LFXP20C-4FN256I Lattice, LFXP20C-4FN256I Datasheet - Page 381

• Manufacturer Part Number: LFXP20C-4FN256I
• Description: IC FPGA 19.7KLUTS 188I/O 256-BGA
• Manufacturer: Lattice

Specifications of LFXP20C-4FN256I

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

PCB Layout Recommendations
Lattice Semiconductor
for BGA Packages
100-ball csBGA BGA Breakout and Routing Examples
These examples place a MachXO PLD in a 8x8 mm, 0.5 mm pitch, 100-ball csBGA package (LXMXO640-
M100/MN100) into two fabrication scenarios. One for a 6-layer stack up with maximum I/O utilization and a 4-layer
with about 15% fewer I/Os. The 4-layer (Example #2) design makes maximum use of via and trace geometry to
reduce layer count and ease fabrication while still maintaining high I/O usage.
Figure 14-4. CAM Artwork Screen Shots, Example #1, 100-ball csBGA
Layer 1 Primary
Layer 2 GND
Layer 3 Power
Layer 4 Secondary
14-6