AT97SC3205T-H3M46-00 Equivalent & Substitute Parts

Part Overview

The AT97SC3205T-H3M46-00 is an embedded Trusted Platform Module (TPM) integrated circuit manufactured by Microchip Technology. This device implements I2C interface communication with AVR core processor architecture and EEPROM program memory. The part is currently classified as obsolete, which necessitates identification of functionally equivalent substitute components for ongoing system support and new design implementations.

Substiute Parts

AT97SC3205T-H3M46-00

Microchip TechnologyIn Stock: 741AT97SC3205T-H3M46-00 Datasheet

Current PartRFQ

AT97SC3205T-H3M4C-00

Microchip TechnologyIn Stock: 2373AT97SC3205T-H3M4C-00 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AT97SC3205T-H3M46-00 is determined by the following critical parameters:

• Manufacturer and Base Product Number: Both the main part and substitute must originate from Microchip Technology and share the AT97SC3205T base product designation to ensure firmware compatibility and pinout equivalence.
• Interface Protocol: I2C interface is mandatory for system-level communication compatibility.
• Core Architecture: AVR processor core ensures instruction set and functional compatibility.
• Memory Configuration: EEPROM program memory type must be maintained.
• Electrical Specifications: 3.3V supply voltage and 4 I/O pins are fixed requirements.
• Physical Package: 32-VFQFN (4x4) with exposed pad is required for PCB layout compatibility.
• Mounting Technology: Surface mount configuration must be preserved.

The AT97SC3205T-H3M4C-00 meets all substitution criteria as a direct equivalent within the same product family.

Parameter Comparison

Engineering Selection Recommendations

The AT97SC3205T-H3M4C-00 is the direct functional equivalent for the obsolete AT97SC3205T-H3M46-00. Both parts maintain identical electrical and mechanical specifications across all critical parameters: I2C interface, AVR core processor, EEPROM memory, 3.3V supply voltage, 4 I/O pins, and 32-VFQFN (4x4) package configuration.

The substitute part carries Active product status, ensuring long-term availability and supply chain continuity. Both components are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

The primary operational difference is the operating temperature range: the main part supports -40°C to 85°C, while the substitute operates within 0°C to 70°C. Applications requiring extended low-temperature operation below 0°C must account for this specification variance.

Moisture sensitivity differs between the two parts: MSL 1 (unlimited) for the main part versus MSL 3 (168 hours) for the substitute. Storage and handling procedures must align with the substitute's moisture sensitivity classification.

Frequently Asked Questions (FAQ)

Q: Can AT97SC3205T-H3M4C-00 directly replace AT97SC3205T-H3M46-00 in existing designs?

A: Yes. Both parts share identical pinout, package configuration, electrical specifications, and functional architecture. PCB layout and firmware remain compatible without modification.

Q: What is the significance of the different operating temperature ranges?

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 or above 70°C must evaluate temperature compatibility before substitution.

Q: How do the different packaging formats affect component selection?

A: The main part is supplied in bulk packaging, while the substitute is supplied in Tape & Reel (TR) format. This affects procurement quantities and automated assembly processes but does not impact electrical or mechanical compatibility.

Q: What does Moisture Sensitivity Level (MSL) difference mean for handling?

A: MSL 1 (unlimited) allows indefinite storage without moisture exposure concerns. MSL 3 (168 hours) requires the component to be used within 168 hours of package opening under controlled humidity conditions. Proper storage in dry-pack containers with desiccant is necessary for the substitute part.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both AT97SC3205T-H3M46-00 and AT97SC3205T-H3M4C-00 are ROHS3 compliant and REACH unaffected, meeting current environmental regulations.

Q: Why is the main part classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The AT97SC3205T-H3M4C-00 remains in active production, providing a viable path for continued system support and new implementations.