ATSAME53N20A-AF

Overview

The ATSAME53N20A-AF is a 32-bit microcontroller from the Microchip SAM E53 series, built on an ARM Cortex-M4F core. It features 1 MB of in-system programmable flash memory and 256 KB of SRAM. The device operates at a maximum clock frequency of 120 MHz and supports a supply voltage range of 1.71 V to 3.63 V. It includes 81 general-purpose I/Os, 28 channels of 12-bit ADC, and two 12-bit DACs. Connectivity options include Ethernet, USB, SPI, I2C, UART/USART, LINbus, IrDA, QSPI, MMC/SD, and EBI/EMI interfaces.

Feature Summary

• Integrated floating-point unit (FPU) for efficient mathematical processing within the ARM Cortex-M4F architecture.
• Supports automotive-grade reliability with AEC-Q100 qualification for extended temperature operation.
• Includes comprehensive peripheral sets such as DMA, I2S, PWM, and watchdog timer for system control.
• Features internal oscillator and multiple communication interfaces for flexible embedded connectivity.

Applications

• Automotive infotainment systems requiring robust connectivity and processing power.
• Industrial motor control applications utilizing high-speed analog-to-digital conversion.
• Smart home devices needing secure data transmission via Ethernet or wireless interfaces.
• Medical equipment requiring precise signal acquisition through multiple ADC channels.

Procurement Notes

Verify the specific suffix 'AF' against official Microchip documentation to confirm package type and availability status. Ensure compatibility with existing board designs regarding pinout and thermal requirements. Check for any recent Product Change Notifications (PCNs) related to assembly sites or materials. Confirm that the selected variant meets all regulatory compliance standards required for your target market.

Selection Notes

Choose this component when a balance of high-performance computing and extensive connectivity is needed. The 120 MHz speed and FPU support complex algorithms efficiently. Consider the 100-TQFP package for ease of prototyping if surface mount density allows. Evaluate power consumption profiles against available voltage regulators to ensure stable operation across the specified temperature range.

Part Context

This part belongs to the SAM E53 family, designed for cost-sensitive yet feature-rich applications. It shares architectural similarities with other SAM E5x devices but offers specific memory and I/O configurations. The family emphasizes security features and low-power modes suitable for battery-operated or energy-efficient systems. Developers can leverage common software drivers and hardware abstraction layers across compatible members.

Replacement Considerations

ATSAME53N20A-AUT-EFP

FAQ

What is the operating temperature range for the ATSAME53N20A-AF?

The device is qualified for an ambient temperature range of -40°C to +85°C.

Does this microcontroller include a floating-point unit?

Yes, it integrates an ARM Cortex-M4F core which includes a single-precision floating-point unit (FPU).

How many analog input channels are available?

The MCU provides 28 channels of 12-bit Analog-to-Digital Converter (ADC) capability.