AT97SC3204-X2A16-00

Overview

The AT97SC3204-X2A16-00 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 occurs via a 33MHz Low Pin Count (LPC) bus, supporting SIRQ and CLKRUN for power management. The device includes internal EEPROM storage for RSA keys and 1756 bytes of user-defined NV storage.

Feature Summary

• Compliant with TCG TPM Version 1.2 and TCG PC Client-Specific TPM Interface Specification (TIS) Version 1.2
• Hardware asymmetric crypto engine with FIPS 140-2 compliant Random Number Generator (RNG)
• Integrated Atmel AVR RISC microprocessor with internal EEPROM for key storage
• Supports 3.3V supply voltage with LPC interface operating up to 33MHz

Applications

• Personal computers requiring hardware-based security modules
• Embedded systems needing trusted platform authentication
• Mobile computers utilizing clock stopping for power savings

Procurement Notes

Verify package availability as the component is offered in 28-lead thin TSSOP, 28-lead wide TSSOP, or 40-pad QFN configurations. Confirm temperature range requirements against commercial (0°C to 70°C) and industrial (-40°C to +85°C) options. Ensure system design accommodates the specific pinout and pitch dimensions for the selected package variant.

Selection Notes

Select the appropriate package based on board space constraints: 28X1 (thin TSSOP), 28-lead wide TSSOP, or 40ML1 (QFN). Verify that the host system supports the 33MHz LPC interface protocol. Consider thermal requirements when choosing between commercial and industrial temperature grades. Ensure BIOS drivers are available for the target operating system integration.

Part Context

This component belongs to the AT97SC3204 series of Trusted Platform Modules manufactured by Microchip Technology (formerly Atmel). The series provides turnkey security solutions for OEM and ODM manufacturers, integrating firmware and hardware acceleration into a single chip. It serves as a foundational security element for PC client platforms and other embedded applications requiring cryptographic authentication.

Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source material. Consult official Microchip documentation for cross-reference information.