A33G538VQ

The A33G538VQ is a general-purpose microcontroller from the A33G53x series designed for use as the main controller in household appliances. It integrates an Arm® 32-bit Cortex®-M3 core running up to 75 MHz with a comprehensive peripheral set to support appliance control, sensor interfacing, user I/O and timing functions.

With 512 KB of code flash, 32 KB data flash, 24 KB SRAM and a broad range of on-chip peripherals, the device delivers a balance of performance, memory capacity and integration for embedded appliance designs operating across a 3.0–5.5 V supply and –40 to 85 °C temperature range.

Key Features

• Core  Arm® 32-bit Cortex®-M3 core operating up to 75 MHz, providing deterministic 32-bit processing for control and signal processing tasks.
• Memory  512 KB code flash (device variant A33G538VQ), 32 KB data flash and 24 KB SRAM. Dual-bank code flash with ECC and Read-While-Write (RWW) support enhances in-field firmware management and runtime reliability.
• Power & Clock  Operating voltage 3.0–5.5 V. Internal IOSC16 (16 MHz) and RINGOSC (1 MHz) oscillators, external main oscillator support (4–10 MHz), 32.768 kHz sub-crystal and PLL frequency generator up to 75 MHz for flexible clocking and low-power modes.
• Connectivity  Multiple serial interfaces: I2C (2), SPI (2), UART (4) including two 16450 and two 16550 asynchronous ports. These support common appliance connectivity and display/host interfaces.
• Timers, PWM & Watchdog  Ten 16-bit timer channels with capture/output functionality, eight PWM generators with 16-bit counters, a 32-bit watchdog down-count timer and a 32-bit free-run timer for precise motor, power and timing control.
• Analog  Single 12-bit SAR ADC with up to 16 input channels and 70 ksps conversion rate (max ~15 µs per channel under specified conditions) for sensor and analog signal acquisition.
• I/O & Package  Up to 90 GPIO pins with interrupt capability and multi-function mapping. Supplied in a 100-MQFP package (14 × 20 mm, 0.65 mm pitch) for surface-mount assembly.
• System Reliability & Power Management  Power-on/power-down reset (POR/LVR/LVI), eight-step low-voltage detector with reset/interrupt and low-power modes (SLEEP, DEEP-SLEEP) for robust operation and controlled wake-up behavior.
• Development Support  On-chip debug support with Serial Wire Debug (SWD) and JTAG interfaces for development and system bring-up.

Typical Applications

• Home Appliances  Main controller for household appliances, leveraging integrated memory, timing and analog peripherals to manage device functions and user interfaces.
• Appliance User Interfaces  Drive displays, buttons and LEDs while handling serial communication with sensors and subsystems using multiple UART, I2C and SPI ports.
• Sensor and Analog Management  Collect and process analog inputs with the 12-bit ADC and map signals to control logic, timing and PWM outputs for actuator or HVAC control within appliances.

Unique Advantages

• Balanced performance and memory footprint: 75 MHz Cortex‑M3 paired with 512 KB code flash and 24 KB SRAM supports complex appliance firmware and feature sets without external code memory.
• Comprehensive peripheral integration: ADC, PWM, multiple timers, UART/SPI/I2C and extensive GPIO reduce BOM and simplify board-level design for appliance controllers.
• Flexible clocking and power modes: Internal and external oscillator options plus PLL and low-power modes enable designs optimized for performance or energy efficiency across 3.0–5.5 V operation.
• Robust system features: Dual-bank flash, ECC and LVD/POR protections support reliable firmware updates and resilient operation in consumer environments.
• High I/O count in compact package: Up to 90 I/O pins in a 100‑MQFP package provide extensive sensor, actuator and interface routing while maintaining a manufacturable surface-mount form factor.

Why Choose A33G538VQ?

The A33G538VQ positions itself as an integrated controller platform for household appliance designs that require a capable 32-bit core, substantial on-chip memory and a wide set of peripherals. Its combination of Cortex‑M3 performance, dual-bank flash with ECC and a broad I/O/peripheral set supports development of feature-rich, reliable appliance firmware while minimizing external components.

Designed for embedded engineers and procurement teams targeting consumer appliance applications, the A33G538VQ delivers a pragmatic balance of processing headroom, peripheral density and proven system features for long-term product development and production.

Request a quote or submit an inquiry for the A33G538VQ to discuss volume pricing, lead times and technical evaluation support for your appliance designs.