Table of Contents

Introduction......................................................................................................................1

Features.......................................................................................................................... 1

1. Pin Configurations and Pinouts................................................................................. 4

2. Block Diagram........................................................................................................... 6

3. Design Considerations.............................................................................................. 8

3.1.

SPI Bit Order................................................................................................................................ 8

3.2.

TPM SPI is Slave Only................................................................................................................. 8

3.3.

Wait State.....................................................................................................................................8

3.4.

Available Key Storage.................................................................................................................. 8

3.5.

Standard Mode Self-Test..............................................................................................................8

4. TCG PC Client Platform TPM Profile (PTP) Specification Summary........................ 9

5. TCG TPM Command Data Bytes Transfer Format..................................................10

5.1.

TCG TPM Command Protocol................................................................................................... 10

5.2.

TCG Command - Incoming Operands and Sizes.......................................................................10

5.3.

TCG Command - Outgoing Operands and Sizes.......................................................................10

6. Background Operations...........................................................................................12

7. Package Drawings...................................................................................................13

7.1.

8 Pin UDFN Package Drawing................................................................................................... 13

7.2.

TPM 2.0 Standard Packages..................................................................................................... 16

7.3.

Package Marking........................................................................................................................16

8. Revision History.......................................................................................................17

The Microchip Web Site................................................................................................ 18

Customer Change Notification Service..........................................................................18

Customer Support......................................................................................................... 18

Product Identification System........................................................................................19

Microchip Devices Code Protection Feature................................................................. 19

Legal Notice...................................................................................................................20

Trademarks................................................................................................................... 20

Quality Management System Certified by DNV.............................................................21

ATTPM20P

Datasheet Summary

DS40002082A-page 2