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Trusted Platform Module

Complete Security for PCs and Embedded Systems

The Microchip FIPS 140-2 Certified Trusted Platform Module (TPM) provides strong hardware-based public key (RSA) security for both personal computers and embedded processors on a single chip. It is a complete turnkey system that integrates industry-leading Microchip AVR® microcontroller architecture, Microchip EEPROM technology, and Microchip security technology. Implementing version 1.2 of the Trusted Computing Group (TCG) specification for TPMs, the chip supports secure boot via platform integrity measurements, intellectual property protection, authentication, and secure communications. The AT97SC* series is offered in three different interfaces: SPI, LPC, and I2C. All revisions are supported in both Commercial and Industrial Grades. The Trusted Platform Module Embedded Development Kit received a 2008 Readers Tech Choice Award from eg3, an independent news source devoted to electronic design.

Download the TPM Selection Guide

Key Features

  • Turnkey solution — The TPM includes integrated, protected nonvolatile storage for cryptographic keys, secrets, and authorization information.
  • Full TCG compliance — According to TCG, applications based on the trusted computing infrastructure exhibit superior security governance and risk management.
  • Hardware security — The TPM includes a high-quality hardware random number generator, active shielding, and a variety of tamper-detection and response circuits.
  • High performance — The TPM’s cryptographic accelerator can compute a 2048-bit RSA signature in 200ms.
  • Energy savings — The TPM supports SIRQ for interrupts and CLKRUN to permit clock stopping for power savings in mobile computers.
  • Software support — BIOS and hardware drivers are available for both Windows and Linux; third-party system and application software is also available.
  • Two interfaces — There is a 33 MHz LPC interface for PC integration and a 2-wire interface for non-PC and embedded computing systems.
Device Family Summary Benefit Applications Technologies Key Parameters
TCG Version 1.2 Standards-based hardware security 

Network authentication 

Internet 'compatible' 

Turnkey solution 

Full TCG compliance 

High performance 

Software support libraries

Two interfaces – LPC and 2-wire
System, device and network authentication 

Intellectual property protection, system integrity and secure communications.

AVR Microcontrollers

EEPROM technology 

Hardware Security technology 

Cryptographic accelerator 

Random Number Generator 

Anonymous ID

TPM 

Trusted Platform Module 

PC security 

Tablet security 

TCG 

Trusted Computing Group 

RSA, PKI
Tabs / Security ICs / Trusted Platform Module
Documents
Tools and Software

Datasheets

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AT97SC3204 LPC Interface Summary
(file size: 295KB, 8 pages, revision E, updated: 03/2013)
TPM LPC interface datasheet summary. This is a summary document. The complete document is available under NDA. For more information, please contact your local Microchip sales office.
PDF

AT97SC3205 SPI Interface Summary
(file size: 316KB, 10 pages, revision A, updated: 02/2014)
TPM SPI interface datasheet summary. This is a summary document. The complete document is available under NDA. For more information, please contact your local Microchip sales office.
PDF

AT97SC3205T I²C Interface Summary
(file size: 318KB, 10 pages, revision A, updated: 02/2014)
TPM I²C interface datasheet summary. This is a summary document. The complete document is available under NDA. For more information, please contact your local Microchip sales office.
PDF

Microchip Trusted Platform Module Ordering Code Addendum Complete
(file size: 72KB, 2 pages, revision B, updated: 07/2012)
Microchip AT97SC3204 and AT97SC3204T TPM Ordering Code Addendum.
PDF

Application Notes

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Microchip AT97SC3205 TPM Power Supply Decoupling Guide
(file size: 156KB, 3 pages, revision B, updated: 07/2014)

PDF

Microchip TPM Part Number Selection Guide
(file size: 91KB, 5 pages, revision A, updated: 07/2015)
PDF

Microchip TPM Power Supply Decoupling Guide
(file size: 157KB, 3 pages, revision B, updated: 04/2014)
PDF

System Design Manufacturing Recommendations for Microchip TPM Devices
(file size: 214KB, 27 pages, revision A, updated: 01/2014)

PDF

Brochures and Flyers

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Microchip System Peripheral and Memory Products Brochure
(file size: 478KB, 8 pages, revision D, updated: 12/2012)

PDF

Microchip TPM Development and Evaluation Kit Flyer
(file size: 506KB, 2 pages, revision A, updated: 04/2015)

PDF

Ordering Code Addendum

Title

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AT97SC3205/3205T Ordering Code Addendum
(file size: 86.5KB, 3 pages, revision B, updated: 06/2014)
Microchip AT97SC3205 SPI and AT97SC3205T I²C TPM Ordering Code Addendum.
PDF

AT97SC3205T Ordering Code Addendum
(file size: 86.6KB, 2 pages, revision A, updated: 12/2013)
Microchip AT97SC3205T TPM Ordering Code Addendum.

PDF

Microchip Trusted Platform Module Ordering Code Addendum
(file size: 83KB, 3 pages, revision D, updated: 06/2014)
Microchip AT97SC3204 and AT97SC3204T TPM Ordering Code Addendum.
AT97SC3204T is Not Recommended for New Design. Replaced by AT97SC3205T.

PDF

Schematics

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AT97SC3204 Schematic
(file size: 12KB, 1 pages, revision 1, updated: 02/2014)
Hardware Reference Schematic for the AT97SC3204

PDF

AT97SC3205P/3205T-SDK2 Schematics
(file size: 93KB, 1 pages, revision 3, updated: 10/2013)
Hardware Reference Schematic for the AT97SC3205P-SDK2 SPI and AT97SC3205T-SDK2 I²C Development Kits

PDF

User Guides

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AAT97SC3205T-SDK2 and AT97SC3205P-SDK2 Development Kit User Guide
(file size: 518KB, 15 pages, revision D, updated: 05/2014)
A user guide for the AT97SC3205T-SDK2 I²C and AT97SC3205P-SDK2 SPI Development Kits.
PDF

White Papers

Title

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Security for Intelligent, Connected IoT Edge Nodes
(file size: 111KB, 12 pages, revision B, updated: 04/2013)

PDF

Development Kit

Title

Description

AT97SC3205P-SDK2 Development Kit

Trusted Platform Module (SPI Interface) Development Kit

AT97SC3205T-SDK2 Development Kit

Trusted Platform Module (I²C Serial Interface) Development Kit

Software Tools

Title

Description

Windows XP Drivers for Trusted Platform Module

Windows XP Drivers for Trusted Platform Module.