LFECP20E-4FN484C Equivalent & Substitute Parts

Part Overview

The LFECP20E-4FN484C is an ECP Field Programmable Gate Array (FPGA) from Lattice Semiconductor Corporation, featuring 360 I/O pins, 19700 logic elements, and 434176 total RAM bits in a 484-BBGA package. This device is classified as obsolete, making substitute parts necessary for new designs and ongoing production requirements. The ECP series has been superseded by the ECP2 architecture, which provides enhanced performance and expanded logic capacity while maintaining package and voltage compatibility.

Substiute Parts

LFECP20E-4FN484C

Lattice Semiconductor CorporationIn Stock: 973LFECP20E-4FN484C Datasheet

Current PartRFQ

LFE2-20E-5FN484C

Lattice Semiconductor CorporationIn Stock: 1531LFE2-20E-5FN484C Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LFECP20E-4FN484C is determined by the following critical parameters:

Package Compatibility: Both the main part and substitute must use the 484-BBGA package with 484-FPBGA (23x23) physical dimensions to ensure PCB footprint compatibility and assembly process alignment.

Voltage Supply Range: The supply voltage range of 1.14V ~ 1.26V must be maintained to ensure proper device operation within the same power delivery infrastructure.

Operating Temperature Range: The 0°C ~ 85°C operating temperature specification must be preserved for thermal design consistency.

Mounting Type: Surface mount technology must be retained for manufacturing process compatibility.

Moisture Sensitivity Level: MSL 3 (168 Hours) classification must be maintained for storage and handling procedures.

Regulatory Compliance: REACH Unaffected status and ECCN/HTSUS classifications must remain consistent for supply chain and export compliance.

The LFE2-20E-5FN484C qualifies as a direct substitute because it meets all these critical parameters while offering enhanced logic capacity (21000 logic elements versus 19700) and increased RAM (282624 bits versus 434176 bits), with active product status providing long-term availability.

Parameter Comparison

Engineering Selection Recommendations

The LFE2-20E-5FN484C is the qualified substitute for the LFECP20E-4FN484C based on the following engineering criteria:

Product Status: The main part is classified as obsolete, while the substitute maintains active product status, ensuring continued availability and manufacturing support from Lattice Semiconductor Corporation.

Regulatory Compliance: Both devices maintain identical REACH Unaffected status, ECCN classification (3A991D), and HTSUS code (8542.39.0001), ensuring no changes to supply chain documentation or export compliance procedures.

Package and Thermal Compatibility: Identical 484-BBGA packaging, 484-FPBGA (23x23) physical dimensions, and 0°C ~ 85°C operating temperature range ensure direct PCB compatibility and thermal design consistency.

Power Supply Compatibility: Both devices operate within the same 1.14V ~ 1.26V supply voltage range, requiring no modifications to power delivery circuits.

Moisture Handling: Identical MSL 3 (168 Hours) classification maintains existing storage, handling, and assembly procedures without process changes.

Selection of the LFE2-20E-5FN484C eliminates obsolescence risk while preserving all critical electrical, mechanical, and regulatory parameters required for direct substitution.

Frequently Asked Questions (FAQ)

Q: Can the LFE2-20E-5FN484C be used as a direct replacement for the LFECP20E-4FN484C on existing PCBs?

A: Yes. Both devices use identical 484-BBGA packaging with 484-FPBGA (23x23) physical dimensions, identical supply voltage range (1.14V ~ 1.26V), and identical operating temperature range (0°C ~ 85°C). No PCB modifications are required.

Q: What are the differences in I/O count between these devices?

A: The LFECP20E-4FN484C provides 360 I/O pins, while the LFE2-20E-5FN484C provides 331 I/O pins. Design verification is required to confirm that the reduced I/O count does not impact application requirements.

Q: Are there differences in RAM capacity?

A: Yes. The LFECP20E-4FN484C contains 434176 total RAM bits, while the LFE2-20E-5FN484C contains 282624 total RAM bits. Applications requiring the full RAM capacity of the original device must be evaluated for compatibility.

Q: Do these devices require different power supply specifications?

A: No. Both devices operate within the identical 1.14V ~ 1.26V supply voltage range. Existing power delivery circuits require no modification.

Q: Are there any differences in moisture sensitivity or handling procedures?

A: No. Both devices are classified as MSL 3 (168 Hours). Existing storage, handling, and assembly procedures remain unchanged.

Q: What is the regulatory status of the substitute part?

A: The LFE2-20E-5FN484C maintains REACH Unaffected status, identical ECCN classification (3A991D), and identical HTSUS code (8542.39.0001) as the original device. No changes to supply chain documentation or export compliance are required.

Q: Why is the original part classified as obsolete?

A: The LFECP20E-4FN484C belongs to the ECP series, which has been superseded by the ECP2 architecture. Lattice Semiconductor Corporation has transitioned production to newer device families, making the original part unavailable for new orders.