M071R1E3AE

Microcontrollers Overview

The Nuvoton M071R1E3AE is a 32-bit microcontroller based on the Arm Cortex-M0 core, operating at frequencies up to 72 MHz. It integrates 128 KB of Flash memory for program storage and 16 KB of SRAM for runtime operations. The device features a comprehensive peripheral set including USB 2.0 Full-Speed Device with crystal-less support, three UARTs, two SPIs, two I2Cs, four 32-bit timers, six PWM outputs, twelve 12-bit ADC channels, and an External Bus Interface (EBI). It operates within a voltage range of 2.5 V to 5.5 V and is available in a 64-pin LQFP package.

Microcontrollers Feature Summary

• Integrates USB 2.0 Full-Speed Device controller with on-chip PHY supporting crystal-less operation in device mode.
• Includes Peripheral Direct Memory Access (PDMA) with nine channels to reduce CPU overhead during data transfers.
• Features configurable Data Flash memory and flash security locks to protect intellectual property and store parameters.
• Supports Firmware Over-The-Air (FOTA) updates via In-System Programmer (ISP) using Loader ROM.

Microcontrollers Applications

• Smart home appliance control systems
• IoT devices requiring secure code execution
• USB-enabled consumer electronics
• Industrial controllers needing external bus expansion

Microcontrollers Procurement Notes

Verify the specific package variant, as the M071R1 series includes both 14x14 mm and 7x7 mm LQFP64 options. Confirm that the crystal-less USB feature aligns with your design constraints, as it relies on internal oscillator calibration. Ensure compatibility with existing SWD/ICE debugging interfaces for production programming.

Microcontrollers Selection Notes

Select this component when a balance of computational performance and connectivity is required for embedded applications. The inclusion of PDMA and multiple communication interfaces makes it suitable for complex peripheral management. Consider the crystal-less USB capability if board space or component count reduction is a priority.

Microcontrollers Part Context

The M071R1E3AE belongs to the NuMicro M071 family, designed specifically for smart home appliances. It shares architectural similarities with the M071S series but differs in package dimensions. The family emphasizes code security through flash locks and supports various update mechanisms to facilitate long-term product maintenance.

Microcontrollers Replacement Considerations

M071SE3AE offers identical functionality in a smaller 7x7 mm LQFP64 package. M071R1D3AE provides the same features with different memory configurations or suffix variations. Verify pinout compatibility before substitution.