33M116RM is a 32-bit microcontroller based on the ARM Cortex-M3 core with a maximum operating frequency of 96 MHz. It integrates code and data flash, SRAM, high-speed ADCs, dual three-phase PWM generators and a broad set of analog and digital peripherals targeted at motor control and home-appliance control applications.

Designed for systems that require high-performance control and rich peripheral integration, the A33M116RM delivers a compact solution for motor drives, pumps, fans and household appliances across a wide operating voltage and temperature range.

Key Features

• Core — ARM Cortex-M3 32-bit core with a maximum operating frequency of 96 MHz, offering deterministic control performance for real-time motor and appliance control.
• Memory — 256 Kbytes of on-chip code Flash and 32 Kbytes of data flash combined with 16 Kbytes of SRAM for application code, calibration data and runtime buffers.
• Motor Control PWM — Two three-phase 16-bit PWM generators (MPWM) for advanced motor drive topologies and multi-motor control applications.
• High-speed A/D — Dual 12-bit ADCs providing high-speed sampling and multiple analog inputs (16 ADC channels), suitable for current sensing and feedback loops.
• Analog Front End — Four integrated operational amplifiers and comparators for signal conditioning and protection functions.
• Communications — Multiple serial interfaces including 4 UARTs, 2 SPIs and 2 I2Cs to support human‑machine interfaces, sensor networks and external peripherals.
• Timers & System Peripherals — Watchdog timer, free-run timer, eight general-purpose timers, CRC generator (7/8/16/32-bit) and eight-channel DMA for deterministic timing and efficient data movement.
• Position & Encoder Support — Dual Quadrature Encoder Interface (QEI) channels for rotor position feedback and closed-loop control.
• Interrupt & Debug — Nested Vector Interrupt Controller (NVIC) with 86 interrupt sources and SWD development support for development and system integration.
• Power, Clock & Environmental — Operating voltage 2.5 to 5.5 V (ADC operates from 2.7 to 5.5 V); external oscillator support; industrial-grade operating temperature from −40 °C to +105 °C.
• Package & I/O — 56 general-purpose I/O pins in a 64-LQFP surface-mount package for compact board designs.

Typical Applications

• Home Appliances — Motor-driven appliances such as refrigerators, washing machines and dishwashers leveraging integrated MPWM and ADCs for efficient motor control and sensing.
• Pumps & Fans — Speed and torque control for pumps and fans using the three-phase PWM generators and quadrature encoder interfaces for precise feedback.
• Small Motor Drives — BLDC and PMSM control systems that require dual MPWM outputs, fast ADC sampling and on-chip analog conditioning.
• Consumer Appliances — Embedded control for blenders, dryers and water purifiers combining communications, analog front end and timing peripherals.

Unique Advantages

• Highly integrated motor-control platform: Dual three-phase 16-bit PWM generators, dual 12-bit ADCs and analog op-amps reduce external components and simplify BOM.
• Real-time performance at 96 MHz: Cortex-M3 core and NVIC with 86 interrupt sources provide responsive control and deterministic interrupt handling for demanding control loops.
• Flexible communications: Multiple UART, SPI and I2C channels support a range of HMI, sensor and peripheral interfaces without external bridges.
• Robust system peripherals: Dedicated DMA, CRC generator and watchdog timer improve reliability and offload the CPU for deterministic operation.
• Wide voltage and temperature range: 2.5–5.5 V supply (ADC 2.7–5.5 V) and −40 °C to +105 °C operating range enable use across commercial and industrial appliance environments.
• Compact packaging and I/O count: 56 I/O pins in a 64-LQFP surface-mount package simplify board layout for space-constrained designs.

Why Choose A33M116RM?

The A33M116RM combines a high-performance Cortex-M3 core with extensive motor-control and analog peripherals in a single, compact package—making it suitable for appliance and motor-drive designs that require integrated control, sensing and communications. Its combination of dual MPWM generators, dual high-speed ADCs, analog front end and multiple serial interfaces reduces external component count while supporting robust, real-time control.

Engineers designing pumps, fans, household appliances and small motor drives will find the A33M116RM delivers a balanced mix of performance, integration and system peripherals—backed by development features such as SWD and a comprehensive interrupt architecture for streamlined prototyping and deployment.

Request a quote or contact sales for pricing and availability of the A33M116RM 32-bit microcontroller and to discuss volume, lead times or design-in support.