AT97SC3205T-U3A16-20

Overview

The AT97SC3205T-U3A16-20 is a Trusted Platform Module (TPM) compliant with the TCG TPM Version 1.2 specification. It integrates an Atmel AVR RISC microprocessor, hardware asymmetric crypto engine, and internal EEPROM for RSA key storage. The device operates on a 3.3V supply and supports I2C communication at 400kHz Fast Mode or 100kHz Standard Mode. It includes a FIPS-140-2 certified high-quality Random Number Generator (RNG), HMAC, AES, SHA, and RSA engines. The component provides 2066 bytes of NV storage for user-defined data and is available in 28-lead Thin TSSOP or 32-pad QFN packages.

Feature Summary

• Compliant with Trusted Computing Group (TCG) TPM Version 1.2 Specification
• FIPS-140-2 Certified Hardware Crypto Engine including RNG, HMAC, AES, SHA, and RSA
• Integrated Atmel AVR RISC Microprocessor with Internal EEPROM Storage
• I2C Interface supporting 400kHz Fast Mode and 100kHz Standard Mode

Applications

• Embedded systems requiring trusted platform module integration
• Hardware security modules utilizing FIPS-certified cryptographic primitives
• Systems requiring secure storage for RSA keys via internal EEPROM

Procurement Notes

Verify the specific ordering suffix U3A16-20 against the manufacturer's complete catalog number ordering code addendum, as the summary datasheet references additional documentation for full part number details. Confirm package availability (28-pin Thin TSSOP or 32-pad QFN) and operational temperature range requirements prior to procurement.

Selection Notes

Select this component for designs requiring TCG TPM 1.2 compliance with I2C interface connectivity. Ensure the system design accommodates the 3.3V supply voltage and provides appropriate decoupling capacitors (2200pF to 4700pF) close to VCC pins. Verify that the chosen package (TSSOP or QFN) fits the PCB layout constraints and thermal requirements.

Part Context

The AT97SC3205T series represents a single-chip turnkey solution for embedded security. It combines an 8-bit AVR RISC CPU with dedicated cryptographic hardware and non-volatile memory. This integration allows for secure boot, identity management, and data protection within constrained embedded environments without requiring external security components.

Replacement Considerations

Consult the AT97SC3205T Summary Part Number Selection Guide for alternative package options or temperature ranges. Verify compatibility with existing firmware if substituting between different package types such as the 28X1 TSSOP and 32M3 QFN variants.