ATSAMS70N21A-CNT

Overview

The ATSAMS70N21A-CNT is a microcontroller from the Microchip SAM S70 series, featuring an ARM Cortex-M7 core operating at a maximum frequency of 300 MHz. It integrates 2 MB of Flash memory and 384 kB of SRAM within a 100-pin LFBGA package. The device supports a data bus width of 32 bits and includes 75 general-purpose I/Os. Peripheral interfaces include SPI, UART, USART, USB, and I2C. Analog capabilities consist of 12-bit ADC and DAC resolution with 10 ADC channels. Operating voltage ranges from 1.7 V to 3.6 V, with an analog supply of 3.3 V. The unit functions within a temperature range of -40°C to +105°C.

Feature Summary

• High-performance processing via ARM Cortex-M7 core architecture
• Integrated non-volatile memory with substantial SRAM capacity
• Comprehensive peripheral connectivity including USB and serial interfaces
• On-chip analog conversion with dedicated timer and counter modules

Applications

• Industrial automation control systems
• Human-machine interface (HMI) displays
• Medical equipment processing units
• Automotive instrument clusters

Procurement Notes

Verify the specific suffix 'CNT' against official Microchip documentation to confirm tape-and-reel packaging status, as datasheets often list tray options for this part number. Confirm moisture sensitivity level (MSL 3) requirements for storage and handling. Ensure the 100-pin LFBGA footprint matches the target PCB design constraints before ordering.

Selection Notes

Select this component when high computational throughput is required alongside moderate memory resources in a compact form factor. The 100-pin package limits pin count compared to larger variants, making it suitable for designs where external memory expansion is unnecessary. Evaluate thermal management needs given the 105°C maximum operating temperature rating.

Part Context

This model belongs to the SAM S70 family of advanced 32-bit microcontrollers designed for complex applications. The N21 variant specifically denotes the 2 MB Flash and 384 kB SRAM configuration within the 100-pin package line. It shares architectural similarities with other S70 models but offers distinct memory and pinout characteristics tailored for space-constrained embedded solutions.

Replacement Considerations

ATSAMS70N21A-CN serves as a verified alternative offering identical electrical specifications and functionality, differing primarily in tray packaging instead of tape-and-reel.