AT97SC3201 ATMEL Corporation, AT97SC3201 Datasheet - Page 2

• Manufacturer Part Number: AT97SC3201
• Description: a Fully Integrated Security Module Designed to be Integrated Into Computer Systems And Other Embedded Systems. This is a Summary Document. a Complete Document is Available Under Nda. For More Information, Please Contact Your Local Atmel Sales Office.
• Manufacturer: ATMEL Corporation

A real-time clock function is available using an external battery and crystal. The chip provides
tamper detection if the battery or crystal are removed or tampered with, and the current time
value can be signed by the appropriate internal keys to verify its accuracy. (Contact Atmel for
current status of this option.)
The battery detector can be used without the crystal for lower cost. In this mode, the TPM can
indicate to the system if it has been removed from the PC in any way and can also take
actions internally.
The chip uses a dynamic internal memory management scheme to store from 10 to 20 keys.
Other than the standard TCG/TCPA commands (TPM_Evictkey, TPM_Loadkey), no system
intervention is required to manage this internal key cache.
The TPM is offered to OEM manufacturers as a turnkey solution, including the firmware inte-
grated on the chip. In addition, Atmel provides the necessary driver software for integration
into certain operating systems, along with BIOS drivers. A TCG/TCPA Software Stack (TSS),
also supplied by Atmel and available under license, provides communication support to any
application using MSCAPI or PKCS #11 Cryptographic APIs. (Contact Atmel for a complete
list of operating systems supported.)
Full documentation for TCG/TCPA primitives can be found on the TCG Web site,
www.trustedcomputinggroup.org. This specification includes only mechanical, electrical and
LPC protocol information.
AT97SC3201
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2015BS-TPM–04/03