LCMXO640C-5FN256C Equivalent & Substitute Parts

Part Overview

The LCMXO640C-5FN256C is a MachXO Field Programmable Gate Array (FPGA) IC from Lattice Semiconductor Corporation, featuring 640 logic elements and 159 I/O pins in a 256-BGA package. This device is classified as obsolete, making substitute parts necessary for new designs and ongoing production requirements. The LCMXO640C-5FTN256C serves as a direct functional equivalent with improved product status and compliance certifications.

Substiute Parts

LCMXO640C-5FN256C

Lattice Semiconductor CorporationIn Stock: 959LCMXO640C-5FN256C Datasheet

Current PartRFQ

LCMXO640C-5FTN256C

Lattice Semiconductor CorporationIn Stock: 2287LCMXO640C-5FTN256C Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The LCMXO640C-5FTN256C qualifies as a direct substitute for the LCMXO640C-5FN256C based on the following matching parameters:

• Identical logic element count (640)
• Identical I/O pin count (159)
• Identical LAB/CLB count (80)
• Identical voltage supply range (1.71V ~ 3.465V)
• Identical operating temperature range (0°C ~ 85°C)
• Identical series designation (MachXO)
• Identical MSL rating (3, 168 Hours)
• Identical HTSUS classification (8542.39.0001)

The primary differences are package designation (256-FBGA versus 256-FTBGA), product status (Active versus Obsolete), and compliance certifications (RoHS3 and REACH status).

Parameter Comparison

Engineering Selection Recommendations

The LCMXO640C-5FTN256C is the appropriate selection for new designs and production applications. This part maintains functional equivalence with the obsolete LCMXO640C-5FN256C while offering Active product status and current compliance certifications. The substitute part carries RoHS3 compliance and REACH unaffected status, meeting modern regulatory requirements. Both parts share identical electrical specifications, logic capacity, and thermal operating ranges, ensuring direct functional compatibility in applications designed for the MachXO 640-element FPGA platform.

Frequently Asked Questions (FAQ)

Q: Can LCMXO640C-5FTN256C directly replace LCMXO640C-5FN256C in existing designs?

A: Yes. Both parts share identical logic element counts (640), I/O pin counts (159), voltage supply ranges (1.71V ~ 3.465V), and operating temperature ranges (0°C ~ 85°C). The functional specifications are equivalent.

Q: What is the difference between 256-FBGA and 256-FTBGA packages?

A: Both are 256-pin Ball Grid Array packages with 17x17 footprints. The FBGA designation refers to the original package type, while FTBGA represents the current production variant. Physical dimensions and pin assignments remain compatible for PCB layout purposes.

Q: Why is the LCMXO640C-5FN256C marked as obsolete?

A: Lattice Semiconductor has transitioned production to the LCMXO640C-5FTN256C, which maintains identical electrical and functional specifications while offering improved compliance certifications and active product support.

Q: Are there compliance differences between these parts?

A: The LCMXO640C-5FTN256C carries RoHS3 compliance and REACH unaffected status. The original part does not specify these certifications. Both parts share identical MSL ratings (3, 168 Hours) and HTSUS classifications.

Q: What is the ECCN difference, and does it affect component selection?

A: The LCMXO640C-5FN256C carries ECCN 3A991D, while the substitute carries EAR99. This reflects updated export control classifications but does not affect the technical suitability of the component for equivalent applications.