AT97SC3204S-X2AC-10

Application Specific Microcontrollers Overview

The AT97SC3204S-X2AC-10 is a security integrated circuit implementing the Trusted Computing Group (TCG) Trusted Platform Module (TPM) Version 1.2 specification. It features an AVR RISC microprocessor and a hardware asymmetric crypto engine capable of performing a 2048-bit RSA signature in 200ms and a 1024-bit RSA signature in 40ms. The SHA-1 accelerator processes data at 20µs per 64-byte block. The device communicates via a 33MHz LPC bus, includes a FIPS 140-2 compliant True Random Number Generator, and provides 1280 bytes of NV storage for user-defined data. It operates on a 3.3V supply voltage.

Application Specific Microcontrollers Feature Summary

• Full TCG TPM Version 1.2 compatibility with PC Client Specific Interface Specification compliance
• Hardware crypto engine supporting 2048-bit RSA signing in 200ms and 1024-bit RSA in 40ms
• Integrated AVR 8-bit RISC CPU with internal EEPROM for RSA key storage
• FIPS 140-2 compliant True Random Number Generator (RNG)

Application Specific Microcontrollers Applications

• Personal computers requiring hardware-based platform authentication
• Embedded systems needing secure boot and data integrity verification
• Mobile computers utilizing SIRQ and CLKRUN for power management

Application Specific Microcontrollers Procurement Notes

Verify package configuration against design requirements, as the component is available in 28-lead Thin TSSOP, Wide TSSOP, or 40-lead QFN packages. Confirm temperature range suitability, noting that commercial and industrial grades are offered. Ensure the ordering suffix matches the specific package and operating range needed for the application.

Application Specific Microcontrollers Selection Notes

Select based on required package type: 28A2 for Thin TSSOP, 28A3 for standard TSSOP, or 40ML1 for QFN. Verify operating temperature range; the datasheet specifies Commercial (0°C to 70°C) and Industrial (-40°C to 85°C) options. Ensure system supports the 33MHz LPC interface and 3.3V supply voltage constraints.

Application Specific Microcontrollers Part Context

This component belongs to the AT97SC3204 series of security ICs manufactured by Microchip Technology (formerly Atmel). It serves as a turnkey solution for OEMs and ODMs, integrating firmware and device drivers to facilitate implementation in PC client platforms and embedded systems adhering to TCG standards.

Application Specific Microcontrollers Replacement Considerations

Direct replacements within the same family include variants with different package codes such as AT97SC3204-28A2, AT97SC3204-28A3, or AT97SC3204-40ML1. Cross-package substitution requires verifying pinout compatibility and physical footprint dimensions.