AT97SC3204-X4A14-10

Application Specific Microcontrollers Overview

The AT97SC3204-X4A14-10 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 SHA-1 accelerator processes data at 20μs per 64-byte block. Communication with the host system occurs via a 33MHz Low Pin Count (LPC) bus, supporting SIRQ interrupts and CLKRUN for power management. The device includes internal EEPROM storage for RSA keys and 1756 bytes of user-defined NV storage.

Application Specific Microcontrollers Feature Summary

• Compliant with TCG TPM Version 1.2 and TIS Version 1.2 specifications
• Hardware asymmetric crypto engine with FIPS 140-2 compliant RNG
• Integrated Atmel AVR 8-bit RISC microprocessor
• Supports LPC interface with SIRQ and CLKRUN functionality

Application Specific Microcontrollers Applications

• Personal computer security modules
• Embedded systems requiring hardware authentication
• Mobile computers utilizing clock stopping for power savings

Application Specific Microcontrollers Procurement Notes

Verify package configuration against ordering codes: 28X1 denotes a 28-lead thin TSSOP, while 40ML1 indicates a 40-pad QFN. Confirm operating temperature range requirements, as the component is available in commercial (0°C to 70°C) and industrial (-40°C to +85°C) grades. Ensure compatibility with existing BIOS drivers and OS device software provided by the manufacturer for integration.

Application Specific Microcontrollers Selection Notes

Select the appropriate package based on board space constraints; the 28-lead TSSOP measures 4.4mm x 9.7mm, whereas the 40-pad QFN measures 6.0mm x 6.0mm. Choose the industrial temperature grade if operation below 0°C or above 70°C is required. Verify that the host system supports the 33MHz LPC interface protocol and provides the necessary 3.3V supply voltage.

Application Specific Microcontrollers Part Context

This component belongs to the AT97SC3204 series of Trusted Platform Modules. It serves as a single-chip turnkey solution for OEM and ODM manufacturers, integrating firmware directly onto the chip. The device is designed to replace discrete security components by consolidating cryptographic acceleration, key storage, and random number generation into one package.

Application Specific Microcontrollers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult Microchip Technology or authorized distributors for current equivalent offerings within the TPM family.