AT97SC3205-H3M45-20

Application Specific Microcontrollers Overview

The AT97SC3205-H3M45-20 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, with typical PC operating ranges between 24MHz and 33MHz. 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 non-volatile user-defined data storage.

Application Specific Microcontrollers Feature Summary

• Compliant with TCG TPM Version 1.2 and TIS Version 1.3 specifications
• Integrated Atmel AVR RISC Microprocessor with Hardware Asymmetric Crypto Engine
• FIPS-140-2 Certified RNG, HMAC, AES, SHA, and RSA Engines
• Internal EEPROM Storage for RSA Keys and 2066 bytes NV User Data

Application Specific Microcontrollers Applications

• Personal computers and embedded systems security modules
• Hardware physical presence indication via PP/GPIO pin
• Secure boot and platform integrity verification in OEM/ODM designs

Application Specific Microcontrollers Procurement Notes

Verify package type availability as the AT97SC3205 series offers both 28-lead Thin TSSOP and 32-pad QFN options. Confirm temperature range requirements against commercial (0°C to 70°C) and industrial (-40°C to +85°C) ratings. Ensure firmware integration aligns with the turnkey solution provided by the manufacturer. Check for specific ordering suffixes that may denote package or temperature variations.

Application Specific Microcontrollers Selection Notes

Select the appropriate package based on board space constraints: 28X1 for 28-lead thin TSSOP or 32M3 for 32-pad QFN. Consider the SPI clock frequency limits, noting that typical PC operation ranges from 24MHz to 33MHz, while the device supports up to 45MHz. Ensure decoupling capacitors (2200pF to 4700pF) are placed within 5mm of VCC pins to maintain signal integrity and reliable operation.

Application Specific Microcontrollers Part Context

The AT97SC3205 is part of the Atmel/Microchip TPM family designed for single-chip turnkey security solutions. It replaces discrete security components by integrating the crypto engine, RNG, and microprocessor onto one die. The device is intended for OEMs and ODMs requiring certified security features for PC clients and embedded applications without complex external circuitry.

Application Specific Microcontrollers Replacement Considerations

Direct replacements must match the TCG TPM 1.2 specification and SPI interface. Verify pin compatibility for 28-pin TSSOP or 32-pin QFN packages. Ensure the substitute supports the same 3.3V supply and FIPS-140-2 certification if required. Firmware compatibility should be assessed as the AT97SC3205 is delivered as a turnkey solution with integrated firmware.