A31G336CU

The A31G336CU is a 32-bit microcontroller based on the energy-efficient ARM Cortex-M0+ core, delivering up to 48 MHz operation with integrated peripherals for embedded control applications. With up to 256 KB of code flash and 32 KB of SRAM, the device targets a range of sensor, control and USB-enabled designs where integration, flexible I/O and low-power operation are required.

Key Features

• Core ARM Cortex-M0+ 32-bit core running up to 48 MHz for deterministic control and efficient code density.
• Memory 256 KB code Flash with ECC and read-protection capability plus 32 KB on-chip SRAM for application and data storage.
• Power and Clock Wide supply range from 1.8 V to 5.5 V, internal RC oscillator plus external oscillator support, POR, LVR and LVI for robust power management.
• Low-Power Modes RUN, SLEEP and DEEP-SLEEP modes to reduce power consumption in battery-operated or energy-conscious designs.
• Timers & DMA Multiple timers (six 16-bit and two 32-bit) with PWM/capture/one-shot modes and a 4-channel DMA controller (8/16/32-bit transfers) to offload the CPU.
• Analog 12-bit ADC with 10 channels and two on-chip comparators for sensor interfacing and signal monitoring.
• Connectivity Rich serial interfaces including 4 × USART, 3 × I2C, 2 × SPI and USB 1.1 Full Speed. USB supports crystal-less operation as specified in the device documentation.
• System Reliability & Security Nested Vectored Interrupt Controller (NVIC) with 31 interrupt sources, CRC calculation unit (CRC-CCITT/CRC-16/auto/user-defined) and read protection for secure code storage.
• Real-Time & RTC Real Time Clock and Calendar (RTCC) and a 24-bit watchdog timer with selectable dividers for system supervision.
• Package & Temperature 48‑QFN (5×5 mm, 0.35 mm pitch) surface-mount package with operating temperature range −40 °C to 85 °C and up to 37 GPIO pins for compact board designs.

Typical Applications

• USB-enabled peripherals — Full Speed USB support with crystal-less operation simplifies connectivity for human-interface devices, data loggers and communication adapters.
• Sensor hubs and data acquisition — Multi-channel 12-bit ADC, comparators and multiple I2C/SPI ports enable aggregation and preprocessing of sensor signals.
• Industrial and consumer control — Multiple timers, PWM modes and robust power management suit motor control, appliance control and general embedded control tasks.
• Battery-powered instruments — Wide supply voltage range and SLEEP/DEEP-SLEEP modes support designs that require long battery life and flexible power rails.

Unique Advantages

• Highly integrated peripheral set: On-chip ADC, comparators, multiple serial interfaces, USB and DMA reduce external components and simplify BOM.
• Flexible power compatibility: 1.8 V to 5.5 V operation supports a range of system topologies from low-voltage to 5 V systems.
• Crystal-less USB capability: USB Full Speed operation without a crystal (per device documentation) lowers component count and board cost for USB designs.
• Memory reliability and security: Flash with ECC and read-protection adds data integrity and code protection for deployed systems.
• Real-time control offload: Multiple timers, PWM modes and a 4‑channel DMA controller reduce CPU load and improve control-loop responsiveness.
• Compact package with industrial-range temperature: 48‑QFN 5×5 mm package and −40 °C to 85 °C rating enable space-constrained, wide-temperature applications.

Why Choose A31G336CU?

The A31G336CU combines the efficiency of an ARM Cortex-M0+ core with a comprehensive set of on-chip peripherals—memory with ECC, ADC, comparators, multiple serial interfaces, USB Full Speed and DMA—making it well suited for embedded control, sensor aggregation and USB-connected applications. Its wide voltage range, low-power modes and supervisory features provide design flexibility across battery-powered and mains-connected systems.

As part of the A31G336 family, this variant offers a compact 48‑QFN footprint with 37 I/O pins for designs that need a balance of integration and small PCB area. The device’s combination of integration, reliability features and peripheral mix supports scalable product development and long-term deployment in consumer and industrial embedded applications.

If you would like pricing, lead-time information or assistance specifying the A31G336CU for your design, request a quote or submit a quote inquiry to our sales team.