ATSAM4S4BA-AN

Overview

The ATSAM4S4BA-AN is a 32-bit microcontroller based on the ARM Cortex-M4 core, operating at 120 MHz. It features 256 KB of Flash memory and 64 KB of SRAM within a 64-pin LQFP package. The device supports an extended industrial temperature range of -40°C to 105°C. Key peripherals include FS USB Device, HS SDIO/SD/MMC, multiple SPI and I2C interfaces, and analog components such as 16-channel 12-bit ADCs and 2-channel 12-bit DACs.

Feature Summary

• Built-in hardware code protection mechanisms including IP access prevention and secure chip erase capabilities.
• Native support for Microchip QTouch capacitive touch technology for implementing buttons, sliders, and wheels.
• Integrated multi-layer AHB bus matrix with 21-channel DMA for high data rate communication.
• Low power consumption with RAM retention mode below 25 µA and backup mode current of 1 µA.

Applications

• Industrial control systems
• Consumer goods and toys
• Medical devices
• Test and measurement equipment

Procurement Notes

Verify the specific ordering suffix 'N' confirms the -40°C to 105°C extended temperature range, as standard variants may differ. Confirm the package type matches the required 64-pin LQFP footprint. Ensure compatibility with existing design tools and IDEs such as Atmel Studio before finalizing procurement.

Selection Notes

Select this component when an extended industrial temperature range (-40°C to 105°C) is required alongside the 64-pin LQFP form factor. Compare against other SAM4S variants if lower memory density or different package options like QFN or BGA are acceptable for the application constraints.

Part Context

This part belongs to the SAM4S series of ARM Cortex-M4 microcontrollers by Microchip Technology. The series provides scalable performance up to 2 MB Flash and 160 KB SRAM. The ATSAM4S4BA-AN specifically offers 256 KB Flash in a 64-pin configuration, maintaining pin-to-pin compatibility with older SAM3S and SAM7S families for easier migration.

Replacement Considerations

ATSAM4S4BA-AU (Standard Temperature Range)

FAQ

What does the 'N' suffix indicate in the part number?

The 'N' suffix indicates that the device is rated for an extended industrial temperature range of -40°C to 105°C.

Does this MCU support capacitive touch sensing?

Yes, the SAM4S series offers native support for Microchip's QTouch technology, allowing for the implementation of buttons, sliders, and wheels.