LFXP20E-3FN256C Lattice, LFXP20E-3FN256C Datasheet - Page 380

• Manufacturer Part Number: LFXP20E-3FN256C
• Description: IC FPGA 19.7KLUTS 188I/O 256-BGA
• Manufacturer: Lattice

Specifications of LFXP20E-3FN256C

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

Lattice Semiconductor
64-ball ucBGA BGA Breakout and Routing Example
This example places an ispMACH 4000ZE CPLD in a 4x4 mm, 0.4 mm pitch, 64-ball ucBGA package (LC4064ZE-
UMN64) in an n-layer stack up with maximum I/O utilization. This example demonstrates a modified dogbone
fanout technique to get access to all pins yet limiting number of layers and via schedules, while setting up layers to
use reference planes for high-speed signal traces.
Figure 14-3. CAM Artwork Screen Shots, 64-Ball ucBGA
Layer 1 Primary
Layer 3 Signal
Layer 5 Power
14-5
Layer 6 Secondary
PCB Layout Recommendations
Layer 4 Signal
Layer 2 GND
for BGA Packages