LFECP33E-4FN672C Equivalent & Substitute Parts

Part Overview

The LFECP33E-4FN672C is an ECP series Field Programmable Gate Array (FPGA) manufactured by Lattice Semiconductor Corporation. This device features 496 I/O pins, 32,800 logic elements, and 434,176 total RAM bits in a 672-BBGA package. The product is currently obsolete, making identification of compatible substitute components essential for ongoing system support, design updates, and production continuity.

Substiute Parts

LFECP33E-4FN672C

Lattice Semiconductor CorporationIn Stock: 1057LFECP33E-4FN672C Datasheet

Current PartRFQ

LFE2-35E-5FN672C

Lattice Semiconductor CorporationIn Stock: 5351LFE2-35E-5FN672C Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete LFECP33E-4FN672C is determined by the following critical parameters:

Package Compatibility: Both the main part and substitute must use the 672-BBGA package with 672-FPBGA (27x27) footprint to ensure PCB-level compatibility without redesign.

Electrical Specifications: Supply voltage range (1.14V ~ 1.26V) and operating temperature range (0°C ~ 85°C) must be maintained or exceeded to ensure functional equivalence in the target application.

I/O Pin Count: The substitute part must provide sufficient I/O pins to accommodate the design requirements. The main part provides 496 I/O pins; substitutes with equal or greater I/O capacity are acceptable.

Logic Resources: The substitute must provide logic element count and RAM bit capacity equal to or greater than the original part to support the implemented design.

Regulatory Compliance: REACH status and ECCN classification must remain consistent to maintain supply chain and export compliance.

The LFE2-35E-5FN672C meets all substitution criteria as an active product from the same manufacturer with compatible electrical specifications, identical package, and enhanced logic resources.

Parameter Comparison

Engineering Selection Recommendations

The LFE2-35E-5FN672C is the manufacturer-recommended substitute for the obsolete LFECP33E-4FN672C. Both devices share identical electrical specifications, package footprint, and regulatory compliance status. The substitute is an active product with current manufacturing support and established supply chain availability.

The LFE2-35E-5FN672C operates within the same voltage and temperature ranges, ensuring compatibility with existing power delivery and thermal management infrastructure. The identical 672-BBGA package eliminates PCB redesign requirements.

Design considerations include the I/O pin count difference (450 vs. 496) and logic element count (32,000 vs. 32,800). Applications utilizing all 496 I/O pins or requiring the full 434,176 RAM bits of the original part require design evaluation to confirm compatibility with the substitute's resource allocation.

Frequently Asked Questions (FAQ)

Q: Can the LFE2-35E-5FN672C be used as a direct replacement for the LFECP33E-4FN672C?

A: The LFE2-35E-5FN672C is compatible at the package and electrical level. Both devices use the 672-BBGA package, operate at 1.14V ~ 1.26V supply voltage, and support 0°C ~ 85°C operating temperature. Design-level compatibility depends on whether the application utilizes the full I/O count (496 pins) and RAM capacity (434,176 bits) of the original part. The substitute provides 450 I/O pins and 339,968 RAM bits.

Q: What is the significance of the package designation 672-FPBGA (27x27)?

A: This designation specifies the physical footprint and pin count. The 27x27 millimeter package with 672 pins ensures mechanical and electrical compatibility at the PCB level. Both the main part and substitute use this identical package, eliminating the need for PCB layout modifications.

Q: Are there supply chain differences between the obsolete and active products?

A: The LFECP33E-4FN672C is obsolete with limited remaining inventory. The LFE2-35E-5FN672C is an active product with established manufacturing and distribution channels, ensuring long-term availability and consistent lead times.

Q: How do the logic element counts affect substitution?

A: The LFECP33E-4FN672C provides 32,800 logic elements; the LFE2-35E-5FN672C provides 32,000 logic elements. This 800-element difference is negligible for most applications. Designs utilizing the maximum logic capacity require evaluation to confirm the substitute's resources are sufficient.

Q: What compliance certifications apply to both parts?

A: Both devices maintain REACH Unaffected status and share the same ECCN (3A991D) and HTSUS (8542.39.0001) classifications, ensuring consistent regulatory and export compliance.