AT97SC3205T-X3A14-10

Application Specific Microcontrollers Overview

The AT97SC3205T-X3A14-10 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 supports I2C communication at 400kHz Fast Mode or 100kHz Standard Mode. It features FIPS-140-2 certification for its RNG, HMAC, AES, SHA, and RSA engines. The component operates on a 3.3V supply voltage and includes 2066 bytes of NV storage for user-defined data.

Application Specific Microcontrollers Feature Summary

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

Application Specific Microcontrollers Applications

• Embedded system security modules
• Hardware physical presence indicators
• Secure boot and authentication systems

Application Specific Microcontrollers Procurement Notes

Verify the specific package type required for the design, as the AT97SC3205T series is available in both 28-lead Thin TSSOP and 32-pad QFN packages. Confirm that the ordering suffix corresponds to the desired temperature range and packaging format. Ensure compatibility with the host system's I2C pull-up requirements for stable operation at 400kHz.

Application Specific Microcontrollers Selection Notes

Select the appropriate package based on board space constraints; the 28-pin TSSOP measures 4.4mm x 9.7mm, while the 32-pin QFN measures 4.0mm x 4.0mm. Consider the operational temperature range, choosing between Commercial (0°C to 70°C) or Industrial (-40°C to 85°C) variants. Ensure the design provides adequate decoupling capacitance (2200pF to 4700pF) close to VCC pins to maintain signal integrity.

Application Specific Microcontrollers Part Context

The AT97SC3205T is part of the Atmel (now Microchip Technology) security IC portfolio designed for embedded applications. It serves as a single-chip turnkey solution for implementing trusted platform functionalities without requiring external secure elements. The device simplifies integration by combining cryptographic processing, key storage, and TPM protocol handling into one component.

Application Specific Microcontrollers Replacement Considerations

Consult the official product selection guide for direct equivalents within the AT97SC3205T family. Verify pinout compatibility if substituting between TSSOP and QFN packages, as pin assignments differ. Ensure any replacement maintains TCG TPM 1.2 compliance and FIPS-140-2 certification status.