ATSAM4S16CA-AN

Overview

The ATSAM4S16CA-AN is a 32-bit microcontroller from the Microchip SAM4S series, built on the ARM Cortex-M4 core. It operates at a maximum frequency of 120 MHz and integrates 1 MB (1M x 8) of embedded Flash memory with 128 KB of SRAM. The device features a 100-LQFP package and supports a supply voltage range of 1.62 V to 3.6 V. Key peripherals include a full-speed USB 2.0 device port, multiple communication interfaces such as SPI, I2C, USART, and SSC, along with 16-channel 12-bit ADCs and two 12-bit DACs.

Feature Summary

• Integrates an ARM Cortex-M4 processor with DSP instruction set and Memory Protection Unit for secure high-performance execution.
• Includes a full-speed USB 2.0 device interface with an on-chip transceiver and substantial FIFO buffer for data handling.
• Provides extensive connectivity through multiple serial communication controllers including SPI, I2C, USART, and SSC.
• Features integrated analog-to-digital and digital-to-analog converters for precise signal processing applications.

Applications

• Industrial control systems requiring robust communication protocols
• USB-enabled peripheral devices and host controllers
• Smart metering and energy management equipment
• Medical instrumentation with analog signal acquisition needs

Procurement Notes

Verify the specific suffix 'AN' against official Microchip documentation to confirm the extended temperature range and material compliance status. Ensure the pinout matches the 100-LQFP footprint requirements for your PCB design. Cross-reference the datasheet revision history for any recent packaging or assembly changes that may affect compatibility.

Selection Notes

Select this component when a balance of high memory capacity and rich peripheral sets is required within a 100-pin form factor. It is suitable for designs needing USB connectivity without external PHYs. Consider the thermal performance of the LQFP package if operating near the upper temperature limits. Compare RAM sizes against other SAM4S variants if memory constraints are critical.

Part Context

This part belongs to the SAM4S family, which targets cost-sensitive applications compared to the dual-core SAM4C series. It shares architectural similarities with the SAM3S but adds enhanced security features and USB capabilities. The 1 MB Flash variant offers significant program storage for complex firmware implementations in industrial and consumer electronics.

Replacement Considerations

Direct pin-compatible replacements within the same package include the ATSAM4S16BA-AU, though differences in temperature range and security levels must be verified. Other SAM4S variants with different memory sizes may require software adaptation but share the same core architecture.