A31G346CU

The A31G346CU is a 32-bit microcontroller based on the energy-efficient ARM Cortex-M0+ core, offering deterministic performance at up to 48 MHz. It combines up to 256 Kbytes of code Flash and 32 Kbytes of SRAM with a broad peripheral set and flexible power management, making it well suited for embedded designs that require low-power operation and integrated analog and digital peripherals.

Operating over a wide 1.8 V to 5.5 V supply range and supporting both internal and external oscillators, the A31G346CU addresses applications that demand supply flexibility, mixed-signal interfacing and compact surface-mount packaging in a 48-QFN (6×6 ×0.4 mm) footprint.

Key Features

• Core ARM Cortex-M0+ 32-bit core running up to 48 MHz for energy-efficient embedded processing.
• Memory Up to 256 Kbytes of Flash program memory and 32 Kbytes of SRAM to support code and data storage for complex embedded firmware.
• Power and Voltage Range Wide 1.8–5.5 V supply range with on-chip power management including POR, LVR, LVI and an LDO to simplify power sequencing and protection.
• Low-Power Modes SLEEP and DEEP-SLEEP modes plus an internal RC oscillator to reduce power consumption in standby and low-activity conditions.
• Timers and RTC Multiple 16-bit and 32-bit timers plus a Real Time Clock/Calendar (RTCC) for scheduling, timing and real-time event handling.
• Analog 12-bit A/D converter for precision analog-to-digital conversion in sensor and measurement applications.
• Interfaces Standard serial connectivity with I2C, SPI and USART for peripheral communication and system integration.
• DMA and CRC Integrated DMA controller for efficient data movement and a CRC generator for data integrity checks.
• System Reliability Watch Dog Timer, POR, LVR and LVI features to enhance system reliability and recoverability.
• Package and Temperature 48-QFN (6×6–0.4 mm) surface-mount package and an operating temperature range of −40 to 85 °C for a wide set of deployment environments.

Typical Applications

• Embedded control and automation — Core performance, timers and serial interfaces enable control tasks, timing and peripheral coordination.
• Sensor hubs and data acquisition — 12-bit ADC, DMA and serial buses simplify analog sensor interfacing and efficient data transfer.
• Battery-powered and portable devices — Energy-efficient Cortex-M0+ core, low-power modes and flexible voltage range support battery operation and varied power sources.
• User interface and communication modules — USART, SPI and I2C provide connectivity for displays, keypads and external transceivers.

Unique Advantages

• Balanced processing and efficiency: Cortex-M0+ core at 48 MHz delivers adequate compute performance while keeping power consumption low for embedded tasks.
• Generous on-chip memory: 256 Kbytes Flash and 32 Kbytes SRAM allow larger firmware footprints and local data buffering without external memory.
• Flexible power management: Wide 1.8–5.5 V supply range with POR, LVR and LVI plus internal RC oscillator simplifies designs across varying power sources.
• Integrated mixed-signal peripherals: 12-bit ADC, RTC, timers and CRC reduce external component count for sensor and timing-centric applications.
• Compact surface-mount package: 48-QFN (6×6–0.4 mm) provides a small PCB footprint while offering 39 general-purpose I/O pins for system connectivity.

Why Choose A31G346CU?

The A31G346CU positions itself as a versatile, energy-efficient microcontroller that combines a proven ARM Cortex-M0+ core with substantial on-chip memory and a comprehensive peripheral set. It is designed for engineers who need a compact, reliable solution for mixed-signal embedded applications that require both compute capability and integrated analog and communication peripherals.

With broad supply-voltage support, low-power operating modes and a temperature range spanning −40 to 85 °C, the A31G346CU supports robust designs that can scale across product families and deployment conditions while minimizing external BOM complexity.

Request a quote or submit an inquiry to sales for pricing, lead times and additional technical information about the A31G346CU.