AT97SC3204T-U2MB-10 Equivalent & Substitute Parts

Part Overview

The AT97SC3204T-U2MB-10 is an embedded cryptographic Trusted Platform Module (TPM) integrated circuit manufactured by Microchip Technology. This device implements the CryptoController™ series architecture with AVR core processor and EEPROM program memory, designed for secure cryptographic operations in embedded systems. The part operates at 3.3V supply voltage across an industrial temperature range of -40°C to 85°C and utilizes I2C interface communication. Currently in active product status with ROHS3 compliance and REACH unaffected classification, this component is available in 40-VFQFN surface mount packaging. Substitute parts are identified when equivalent functional capability, electrical specifications, and compliance certifications align with the original design requirements, enabling component sourcing flexibility while maintaining system integrity.

Substiute Parts

AT97SC3204T-U2MB-10

Microchip TechnologyIn Stock: 2190AT97SC3204T-U2MB-10 Datasheet

Current PartRFQ

AT97SC3205T-H3M4C00B

Microchip TechnologyIn Stock: 1394AT97SC3205T-H3M4C00B Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AT97SC3204T-U2MB-10 is determined by strict alignment of the following critical parameters:

• Manufacturer: Microchip Technology (same manufacturer ensures design continuity and support)
• Core Processor Architecture: AVR (maintains instruction set compatibility)
• Program Memory Type: EEPROM (preserves firmware storage methodology)
• Interface Protocol: I2C (ensures communication compatibility with host systems)
• Supply Voltage: 3.3V (maintains power distribution requirements)
• Operating Temperature Range: -40°C ~ 85°C (ensures thermal envelope compatibility)
• Mounting Type: Surface Mount (compatible with PCB assembly processes)
• Compliance Standards: ROHS3 Compliant and REACH Unaffected (maintains regulatory alignment)
• Product Status: Active (ensures ongoing manufacturer support and availability)

The AT97SC3205T-H3M4C00B qualifies as a substitute based on full alignment with these parameters. Functional differences in pin count (32-pin versus 40-pin) and package footprint (4x4 VQFN versus 6x6 VQFN) do not preclude substitution when the host system design accommodates the reduced I/O configuration and alternative package geometry.

Parameter Comparison

Engineering Selection Recommendations

Both the AT97SC3204T-U2MB-10 and AT97SC3205T-H3M4C00B maintain active product status with Microchip Technology, ensuring continued manufacturer support and component availability. Both devices carry identical ROHS3 compliance and REACH unaffected classifications, satisfying regulatory requirements for industrial and commercial applications.

The AT97SC3205T-H3M4C00B presents improved moisture handling characteristics with MSL rating of 1 (unlimited humidity exposure) compared to the original part's MSL rating of 3 (168-hour limitation). This enhanced moisture sensitivity profile reduces storage and handling constraints during manufacturing and logistics operations.

Selection between these parts depends on PCB layout constraints and I/O requirements. The 40-pin configuration of the AT97SC3204T-U2MB-10 provides expanded I/O capability within a 6x6mm footprint, while the 32-pin AT97SC3205T-H3M4C00B reduces board space requirements with a 4x4mm footprint. Both devices support identical I2C communication protocol and operate within the same thermal and electrical specifications.

Frequently Asked Questions (FAQ)

Q: Can the AT97SC3205T-H3M4C00B directly replace the AT97SC3204T-U2MB-10 in existing designs?

A: Direct replacement requires PCB layout modification due to different package footprints (6x6mm versus 4x4mm) and pin count reduction (40-pin to 32-pin). The reduced I/O configuration of the substitute part must align with the host system's interface requirements. Firmware compatibility is maintained through identical AVR core processor architecture and I2C interface protocol.

Q: What are the packaging differences between these parts?

A: The AT97SC3204T-U2MB-10 is supplied in Tape & Reel (TR) packaging with 40-VQFN (6x6) configuration. The AT97SC3205T-H3M4C00B is supplied in Tray packaging with 32-VQFN (4x4) configuration. Both utilize surface mount technology with exposed pad thermal management.

Q: Are there compliance or certification differences?

A: Both parts maintain identical ROHS3 compliance, REACH unaffected status, and ECCN classification (5A992C). Regulatory alignment is equivalent across both devices.

Q: What is the significance of the MSL rating difference?

A: The AT97SC3205T-H3M4C00B carries MSL 1 (unlimited moisture exposure) compared to MSL 3 (168-hour limitation) for the AT97SC3204T-U2MB-10. This indicates the substitute part requires less stringent moisture control during storage, handling, and assembly operations, reducing logistics complexity.

Q: Do both parts support identical I2C communication protocols?

A: Yes. Both devices implement I2C interface protocol with identical electrical specifications and operating voltage (3.3V). Communication compatibility with host systems is maintained across both parts.

Q: What inventory considerations apply to these parts?

A: The AT97SC3204T-U2MB-10 has 2100 units in stock. The AT97SC3205T-H3M4C00B has 1347 units in stock. Both are classified as new original components.