AT97SC3204T-U1A180

Application Specific Microcontrollers Overview

The AT97SC3204T-U1A180 is a security module 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 computing 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. Communication with the host system occurs via a 33MHz Low Pin Count (LPC) bus, supporting SIRQ interrupts and CLKRUN for power management. The device includes internal EEPROM storage for RSA keys and provides 1280 bytes of user-defined non-volatile storage.

Application Specific Microcontrollers Feature Summary

• Full TCG TPM Version 1.2 compatibility
• Hardware RSA acceleration: 2048-bit in 200ms, 1024-bit in 40ms
• SHA-1 accelerator performance of 20µs per 64-byte block
• Integrated True Random Number Generator (RNG) compliant with FIPS 140-2

Application Specific Microcontrollers Applications

• Personal computers requiring TPM integration
• Embedded systems needing secure authentication
• Mobile computers utilizing LPC interface and clock stopping features

Application Specific Microcontrollers Procurement Notes

Verify package configuration against ordering codes. The U1 suffix indicates a specific package variant within the AT97SC3204 family. Confirm temperature range requirements as the series supports both commercial and industrial grades. Ensure LPC interface compatibility with the target motherboard or controller.

Application Specific Microcontrollers Selection Notes

Select based on required package type: 28-lead Thin TSSOP, 28-lead TSSOP, or 40-lead QFN. Verify operating temperature range needs; the component is available in Commercial (0°C to 70°C) and Industrial (-40°C to 85°C) variants. Ensure the design accommodates the 3.3V supply voltage and LPC bus timing specifications.

Application Specific Microcontrollers Part Context

This component belongs to the AT97SC3204 series of security ICs manufactured by Microchip Technology (formerly Atmel). The series provides turnkey TPM solutions for OEM and ODM manufacturers, integrating firmware and hardware security features into a single chip for PC client platforms.

Application Specific Microcontrollers Replacement Considerations

Check for updated Microchip part numbers if Atmel branding is obsolete. Verify pinout and package dimensions for direct replacement. Ensure the replacement supports TCG TPM 1.2 specification if legacy compatibility is required.