ATSAM4S4AB-AN

Overview

The ATSAM4S4AB-AN is a 32-bit microcontroller from the Microchip SAM4S series, built on the ARM Cortex-M4 core. It operates at a maximum frequency of 120 MHz and integrates 256 KB of flash memory with 64 KB of SRAM. The device features an internal oscillator and supports a supply voltage range of 1.62 V to 3.6 V. It includes analog converters such as 11x12-bit ADCs and 2x12-bit DACs. Connectivity options include I2C, IrDA, SPI, SSC, UART/USART, and USB interfaces. The component is housed in a 48-QFN package and functions within a temperature range of -40°C to 105°C.

Feature Summary

• High-performance 32-bit ARM Cortex-M4 processor with hardware floating-point unit
• Integrated full-speed USB Device port for communication applications
• Flexible peripheral set including multiple serial communication interfaces and DMA controller
• Dual-bank flash memory implementation with cache memory support

Applications

• Industrial control systems requiring robust processing capabilities
• Consumer electronics utilizing USB connectivity
• Medical devices needing precise analog signal conversion
• Automotive infotainment and instrumentation modules

Procurement Notes

Verify the specific suffix 'AN' against official Microchip documentation to confirm the exact package type and temperature grade. Ensure compatibility with existing PCB footprints for the 48-QFN configuration. Check for any recent Product Change Notifications regarding assembly sites or material composition updates before finalizing procurement orders.

Selection Notes

Select this model when a balance of moderate flash capacity and high-speed processing is required in a compact form factor. Compare pin counts and peripheral availability against similar SAM4S variants like the ATSAM4S4BB if additional I/O is needed. Consider power consumption profiles relative to the 120 MHz operating speed for battery-sensitive designs.

Part Context

This component belongs to the SAM4S family of microcontrollers designed for cost-effective embedded applications. The series shares a common instruction set architecture with other Cortex-M4 based parts from Microchip, facilitating code reuse across different product lines while offering varying memory sizes and package options.

Replacement Considerations

Consult official substitution lists for direct pin-compatible alternatives within the SAM4S series. Verify that any replacement part maintains identical flash size, RAM capacity, and package dimensions to ensure mechanical fit.