AT97SC3201 Datasheet | Atmel

Features - - - - - - - - - - - - - - Full TCG/TCPA V1.1b patibility Single Chip Turnkey Solution Hardware Asymmetric Crypto Engine 2048 RSA Sign in 500 ms Using CRT AVR 8-bit RISC Microprocessor Internal EEPROM Storage for 10+ RSA Keys 33 MHz LPC (Low Pin Count) Bus for Easy PC Interface 100 KHz System Management Bus (SMBus) Two-wire Interface Secure Hardware and Firmware Design and Chip Layout True Random Number Generator (RNG) Secure Real-time Clock Option 3.3V ±10% Supply Voltage 28-lead TSSOP Package or 40-lead MLF Package 0- 70°C Temperature Range Description The AT97SC3201 is a fully integrated security module designed to be integrated into personal puters and other embedded systems. It implements version 1.1b of the Trusted puting Platform Alliance (TCPA) specification for Trusted Platform Modules (TPM). This specification has been adopted by the Trusted puting Group (TCG). The TPM includes a crypto accelerator capable of puting a 2048-bit RSA signature in 500 ms and a 1024-bit RSA signature in 100 ms, both using CRT. munication to and from the TPM can occur through one of two interface protocols: either a 33-MHz LPC interface or a 100-KHz SMBus two-wire interface. Figure 1. AT97SC3201 Block Diagram Trusted Platform Module AT97SC3201 Summary ROM Program EEPROM Program 33 MHz LPC Interface SMBCLK/IOA SMBDAT/IOB IOC VBB 32.768 k Hz RTC SMBus Interface or GPIO AVR 8/16 Bit CPU SRAM EEPROM Data RNG CRYPTO Engine Timer Physical Security Circuitry The chip includes a full hardware random number generator that is used for the TCG protocol and is also available to the system for any random numbers it may need during normal operation. Rev. 2015DS-TPM- 7/04 Note: This is a summary document. A plete document is available under NDA. For more information, please contact your local Atmel sales office. 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...