EmbeddedRelated.com
The 2026 Embedded Online Conference
AT97SC3205-H3M4200B

MCHPAT97SC3205-H3M4200B

Microchip Technology
AVR - Trusted Platform Module (TPM) Microcontroller IC EEPROM 32-VFQFN Exposed Pad
Active2,140 in stock

Overview

The AT97SC3205-H3M4200B is a Microchip Trusted Platform Module (TPM) based on an 8-bit AVR RISC core, designed to provide secure storage for sensitive data and cryptographic keys. It is fully compliant with the TCG TPM Version 1.2 and TCG PC Client-Specific TPM Interface Specification (TIS) Version 1.3. This turnkey security solution features hardware-based asymmetric crypto engines and internal EEPROM for non-volatile storage.

Why Choose This Part

This module is FIPS-140-2 certified, ensuring it meets rigorous security standards for cryptographic modules. Its integrated 2066 bytes of user-defined NV storage and dedicated hardware engines for RSA and SHA operations offload security tasks from the main processor while enhancing overall system resistance to physical and logical tampering.

Applications

Secure Boot and Integrity
Used to verify system firmware and software integrity during the boot process to prevent unauthorized code execution.
Cryptographic Key Management
Provides secure generation and storage of RSA keys within hardware-protected EEPROM.
Platform Authentication
Acts as a hardware root of trust for authenticating the platform to network services and remote servers.
Data Encryption
Utilizes hardware-accelerated SHA, AES, and RSA engines to perform high-speed cryptographic operations.

Key Specifications

Interface SPI
Applications Trusted Platform Module (TPM)
Mounting Type Surface Mount
Number of I/O 4
Core Processor AVR
Package / Case 32-VFQFN Exposed Pad
Voltage - Supply 3.3V
Program Memory Type EEPROM
Operating Temperature -40degC ~ 85degC
Supplier Device Package 32-VQFN (4x4)

Getting Started

Engineers can integrate this TPM via its SPI interface to a host controller using the standard TPM Interface Specification (TIS). Development typically involves using Microchip's security libraries or standard Linux TPM drivers (tpm_tis_spi) to communicate with the device. Ensure the host system supports 3.3V signaling for the SPI bus and the 4 available GPIO pins.

Also Consider

AT97SC3205T TPM Development Kit MCHPMicrochip Technology - A specialized development kit designed specifically for evaluating the AT97SC3205 series security features.
ATSHA204A CryptoAuthentication MCHPMicrochip Technology - A simpler, lower-cost security IC for applications requiring basic authentication and symmetric key storage without full TPM compliance.
The 2026 Embedded Online Conference