ATSAM4S4BA-MU

Overview

The ATSAM4S4BA-MU is a 32-bit microcontroller based on the ARM Cortex-M4 core, operating at a maximum frequency of 120 MHz. It integrates 256 KB of Flash memory and 64 KB of SRAM within a 64-pin QFN package. The device features an external bus interface, FS USB Device, HS SDIO/SD/MMC, three SPI controllers, two I2C interfaces, I2S, two USARTs, two UARTs, sixteen 12-bit ADC channels, two 12-bit DAC channels, four 16-bit PWM outputs, and six 16-bit timers. It supports up to 47 I/O pins and operates with a supply voltage range of 1.62 V to 3.6 V across an industrial temperature range.

Feature Summary

• Built around the ARM Cortex-M4 processor with integrated Flash read accelerator and optional cache memory for increased system performance.
• Provides rich peripheral connectivity including FS USB, HS SDIO/SD/MMC, multiple serial communication interfaces, and analog peripherals like ADCs and DACs.
• Features low power consumption capabilities with specific current draw metrics for dynamic mode, backup mode, and RAM retention mode.
• Includes hardware code protection mechanisms such as memory access prevention, secure chip erase support, and CRC checks for memory integrity.

Applications

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

Procurement Notes

Verify the exact part number against official Microchip documentation to ensure correct package type and memory configuration. Confirm that the ordering suffix matches the required pin count and thermal characteristics. Check for any recent Product Change Notifications (PCNs) regarding assembly sites or packaging updates. Ensure compatibility with existing design tools and development environments before finalizing procurement decisions.

Selection Notes

Select this component when a balance of moderate memory density and high processing speed is required for embedded applications. The 64-pin QFN package offers a compact solution for space-constrained designs. Consider the availability of the SAM4S series ecosystem, including evaluation kits and software libraries, to accelerate development cycles. Evaluate power requirements against the specified operational modes to ensure efficiency meets system constraints.

Part Context

This device belongs to the SAM4S family of ARM-based microcontrollers from Microchip Technology. The series is designed to offer scalable performance and memory density, ranging from 128 KB to 2 MB of Flash. It provides pin-to-pin compatibility with previous generations like SAM3S and SAM7S, facilitating migration paths for existing designs while offering enhanced features such as higher clock speeds and additional peripherals.

Replacement Considerations

ATSAM4S4BA-AU

FAQ

Does the ATSAM4S4BA-MU include hardware floating-point support?

Yes, the ARM Cortex-M4 core integrated into the ATSAM4S4BA-MU includes a single-precision hardware floating-point unit (FPU).

What is the maximum operating frequency of the ATSAM4S4BA-MU?

The ATSAM4S4BA-MU operates at a maximum frequency of 120 MHz.