ATSAM4E8CB-CNR

Overview

The ATSAM4E8CB-CNR is a 32-bit microcontroller unit (MCU) based on the ARM Cortex-M4 core, operating at a maximum frequency of 120 MHz. It features 512 KB of in-system programmable flash memory and 128 KB of SRAM. The device includes an integrated Ethernet MAC with DMA controller, supporting IEEE 802.3 standards. Connectivity options include USB OTG, CAN, UART, USART, SPI, I2C, and SSC interfaces. It operates within a supply voltage range of 1.62 V to 3.6 V and supports industrial temperatures from -40°C to +85°C.

Feature Summary

• Integrated Ethernet MAC with DMA controller for high-speed network communication
• ARM Cortex-M4 processor with single-precision FPU for efficient digital signal processing
• USB On-The-Go (OTG) interface supporting host, device, and peripheral modes
• Comprehensive set of peripherals including multiple timers, ADCs, and DACs

Applications

• Industrial automation controllers requiring robust connectivity
• Smart energy metering systems with Ethernet and USB capabilities
• Medical devices needing precise analog-to-digital conversion
• Automotive infotainment and gateway applications

Procurement Notes

Verify the specific suffix 'N' indicates lead-free RoHS compliance and confirms the extended temperature range (-40°C to +85°C). Confirm the package type matches the design requirements, as this part typically uses a TFBGA or LQFP variant depending on the exact sub-model designation. Ensure ESD handling procedures are followed during assembly due to the sensitivity of the CMOS technology used in the SAM4E series.

Selection Notes

Select this component when an application requires both high-performance processing and native Ethernet connectivity without external PHY chips. Compare against the ATSAM4S series if Ethernet is not needed, as the SAM4E offers superior networking features. Consider the ATSAME70 series if higher clock speeds or larger memory capacities are required for complex real-time operating system tasks.

Part Context

This MCU belongs to the Microchip SAM4E family, designed for cost-sensitive embedded applications requiring advanced connectivity. It bridges the gap between standard MCUs and application processors by integrating an Ethernet MAC directly onto the silicon. The family targets markets such as smart grids, industrial IoT, and medical equipment where reliable data transmission and processing power are critical.

Replacement Considerations

Direct pin-compatible replacements within the same package may be limited. Check the ATSAM4E8CA variant for similar specifications but different packaging. For functional upgrades, consider the ATSAME70 series for increased performance. Verify that any substitute maintains the required Ethernet MAC functionality and thermal characteristics.