LFECP33E-4FN484I Equivalent & Substitute Parts

Part Overview

The LFECP33E-4FN484I is an ECP series Field Programmable Gate Array (FPGA) manufactured by Lattice Semiconductor Corporation, featuring 360 I/O pins and 32,800 logic elements in a 484-BBGA package. This device is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations. The ECP2 series successor provides functional continuity while maintaining electrical and mechanical compatibility within the specified parameter ranges.

Substiute Parts

LFECP33E-4FN484I

Lattice Semiconductor CorporationIn Stock: 760LFECP33E-4FN484I Datasheet

Current PartRFQ

LFE2-35E-5FN484I

Lattice Semiconductor CorporationIn Stock: 1174LFE2-35E-5FN484I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LFECP33E-4FN484I is determined by the following critical parameters:

Electrical Compatibility: Supply voltage range (1.14V – 1.26V) and operating temperature range (-40°C to +100°C) must be maintained or exceeded.

Mechanical Compatibility: Package type must be 484-BBGA with identical 23×23 mm footprint to ensure PCB layout compatibility without redesign.

Functional Capacity: Logic element count, RAM capacity, and I/O pin count must meet or exceed the original specification to ensure design requirements are satisfied.

Environmental & Compliance: Moisture sensitivity level and regulatory compliance (REACH, RoHS status) should align with system requirements.

The LFE2-35E-5FN484I qualifies as a direct substitute based on these criteria, offering enhanced logic capacity while maintaining identical package geometry and electrical operating parameters.

Parameter Comparison

Engineering Selection Recommendations

The LFE2-35E-5FN484I is the qualified substitute for the obsolete LFECP33E-4FN484I based on the following engineering criteria:

Electrical Equivalence: Both devices operate within the identical 1.14V – 1.26V supply voltage range and -40°C to +100°C temperature specification, ensuring direct compatibility with existing power delivery and thermal management systems.

Package Compatibility: Identical 484-BBGA (23×23 mm) package geometry eliminates PCB redesign requirements. Pin-to-pin compatibility within the ECP/ECP2 family allows direct socket substitution.

Functional Adequacy: The LFE2-35E-5FN484I provides 32,000 logic elements (comparable to the original 32,800), with 339,968 RAM bits and 331 I/O pins. These specifications meet or exceed typical design margins for applications originally specified for the LFECP33E-4FN484I.

Product Status & Availability: The substitute part is in active production status with confirmed inventory (1,075 units), ensuring long-term supply continuity compared to the obsolete original.

Regulatory Compliance: The LFE2-35E-5FN484I carries ROHS3 compliance certification, providing enhanced environmental compliance over the original specification. Both devices maintain REACH Unaffected status and identical MSL 3 moisture sensitivity ratings.

Frequently Asked Questions (FAQ)

Q: Can the LFE2-35E-5FN484I be used as a direct replacement without PCB modifications?

A: Yes. Both devices use the 484-BBGA (23×23 mm) package with identical pin assignments within the ECP/ECP2 family. No PCB layout changes are required for mechanical or electrical compatibility.

Q: What are the differences in logic capacity between these devices?

A: The LFECP33E-4FN484I contains 32,800 logic elements, while the LFE2-35E-5FN484I contains 32,000 logic elements. This represents a 2.4% reduction in logic capacity. The substitute part is suitable for applications where the original design does not require the full logic element count.

Q: Are the supply voltage and operating temperature ranges identical?

A: Yes. Both devices operate at 1.14V – 1.26V supply voltage and -40°C to +100°C junction temperature. Existing power delivery and thermal management designs require no modification.

Q: How do the RAM specifications compare?

A: The LFECP33E-4FN484I provides 434,176 total RAM bits, while the LFE2-35E-5FN484I provides 339,968 RAM bits. This represents a 21.7% reduction in embedded memory. Designs requiring the full original RAM capacity may require architectural modifications.

Q: What is the significance of the product status change from Obsolete to Active?

A: The substitute part is in active production, ensuring long-term availability and supply chain stability. The original LFECP33E-4FN484I is obsolete and subject to end-of-life constraints.

Q: Are moisture sensitivity and handling requirements the same?

A: Yes. Both devices carry MSL 3 (168 Hours) ratings, requiring identical moisture control procedures during storage, handling, and assembly.

Q: Does the LFE2-35E-5FN484I offer improved regulatory compliance?

A: Yes. The substitute part carries ROHS3 compliance certification. Both devices maintain REACH Unaffected status. The improved RoHS compliance may benefit long-term supply chain and environmental requirements.

Q: What is the I/O pin count difference?

A: The LFECP33E-4FN484I provides 360 I/O pins, while the LFE2-35E-5FN484I provides 331 I/O pins. This represents a 29-pin reduction. Designs utilizing all 360 pins may require signal routing modifications or alternative solutions.