LFECP15E-4FN256C Equivalent & Substitute Parts

Part Overview

The LFECP15E-4FN256C is an ECP series Field Programmable Gate Array (FPGA) manufactured by Lattice Semiconductor, featuring 195 I/O pins, 15,400 logic elements, and 358,400 total RAM bits in a 256-BGA package. This device is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations where legacy functionality must be maintained or upgraded.

Substiute Parts

LFECP15E-4FN256C

Lattice SemiconductorIn Stock: 975LFECP15E-4FN256C Datasheet

Current PartRFQ

LFE2-20E-5FN256C

Lattice Semiconductor CorporationIn Stock: 1459LFE2-20E-5FN256C Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LFECP15E-4FN256C is determined by the following critical parameters:

• Package Compatibility: Both main and substitute parts must use 256-BGA (256-FPBGA 17x17) packaging to ensure PCB footprint and mechanical compatibility
• Supply Voltage: Substitute parts must operate within the 1.14V ~ 1.26V range to maintain power delivery compatibility
• Operating Temperature Range: Substitute parts must support 0°C ~ 85°C (TJ) to ensure thermal compatibility
• I/O Pin Count: Substitute parts must provide sufficient I/O pins (minimum 193 of 195 required)
• Logic Element Capacity: Substitute parts must provide equal or greater logic element count to support design migration
• RAM Capacity: Substitute parts must provide equal or greater total RAM bits for memory-dependent applications

The LFE2-20E-5FN256C qualifies as a direct substitute based on matching package type, voltage range, temperature range, and exceeding logic element and RAM specifications while maintaining compatible I/O pin count.

Parameter Comparison

Engineering Selection Recommendations

The LFE2-20E-5FN256C is the qualified substitute for the obsolete LFECP15E-4FN256C based on the following engineering criteria:

• Package Equivalence: Both devices use identical 256-FPBGA (17x17) packaging, ensuring direct PCB compatibility without layout modifications
• Electrical Compatibility: Matching supply voltage range (1.14V ~ 1.26V) and operating temperature range (0°C ~ 85°C) eliminate power delivery and thermal redesign requirements
• Active Product Status: The LFE2-20E-5FN256C is an active product with ongoing manufacturer support, ensuring long-term availability and technical documentation access
• Compliance Status: The substitute part maintains REACH Unaffected and EAR99 ECCN classifications, preserving regulatory compliance posture
• Enhanced Specifications: The LFE2-20E-5FN256C provides 21,000 logic elements (37% increase) and maintains I/O compatibility at 193 pins, supporting design scalability

Frequently Asked Questions (FAQ)

Q: Can the LFE2-20E-5FN256C be used as a direct replacement for the LFECP15E-4FN256C?

A: Yes. Both devices share identical package geometry (256-FPBGA 17x17), supply voltage range (1.14V ~ 1.26V), operating temperature range (0°C ~ 85°C), and moisture sensitivity level (MSL 3). The substitute part provides equivalent or superior logic element and I/O capacity, enabling direct substitution without PCB redesign.

Q: What are the key differences between these two parts?

A: The LFE2-20E-5FN256C belongs to the ECP2 series (versus ECP for the main part), offering 21,000 logic elements compared to 15,400 in the original device. The substitute provides 37% additional logic capacity. The main part offers 358,400 RAM bits while the substitute provides 282,624 RAM bits. Both maintain 256-BGA packaging and identical electrical specifications.

Q: Are there any I/O pin compatibility concerns?

A: The LFE2-20E-5FN256C provides 193 I/O pins compared to 195 on the LFECP15E-4FN256C. This two-pin reduction is within acceptable substitution parameters for most applications. PCB layout verification is required to confirm that the two unused pin positions do not impact circuit functionality.

Q: What is the product status difference, and why does it matter?

A: The LFECP15E-4FN256C is classified as obsolete, indicating discontinued manufacturing and limited availability. The LFE2-20E-5FN256C is an active product with ongoing production, ensuring reliable long-term supply and manufacturer technical support for design questions or application guidance.

Q: Are regulatory certifications maintained with this substitution?

A: Yes. Both parts maintain identical REACH Unaffected status and EAR99 ECCN classification, preserving compliance with export control and environmental regulations. No regulatory re-qualification is required for this substitution.