ATSAME70Q21B-CFN

Overview

The ATSAME70Q21B-CFN is a 32-bit microcontroller based on the ARM Cortex-M7 core, operating at a maximum frequency of 300MHz. It features 2MB (2M x 8) of Flash memory and 384KB (384K x 8) of SRAM. The device is housed in a 144-LFBGA package with dimensions of 10x10mm. It supports a supply voltage range of 1.7V to 3.6V and includes 114 I/O pins. Connectivity options include Ethernet, CANbus, USB, SPI, UART, USART, I2C, LINbus, IrDA, MMC/SD/SDIO, QSPI, and EBI/EMI. Analog capabilities consist of 24-channel 12-bit ADCs and 2-channel 12-bit DACs.

Feature Summary

• Integrates an ARM Cortex-M7 processor with double-precision floating-point unit for high-performance computation.
• Includes a dedicated 10/100 Ethernet MAC controller for industrial network connectivity.
• Supports dual High-Speed USB interfaces for peripheral communication.
• Features dual CAN-FD controllers for robust automotive and industrial bus protocols.

Applications

• Industrial gateways requiring multiple communication protocols
• Motor control systems utilizing embedded motion algorithms
• Human-machine interface (HMI) panels with graphical displays

Procurement Notes

Verify the specific suffix 'CFN' corresponds to the 144-LFBGA (10x10mm) package variant when sourcing. Confirm RoHS compliance status and moisture sensitivity level requirements against your assembly process specifications. Ensure that the selected development tools, such as the ATSAMV71-XULT or AT91SAM-ICE, are compatible with the SAM E70 series architecture for effective debugging and programming during the design phase.

Selection Notes

Select this component when a single-chip solution is required for applications demanding both high computational density and extensive peripheral integration. The inclusion of Ethernet and dual CAN-FD makes it suitable for complex industrial networks. Compare storage capacities against other SAM E70 variants if smaller form factors or lower memory requirements better fit the board space constraints. Evaluate the 144-LFBGA footprint availability against your PCB manufacturing capabilities.

Part Context

This device belongs to the Microchip SAM E70 family of 32-bit microcontrollers designed for high-performance embedded applications. The family shares the Cortex-M7 core architecture but varies in memory size, package type, and peripheral sets. The ATSAME70Q21B-CFN represents a mid-to-high tier configuration within this series, balancing processing power with rich connectivity options for industrial automation and control systems.

Replacement Considerations

ATSAMS70Q21A-CFNT is a similar variant within the SAM S70 family offering comparable performance and memory in a different package format.