AT97SC3205T-H3M4400B

Application Specific Microcontrollers Overview

The AT97SC3205T-H3M4400B is a Trusted Platform Module (TPM) compliant with TCG TPM Version 1.2 specifications. 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 voltage 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 non-volatile user-defined data storage and is available in 28-lead Thin TSSOP or 32-pad QFN packages.

Application Specific Microcontrollers Feature Summary

• Compliant with TCG TPM Version 1.2 Specification
• Hardware Asymmetric Crypto Engine with FIPS-140-2 certification
• Internal EEPROM Storage for RSA Keys
• I2C Interface supporting 400kHz Fast Mode/100kHz Standard Mode

Application Specific Microcontrollers Applications

• Embedded systems requiring trusted platform module integration
• Secure hardware and firmware design implementations
• Applications utilizing hardware physical presence indicators

Application Specific Microcontrollers Procurement Notes

Verify the specific package type required for the application, as the AT97SC3205T series is offered in both 28-lead Thin TSSOP and 32-pad QFN configurations. Confirm that the operational temperature range meets the system requirements, as commercial and industrial variants are available. Ensure proper decoupling capacitors (2200pF to 4700pF) are placed close to VCC pins to maintain reliable operation.

Application Specific Microcontrollers Selection Notes

Select the appropriate package based on board space constraints; the 32-pin QFN offers a compact 4.00mm x 4.00mm footprint, while the 28-lead TSSOP provides a larger body size. Consider the interface speed requirements when designing pull-up resistors for SM_DAT and SM_CLK lines, as values around 800Ω and 1.5KΩ respectively function properly at 400kHz. Ensure GPIO pins are tied high or low if unused to prevent floating states.

Application Specific Microcontrollers Part Context

The AT97SC3205T is part of the AT97SC3205 family of security ICs designed by Microchip Technology (formerly Atmel). This family implements the Trusted Computing Group (TCG) specification for Trusted Platform Modules. The device serves as a single-chip turnkey solution for integrating security features into embedded systems without requiring complex external components.

Application Specific Microcontrollers Replacement Considerations

Publicly confirmed substitute part numbers for the AT97SC3205T-H3M4400B are not available in the provided documentation. Users should consult official Microchip Technology resources for current equivalent or successor components.