ATSAME70J21B-ANT

Overview

The ATSAME70J21B-ANT is a 32-bit ARM Cortex-M7 microcontroller from the SAM E70 series, operating at a maximum clock frequency of 300 MHz. It integrates 2 MB of Flash memory and 384 KB of SRAM within a 144-pin LFBGA package. The device supports a supply voltage range of 1.7 V to 3.6 V and functions across an industrial temperature range of -40°C to +105°C. Connectivity options include Ethernet, CANbus, I2C, SPI, UART/USART, LINbus, SSC, and IrDA interfaces.

Feature Summary

• High-performance processing via ARM Cortex-M7 core with DSP instructions
• Integrated Ethernet MAC with dedicated DMA for network communication
• Large on-chip memory configuration supporting complex application storage
• Comprehensive peripheral set including multiple serial controllers and timers

Applications

• Industrial automation control systems
• Ethernet-based smart metering devices
• Human-machine interface (HMI) panels
• Motor control applications requiring high-speed processing

Procurement Notes

Verify the specific suffix ANT indicates the tape and reel packaging format when ordering. Confirm the 144-pin LFBGA footprint compatibility with your PCB layout. Ensure the voltage domain matches the 1.7V to 3.6V specification. Check for RoHS compliance status in the latest datasheet revision. Validate lead times as they may vary based on production schedules.

Selection Notes

Select this component when 2 MB of program storage and 384 KB of RAM are required for large-scale embedded applications. The 300 MHz Cortex-M7 core is suitable for tasks involving digital signal processing or complex protocol handling. Choose the LFBGA package if space constraints favor a compact surface-mount solution over QFP alternatives. Consider the integrated Ethernet controller if network connectivity is a primary system requirement.

Part Context

This part belongs to the Microchip SAM E70 family, designed for high-performance embedded applications. It shares architectural similarities with other Cortex-M7 MCUs but offers specific memory and peripheral configurations tailored for industrial and networking uses. The J21 variant specifically denotes the 2 MB Flash and 384 KB SRAM capacity within the E70 lineup.

Replacement Considerations

Consult official substitution lists for pin-compatible or functionally equivalent parts within the SAM E70 series. Verify that alternative components maintain the same 300 MHz speed grade and memory sizes. Ensure any substitute supports the required LFBGA-144 package or provides a compatible adapter solution.