AT97SC3204-X4A14-20

Application Specific Microcontrollers Overview

The AT97SC3204-X4A14-20 is a security integrated circuit implementing the Trusted Computing Group (TCG) Trusted Platform Module (TPM) version 1.2 specification. It features an Atmel AVR RISC microprocessor and a hardware asymmetric crypto engine capable of computing a 2048-bit RSA signature in 200ms and a 1024-bit RSA signature in 40ms. The device communicates via a 33MHz Low Pin Count (LPC) bus with 8-bit data width. It includes internal EEPROM storage for RSA keys, 1756 bytes of user-defined NV storage, and a FIPS 140-2 compliant Random Number Generator. The component operates on a 3.3V supply voltage.

Application Specific Microcontrollers Feature Summary

• Fully compliant with TCG TPM Version 1.2 and TCG PC Client-Specific TPM Interface Specification (TIS) Version 1.2
• Hardware asymmetric crypto engine supporting 2048-bit RSA signatures in 200ms and SHA-1 acceleration at 20μs per 64-byte block
• Integrated Atmel AVR 8-bit RISC microprocessor with internal EEPROM for key storage and 1756 bytes of user data
• Supports SIRQ interrupts and CLKRUN for power savings in mobile computers

Application Specific Microcontrollers Applications

• Personal computer security modules
• Embedded systems requiring hardware-based authentication
• Mobile computers utilizing LPC interface clock stopping

Application Specific Microcontrollers Procurement Notes

Verify package configuration against ordering codes; X4 indicates 40-pad QFN. Confirm temperature range requirements as the series supports both commercial and industrial grades. Check for NDA-restricted full datasheet access if detailed electrical characteristics are required beyond this summary.

Application Specific Microcontrollers Selection Notes

Select based on required operating temperature: commercial (0°C to 70°C) or industrial (-40°C to +85°C). Ensure host system supports the 33MHz LPC interface. Verify physical space constraints for the 40-pad QFN package (6.0mm x 6.0mm body).

Application Specific Microcontrollers Part Context

This component belongs to the AT97SC3204 family of Trusted Platform Modules. It serves as a single-chip turnkey solution for OEM and ODM manufacturers, providing secure hardware and firmware design. The device integrates necessary BIOS drivers and manufacturing support software for board assembly initialization.

Application Specific Microcontrollers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.