ATSAM4S4AB-MN

Overview

The ATSAM4S4AB-MN is a 32-bit microcontroller based on the ARM Cortex-M4 core, operating at a maximum clock frequency of 20 MHz. It features 256 KB of in-system programmable Flash memory and 64 KB of SRAM. The device is housed in a 48-pin QFN package with 34 available I/O lines. It supports an operating temperature range from -40 °C to +105 °C. Key peripherals include DMA channels, PWM outputs, and an ADC. The component complies with JESD-30 standards for square chip carriers.

Feature Summary

• Integrates an ARM Cortex-M4 processor core for efficient 32-bit execution.
• Includes hardware acceleration capabilities via Direct Memory Access (DMA) channels.
• Provides analog-to-digital conversion functionality through built-in ADC modules.
• Supports pulse width modulation generation for motor control or signal applications.

Applications

• Industrial control systems requiring robust processing within compact footprints.
• Consumer electronics utilizing low-power embedded controllers.
• Automotive subsystems needing extended temperature range operation.
• Medical devices requiring reliable data acquisition via integrated ADCs.

Procurement Notes

Verify the specific suffix against official Microchip documentation to confirm package type and temperature grade. Ensure compatibility with existing PCB layouts for the 48-QFN form factor. Cross-reference part numbers with current datasheets to avoid discrepancies due to manufacturing updates or regional variations.

Selection Notes

Select this model when a 20 MHz Cortex-M4 solution with 256 KB Flash is required in a small 48-pin package. Compare against other SAM4S variants if higher clock speeds or additional I/O are needed. Consider thermal management requirements for the QFN package in high ambient temperature environments.

Part Context

This component belongs to the Microchip SAM4S series of ARM-based microcontrollers. The series offers various memory sizes and package options tailored for different application constraints. The ATSAM4S4AB-MN specifically targets designs prioritizing code density and peripheral integration over maximum processing speed.

Replacement Considerations

Consult official substitution guides for pin-compatible alternatives within the SAM4S family. Verify functional equivalence regarding memory size and peripheral availability before replacing.