AT97SC3205T-H3M46-20 Equivalent & Substitute Parts

Part Overview

The AT97SC3205T-H3M46-20 is an embedded Trusted Platform Module (TPM) integrated circuit manufactured by Microchip Technology. This component features an AVR core processor with I2C interface connectivity, designed for security-critical applications requiring hardware-based cryptographic operations and secure key storage. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing system support and new design implementations.

Substiute Parts

AT97SC3205T-H3M46-20

Microchip TechnologyIn Stock: 841AT97SC3205T-H3M46-20 Datasheet

Current PartRFQ

AT97SC3205T-H3M4C-20

Microchip TechnologyIn Stock: 1829AT97SC3205T-H3M4C-20 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AT97SC3205T-H3M46-20 is determined by the following critical parameters:

• Manufacturer: Microchip Technology
• Application: Trusted Platform Module (TPM)
• Core Processor: AVR
• Program Memory Type: EEPROM
• Interface: I2C
• Number of I/O: 4
• Voltage Supply: 3.3V
• Package / Case: 32-VFQFN Exposed Pad
• Supplier Device Package: 32-VQFN (4x4)
• Mounting Type: Surface Mount

The identified substitute part AT97SC3205T-H3M4C-20 maintains identical electrical specifications and physical packaging, differing only in product status (Active vs. Obsolete), operating temperature range, packaging format (Tape & Reel vs. standard), and regulatory classification codes. These differences do not affect functional compatibility in applications requiring TPM functionality with I2C interface connectivity.

Parameter Comparison

Engineering Selection Recommendations

The AT97SC3205T-H3M4C-20 is the direct functional equivalent for applications currently using or requiring the AT97SC3205T-H3M46-20. Both parts maintain identical electrical characteristics, physical packaging, and regulatory compliance status (ROHS3 Compliant, REACH Unaffected).

The primary distinction is product lifecycle status: the original part is obsolete while the substitute remains in active production. This availability difference makes the AT97SC3205T-H3M4C-20 the appropriate selection for new designs and ongoing system support.

Operating temperature range differs between the two variants. The main part operates across -40°C to 85°C, while the substitute operates across 0°C to 70°C. Applications requiring extended low-temperature operation below 0°C must account for this specification variance.

Both parts are ROHS3 compliant and REACH unaffected, satisfying regulatory requirements for commercial and industrial applications.

Frequently Asked Questions (FAQ)

Q: Can AT97SC3205T-H3M4C-20 directly replace AT97SC3205T-H3M46-20 in existing designs?

A: Yes. Both parts share identical electrical specifications, I2C interface protocol, 3.3V supply voltage, 4 I/O pins, and 32-VQFN (4x4) physical packaging. Pin-for-pin compatibility is maintained.

Q: What is the significance of the operating temperature range difference?

A: The main part operates from -40°C to 85°C, while the substitute operates from 0°C to 70°C. Applications requiring operation below 0°C must remain with the original specification or identify alternative TPM solutions with extended temperature ratings.

Q: Are there packaging format differences between these parts?

A: The main part is available in standard packaging, while the substitute is supplied in Tape & Reel (TR) format. Both use identical 32-VQFN (4x4) physical packages suitable for surface mount assembly.

Q: Do both parts meet the same regulatory standards?

A: Yes. Both AT97SC3205T-H3M46-20 and AT97SC3205T-H3M4C-20 are ROHS3 compliant and REACH unaffected, meeting equivalent regulatory requirements.

Q: Why is the original part classified as obsolete?

A: Product obsolescence reflects end-of-life status in the manufacturer's product portfolio. The AT97SC3205T-H3M4C-20 remains in active production and serves the same TPM application requirements.