1. Features
•Full Trusted Computing Group (TCG) Trusted Platform Module (TPM) Version 1.2
Compatibility
•Compliant with TCG PC Client Specific TPM Interface Specification Version 1.2
•Single-chip Turnkey Solution
•Hardware Asymmetric Crypto Engine
•2048-bit RSA® Sign in 500 ms
•AVR® RISC Microprocessor
•Internal EEPROM Storage for RSA Keys
•33 MHz LPC (Low Pin Count) Bus for Easy PC Interface
•Secure Hardware and Firmware Design and Chip Layout
•True Random Number Generator (RNG) – FIPS 140-2 Compliant
•NV Storage space for 1280 bytes of user defined data
•3.3V Supply Voltage
•28-lead TSSOP Package or 40-lead QFN Package
•0–70°C Temperature Range
2. Description
The AT97SC3203 is a fully integrated security module designed to be integrated into
personal computers and other embedded systems. It implements version 1.2 of the
Trusted Computing Group (TCG) specification for Trusted Platform Modules(TPM).
The TPM includes a cryptographic accelerator capable of computing a 2048-bit RSA
signature in 500 ms and a 1024-bit RSA signature in 100 ms. Performance of the
SHA-1 accelerator is 50 µs per 64-byte block. In most cases, TCG key generation
operations will be completed using a proprietary mechanism in less than 1 msec.
The chip communicates with the PC through the LPC interface. The TPM supports
SIRQ (for interrupts) and CLKRUN to permit clock stopping for power savings in
mobile computers.
Figure 2-1. Pin Configurations
Pin Name Description
VCC 3.3V Supply Voltage
SB3V Standby 3.3V Supply Voltage
VBAT 2.5V - 4.0V Battery Input
GND Ground
LRESET# PCI Reset Input Active Low
LAD0 LPC Command, Address, Data Line
Input/Output
LAD1 LPC Command, Address, Data Line
Input/Output
LAD2 LPC Command, Address, Data Line
Input/Output
LAD3 LPC Command, Address, Data Line
Input/Output
Trusted
Platform
Module
AT97SC3203
LPC
Interface
Summary
Note: See the full datasheet for
detailed design
information.
5116DS–TPM–1/08
Note: This is a summary document. A complete docu-
ment is available under NDA. For more information,
please contact your local Atmel sales office.