A33M116RL

The A33M116RL is a 32-bit high-performance microcontroller based on the ARM Cortex-M3 core running up to 96 MHz, optimized for efficient, low-power operation in home appliance and motor control applications. It combines substantial on-chip memory, dedicated motor-control peripherals and a broad set of analog and digital interfaces to simplify inverter and appliance system design.

Key Features

• Core ARM Cortex-M3 32-bit core with a maximum operating frequency of 96 MHz for responsive real-time control.
• Memory 256 Kbytes code flash, 32 Kbytes data flash and 16 Kbytes SRAM to support firmware, calibration data and runtime stacks.
• Power and Clock Wide operating voltage range of 2.5–5.5 V (ADC operates from 2.7–5.5 V) with multiple power modes (Run, Sleep, Stop) for efficiency.
• Timers & Motor Control Two three-phase MPWM generators plus eight 16-bit timers and one 32-bit timer provide dedicated resources for dual inverter motor control and precise timing functions.
• Data Converters & Analog Front End Dual high-speed 12-bit ADCs (1.3 Msps) supporting 16 channels, four on-chip op-amps and four comparators for sensor conditioning and feedback loops.
• Connectivity Multiple serial interfaces including 4 UARTs, 2 SPIs, 2 I2Cs and two QEI channels for encoder feedback and peripheral communication.
• Peripherals & System Reliability DMA (8 channels), CRC generator (7/8/16/32-bit), Watchdog Timer, SWD development support and an NVIC with 86 interrupt sources for robust, deterministic control.
• Package & Operating Range 64-LQFP (10 × 10 mm, 0.5 mm pitch), 56 I/O ports and commercial-grade operating temperature range of −40 to +105 °C.

Typical Applications

• Home Appliances Designed for refrigerators, washing machines, dryers and dishwashers where integrated motor-control, ADC feedback and multiple interfaces reduce BOM and simplify control systems.
• Motor and Fan Control Dual 3-phase PWM generators, QEI inputs and fast ADC sampling enable precise control of inverter motors and fans with real-time feedback.
• Pumps and Water Systems On-chip op-amps, comparators and high-resolution ADC channels support sensor interfacing and closed-loop pump control.
• Small Kitchen and Household Appliances Embedded memory and multiple comms interfaces make the device suitable for blenders, water purifiers and similar appliances requiring compact, integrated control.

Unique Advantages

• Highly integrated motor-control subsystem: Two MPWM generators plus dual 12-bit ADCs and QEI channels deliver a compact platform for dual-inverter designs.
• Memory configuration for application flexibility: 256 KB code flash with 32 KB data flash and 16 KB SRAM supports complex firmware and runtime data storage.
• Rich peripheral set reduces external components: On-chip op-amps, comparators, DMA, CRC and multiple timers lower BOM and simplify PCB layout.
• Wide voltage and temperature range: 2.5–5.5 V operation (ADC 2.7–5.5 V) and −40 to +105 °C rating accommodate a broad range of appliance environments.
• Deterministic control and safety features: NVIC with extensive interrupt sources, watchdog timer and CRC support enable reliable real-time operation and data integrity checks.
• Developer-friendly support: SWD interface and standard serial peripherals streamline development and integration into existing toolchains.

Why Choose A33M116RL?

The A33M116RL positions performance and integration together for appliance and motor-control designs that require dedicated PWM generation, fast ADC feedback and a comprehensive peripheral set within a single 64-LQFP package. Its Cortex-M3 core at 96 MHz, mixed memory architecture and on-chip analog resources enable compact, efficient system implementations that address dual-inverter and multi-sensor applications.

This device is suited to engineers building robust, scalable control systems for home appliances, pumps, fans and similar equipment where deterministic control, reduced BOM and a wide operating envelope deliver long-term value.

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