ATSAM4E8CA-CU

Overview

The ATSAM4E8CA-CU is a 32-bit microcontroller from the SAM4E series, manufactured by Microchip Technology. It integrates an ARM Cortex-M4 processor core operating at a maximum frequency of 120 MHz. The device features 512 kB of in-system programmable Flash memory and 128 kB of SRAM. It utilizes a 100-pin LQFP package suitable for surface-mount applications. Key peripherals include a USB OTG controller, Ethernet MAC, multiple communication interfaces such as CAN, UART, and SPI, and high-resolution ADCs. The unit supports an operating voltage range of 1.62 V to 3.6 V and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Integrates an ARM Cortex-M4 processor with hardware floating-point unit for efficient signal processing.
• Includes an on-chip Ethernet MAC with dedicated DMA for network connectivity.
• Features a USB On-The-Go (OTG) controller supporting host, device, and peripheral modes.
• Provides flexible memory architecture with up to 512 kB Flash and 128 kB SRAM.

Applications

• Industrial control systems requiring robust communication protocols
• Medical equipment utilizing precise analog-to-digital conversion
• Smart metering infrastructure with Ethernet or USB connectivity
• Automotive body electronics and infotainment subsystems

Procurement Notes

Verify the specific suffix 'CU' corresponds to the Lead-free, Green (RoHS, No Sb/Br) packaging and industrial temperature grade (-40°C to +85°C). Confirm the 100-LQFP footprint matches your PCB design constraints. Ensure compatibility with the 1.62V to 3.6V supply rails during system power planning. Cross-reference the datasheet revision to confirm peripheral availability and errata status before finalizing procurement.

Selection Notes

Select this component when a balance of processing power and peripheral richness is required for embedded applications. The Cortex-M4 core offers higher performance than Cortex-M3 alternatives while maintaining low power consumption. Consider the 120 MHz speed for complex algorithm execution. Evaluate the available I/O count and specific interface requirements like Ethernet or CAN against project needs. Compare memory sizes with other SAM4E variants if storage requirements differ.

Part Context

This part belongs to the Microchip SAM4E family of 32-bit MCUs based on the ARM Cortex-M4 core. The family targets cost-sensitive applications needing high performance and rich connectivity. The SAM4E series distinguishes itself with integrated Ethernet and USB capabilities alongside standard serial interfaces. It serves as a bridge between high-end processors and basic 8/16-bit controllers in industrial and consumer markets.

Replacement Considerations

Direct substitutes within the same package and pinout include other members of the SAM4E8C series with varying memory sizes, such as ATSAM4E8CB. Verify electrical characteristics and peripheral sets match exactly when considering cross-series replacements from different manufacturers.