ATSAM4SD32CA-AU

Overview

The ATSAM4SD32CA-AU is a Microchip Technology microcontroller based on the ARM Cortex-M4 core. It features 32 MB of flash memory and 160 KB of SRAM, operating at a maximum clock frequency of 120 MHz. The device supports a supply voltage range of 1.62 V to 3.6 V and includes an integrated Trusted Platform Module (TPM) for security. It utilizes a 100-pin LQFP package and offers extensive connectivity options including USB, SPI, I2C, and UART interfaces.

Feature Summary

• Integrates a dedicated hardware TPM module for secure key storage and cryptographic operations.
• Dual-core architecture combining high-performance processing with specialized security functions.
• Supports multiple communication protocols including USB Full-Speed and standard serial interfaces.

Applications

• Trusted Platform Module implementations in computing systems
• Secure smart metering applications
• Industrial control systems requiring data integrity

Procurement Notes

Verify the specific suffix against official Microchip documentation to confirm package type and temperature range. Ensure compatibility with existing firmware architectures due to the dual-core nature of the SAM4SD series. Cross-reference pinouts with reference designs to validate peripheral assignments before finalizing procurement orders.

Selection Notes

Select this component when both high computational throughput and hardware-level security are required. The SAM4SD series is distinct from the single-core SAM4S or SAM4C variants due to its integrated TPM. Evaluate power consumption requirements against the 120 MHz operational speed and verify that the 100-pin LQFP footprint fits the target PCB layout constraints.

Part Context

This part belongs to the SAM4SD family, which extends the standard SAM4C capabilities by adding a certified TPM engine. It targets applications where secure boot and protected storage are critical. The device shares architectural similarities with other Cortex-M4 MCUs but differentiates itself through its specialized security subsystem integration.

Replacement Considerations

Direct substitutes within the same family include the ATSAM4SD16BA-AU for reduced memory configurations. Verify functional equivalence regarding the TPM implementation when considering cross-series replacements like the ATSAM4C series, as security features may differ.