AT97SC3204-X2A1A-20

Overview

The AT97SC3204-X2A1A-20 is a Trusted Platform Module (TPM) compliant with TCG TPM version 1.2 and TCG PC Client-specific TPM Interface Specification (TIS) version 1.2. It integrates an Atmel AVR RISC microprocessor, hardware asymmetric crypto engine, and internal EEPROM for RSA key storage. The device features a 33MHz Low Pin Count (LPC) bus interface, supporting SIRQ and CLKRUN for power management. It includes a FIPS 140-2 compliant Random Number Generator (RNG) and provides 1756 bytes of NV storage for user-defined data. Operating on a 3.3V supply, it supports commercial (0°C to 70°C) and industrial (-40°C to 85°C) temperature ranges.

Feature Summary

• Fully compliant with TCG TPM v1.2 and TCG PC Client-specific TIS v1.2 specifications
• Hardware RSA signature acceleration: 2048-bit in 200ms, 1024-bit in 40ms
• SHA-1 accelerator performance of 20μs per 64-byte block
• Integrated Atmel AVR 8-bit RISC CPU with dynamic internal memory management for multiple RSA keys

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's addendum for complete catalog details. Confirm package availability, as the device is offered in 28-lead thin TSSOP, 28-lead wide TSSOP, or 40-pad QFN packages. Ensure the selected variant matches the required operating temperature range for the target application environment.

Selection Notes

Select the appropriate package based on board space constraints: 28X1 (thin TSSOP), 28A1 (wide TSSOP), or 40ML1 (QFN). Choose between commercial (0°C to 70°C) and industrial (-40°C to 85°C) temperature ratings according to environmental requirements. Verify that the host system supports the 33MHz LPC interface protocol for proper integration.

Part Context

This component belongs to the AT97SC3204 series of Trusted Platform Modules designed by Atmel (now Microchip Technology). It serves as a single-chip turnkey solution for implementing hardware security in PCs and embedded systems, providing cryptographic acceleration and secure key storage capabilities defined by the Trusted Computing Group standards.

Replacement Considerations

Consult the official datasheet addendum for alternative part numbers within the AT97SC3204 family. Ensure any substitute maintains compatibility with TCG TPM v1.2 and LPC interface requirements.