Lattice Semiconductor Corporation LX256B-5F484C

The ispGDX2 architecture uses GDX blocks connected through a Global Routing Pool to configure data and control paths between external signals. Banked sysIO interfaces connect those paths to the board. LX256B-5F484C is the standard F484 ordering variant; the manufacturer's ordering tables distinguish it from the FN484 lead-free variant.

Lattice's discontinuation table calls this exact model a 484-fpBGA. LCDChip records the existing package name 484-BBGA, and its package register maps that name to 484-BBGA.jpg. Use the manufacturer's 484-ball mechanical drawing and pin map for the actual land pattern; do not assume F484 and FN484 have identical material or assembly requirements.

Mechanical checks

• Check ball A1 orientation and every assigned ball.
• Verify BGA land pattern and assembly profile against the actual package.
• Confirm package finish from manufacturer documentation and lot records.

The catalog JPG is missing locally and returns HTTP 404 on the production site; it is not a verified mechanical drawing.

The Lattice ispGDX2-256 484-fpBGA table supplies the ball-level assignment. These functional groups do not replace that table or the board's implemented pin constraints.

Consult the complete data sheet for absolute maximum ratings, recommended operation, I/O-bank compatibility, timing and BGA dimensions.

Lattice's discontinuation notice recommends LX256V-5F484C and marks the package pin-compatible with a footnote requiring different supply voltages. The proposed V variant uses a 3.3 V core, whereas this B variant uses a 2.5 V core. It is therefore not an electrical drop-in without reviewing core and bank supplies, pin mapping, configuration, timing and qualification.

No internal alternative-product link is asserted without an exact LCDChip API catalog match and engineering approval. The FN lead-free variant also requires separate package-finish verification.

Lattice Semiconductor's ispGDX2 family data sheet and ordering tables identify the LX256B 2.5 V device class, 256 I/Os, 5.0 ns grade and F484 package option. Lattice PCN09I-10 explicitly lists LX256B-5F484C among the mature-device discontinuation items.

Verify the complete F484C marking, manufacturer traceability, package finish, storage conditions and programmed function against the original design records. Do not infer the material finish of this F484 part from a photograph of the FN484 variant. The missing catalog JPG cannot establish device identity.

Check the 2.5 V core rail, independent I/O-bank rails and references, full 484-ball map, timing, JTAG/programming file and assembly requirements against manufacturer documents. Account for the discontinuation notice in maintenance planning. Restore and verify the production package JPG before publication.