AT97SC3205-G3M45-20

Overview

The AT97SC3205-G3M45-20 is a Trusted Platform Module (TPM) compliant with TCG TPM Version 1.2 and TIS Version 1.3 specifications. It integrates an Atmel AVR RISC microprocessor, hardware asymmetric crypto engine, and internal EEPROM for RSA key storage. The device supports the Serial Peripheral Interface (SPI) protocol at frequencies up to 45MHz. It includes FIPS-140-2 certified components such as a high-quality Random Number Generator (RNG), HMAC, AES, SHA, and RSA engines. The module provides 2066 bytes of non-volatile user-defined data storage and operates on a 3.3V supply voltage.

Feature Summary

• Compliant with TCG TPM Version 1.2 and TIS Version 1.3
• Integrated Atmel AVR RISC Microprocessor and Hardware Crypto Engine
• FIPS-140-2 Certified RNG, HMAC, AES, SHA, and RSA Engines
• SPI Interface supporting up to 45MHz clock frequency

Applications

• Personal computers requiring TPM integration
• Embedded systems needing secure authentication
• Hardware platforms utilizing SPI communication protocols

Procurement Notes

Verify package availability against specific ordering codes. The summary datasheet indicates lead-free RoHS compliance. Confirm temperature range requirements, as commercial and industrial options exist within the family. Ensure firmware compatibility with target operating systems before procurement.

Selection Notes

Select based on required interface speed and package type. The device supports SPI up to 45MHz, though typical PC operation ranges from 24MHz to 33MHz. Choose between 28-lead Thin TSSOP or 32-pad QFN packages depending on board layout constraints. Verify that the selected variant meets the necessary environmental temperature specifications for the intended application.

Part Context

This component belongs to the AT97SC3205 series of security ICs designed by Microchip Technology (formerly Atmel). It serves as a single-chip turnkey solution for implementing trusted platform modules in embedded environments. The series focuses on providing robust cryptographic capabilities integrated directly with an 8-bit RISC processor architecture.

Replacement Considerations

Consult official documentation for direct substitutes. Variants within the AT97SC3205 family may differ by package (TSSOP vs. QFN) or temperature rating. Cross-referencing pinouts and electrical characteristics is essential when considering alternative components.