LFXP20C-4FN256C Equivalent & Substitute Parts

Part Overview

The LFXP20C-4FN256C is an XP series Field Programmable Gate Array (FPGA) from Lattice Semiconductor Corporation, featuring 20,000 logic elements and 188 I/O pins in a 256-BGA package. This device is classified as obsolete, making identification of compatible alternatives essential for ongoing system support and new design implementations. The XP2 series successor provides enhanced logic capacity and updated electrical specifications while maintaining package compatibility.

Substiute Parts

LFXP20C-4FN256C

Lattice Semiconductor CorporationIn Stock: 33008LFXP20C-4FN256C Datasheet

Current PartRFQ

LFXP2-30E-5FTN256C

Lattice Semiconductor CorporationIn Stock: 2270LFXP2-30E-5FTN256C Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The LFXP2-30E-5FTN256C qualifies as a functional substitute based on the following substitution criteria:

Package Compatibility: Both devices utilize 256-pin BGA packages with identical 17x17mm footprints, enabling direct PCB layout compatibility without redesign.

Mounting and Environmental Specifications: Both parts are surface-mount devices with identical operating temperature ranges (0°C ~ 85°C) and equivalent moisture sensitivity levels (MSL 3, 168 hours), ensuring compatibility with existing assembly and storage processes.

I/O Pin Count: The substitute provides 201 I/O pins compared to the original 188 pins. This increased I/O capacity maintains backward compatibility for designs utilizing the original pin count while offering expanded functionality for new implementations.

Logic Capacity: The LFXP2-30E-5FTN256C provides 29,000 logic elements versus the original 20,000, representing a 45% increase in programmable logic resources without package size changes.

Supply Voltage: The substitute operates at 1.14V ~ 1.26V, a narrower range than the original 1.71V ~ 3.465V specification. System power supply designs must accommodate this requirement.

Parameter Comparison

Engineering Selection Recommendations

For Obsolete Part Replacement: The LFXP2-30E-5FTN256C is the designated manufacturer substitute for the obsolete LFXP20C-4FN256C. The XP2 series maintains package-level compatibility while providing enhanced logic capacity and active product status with ongoing manufacturer support.

Compliance Considerations: The substitute achieves ROHS3 compliance, whereas the original part's RoHS status is not specified. Systems requiring RoHS certification should prioritize the LFXP2-30E-5FTN256C.

Power Supply Design: The substitute's narrower supply voltage range (1.14V ~ 1.26V) requires verification against existing power distribution designs. Systems currently operating the original part at voltages above 1.26V must implement revised power supply specifications.

Inventory and Availability: The substitute is in active production with 2,260 units in stock, compared to the original part's obsolete status with 32,900 units remaining. Long-term design continuity favors the active substitute.

Frequently Asked Questions (FAQ)

Q: Can the LFXP2-30E-5FTN256C be used as a direct drop-in replacement for the LFXP20C-4FN256C?

A: Yes, from a physical and mechanical standpoint. Both devices use identical 256-pin BGA packages with 17x17mm footprints, enabling direct PCB compatibility without layout redesign. However, the substitute's narrower supply voltage range (1.14V ~ 1.26V) requires verification of power supply compatibility before implementation.

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

A: The primary differences are: (1) Product status—the original is obsolete while the substitute is active; (2) Logic capacity—the substitute provides 29,000 logic elements versus 20,000; (3) I/O count—the substitute offers 201 pins versus 188; (4) Supply voltage—the substitute operates at 1.14V ~ 1.26V versus the original's 1.71V ~ 3.465V range; (5) RoHS compliance—the substitute is ROHS3 compliant.

Q: Are there any firmware or design changes required when switching to the LFXP2-30E-5FTN256C?

A: Bitstream compatibility between XP and XP2 series devices is not guaranteed. Design files must be recompiled using Lattice development tools targeting the LFXP2-30E-5FTN256C. The increased logic capacity and I/O pin count do not require design modifications but enable expanded functionality if needed.

Q: How do the embedded memory specifications compare?

A: The original part provides 405,504 RAM bits while the substitute provides 396,288 RAM bits. This represents a slight decrease of approximately 2.3%, which is negligible for most applications. Both devices offer comparable embedded memory resources.

Q: What is the impact of the additional 13 I/O pins on the substitute?

A: The substitute's 201 I/O pins versus the original's 188 pins provide additional signal routing flexibility. Designs utilizing only the original 188 pins remain fully compatible; the additional pins are available for expanded functionality without affecting existing signal assignments.

Q: Is the LFXP2-30E-5FTN256C the only available substitute?

A: Based on the provided manufacturer data, the LFXP2-30E-5FTN256C is the designated substitute. Lattice Semiconductor Corporation recommends this part for applications requiring LFXP20C-4FN256C functionality.