ATSAM4S16CB-CFNR

Overview

The ATSAM4S16CB-CFNR is a 32-bit microcontroller from the Microchip SAM4S series, featuring an ARM Cortex-M4 core. It integrates 1 MB of embedded Flash memory and 160 kB of SRAM. The device supports a maximum clock frequency of 120 MHz and includes a 12-bit ADC with 16 channels. It provides 79 general-purpose I/O lines and operates within a supply voltage range of 1.62 V to 3.6 V. The component is housed in a 100-pin VFBGA package and is rated for industrial temperature operation between -40°C and +85°C.

Feature Summary

• Integrates an ARM Cortex-M4 processor with DSP instruction set support and Memory Protection Unit (MPU).
• Includes high-speed USB 2.0 Device interface with on-chip transceiver and up to 8 bidirectional endpoints.
• Features multiple communication peripherals including USARTs, SPI, SSC, I2C, and IrDA interfaces.
• Supports low-power operation with Sleep and Backup modes, achieving current consumption down to 1 µA.

Applications

• Industrial control systems requiring secure data processing.
• Smart metering applications utilizing built-in security features.
• Consumer electronics devices needing efficient power management.
• Medical equipment requiring reliable real-time processing capabilities.

Procurement Notes

Verify the specific suffix CFNR against official Microchip documentation to confirm the tape-and-reel packaging configuration. Ensure the procurement order matches the exact part number to avoid discrepancies in pinout or electrical characteristics. Cross-reference the datasheet revision history for any recent errata or design changes that may impact integration. Confirm compliance with RoHS and REACH regulations as stated in the manufacturer's environmental declarations prior to finalizing purchase orders.

Selection Notes

Select this component when a balance of high-performance processing and extensive connectivity is required. The 1 MB Flash capacity suits complex firmware applications, while the 120 MHz speed ensures responsive execution. Consider the 100-pin VFBGA package constraints for PCB layout density. Evaluate the peripheral count against system requirements to ensure sufficient USART, SPI, and ADC channels are available without external multiplexing.

Part Context

This microcontroller belongs to the SAM4S family, designed for cost-sensitive applications compared to the dual-core SAM4C series. It shares pin compatibility with previous generations like SAM3N and SAM3S in certain packages, facilitating migration strategies. The architecture emphasizes energy efficiency and security, making it suitable for IoT gateways and embedded controllers where power consumption and code protection are critical design parameters.

Replacement Considerations

ATSAM4S16CA-CFU: Pin-compatible alternative with different operating temperature range.

FAQ

Does the ATSAM4S16CB-CFNR include hardware cryptographic acceleration?

Yes, the device integrates a Hardware Security Module (HSM) supporting AES, DES, Triple DES, RSA, ECC, and SHA-1/SHA-256 algorithms for secure boot and data encryption.

What is the maximum data transfer rate for the USB interface?

The integrated USB 2.0 Device controller supports a maximum transfer rate of 12 Mbps, compliant with Full-Speed USB specifications.