AT97SC3204T-U2A1B-10

Overview

The AT97SC3204T-U2A1B-10 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 non-volatile user-defined data storage. 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 RISC microprocessor 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 power savings

Procurement Notes

Verify the specific package type required for the U2A1B suffix against official ordering guides, as the summary datasheet lists 28X1 (thin TSSOP) and 40ML1 (QFN). Confirm that the full datasheet under NDA does not contain additional electrical constraints or pinout variations compared to the public summary. Ensure compatibility with existing BIOS drivers and operating system device drivers provided by Microchip/Atmel.

Selection Notes

Select this component when TCG TPM v1.2 compliance is mandatory for the target platform. Choose based on the required operating temperature range (commercial vs. industrial) and available PCB space for either the 28-lead thin TSSOP or 40-pad QFN packages. Verify that the host system supports the 33MHz LPC interface protocol and can manage the SIRQ and CLKRUN signals effectively.

Part Context

This part belongs to the AT97SC3204 series of Trusted Platform Modules manufactured by Microchip Technology (formerly Atmel). The series offers a turnkey solution for OEMs and ODMs, integrating firmware directly onto the chip. It serves as a foundational security component for establishing hardware roots of trust in computing devices.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult Microchip Technology for current alternatives or updated versions within the TPM product line.