LFXP15E-4FN256C Lattice, LFXP15E-4FN256C Datasheet - Page 378
LFXP15E-4FN256C
Manufacturer Part Number
LFXP15E-4FN256C
Description
IC FPGA 15.5KLUTS 188I/O 256-BGA
Manufacturer
Lattice
Datasheet
1.LFXP3C-3T100C.pdf
(397 pages)
Specifications of LFXP15E-4FN256C
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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Quantity
Price
Company:
Part Number:
LFXP15E-4FN256C
Manufacturer:
Lattice Semiconductor Corporation
Quantity:
10 000
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Figure 14-1. BGA Breakout Routing Terms
Lattice provides BGA breakout and routing examples for various fine pitch packages
port/pcbdesignsupport/bgabreakoutroutingexample/index.cfm). Each package example is built to comply with
IPC7351 (www.ipc.org) specifications and nomenclature conventions. Some examples include different layout
options depending on design and cost goals. For example, the 256-ball chip array BGA (BN256) examples demon-
strate a design with fully-utilized I/Os, fine trace width and pitch, on a 6-layer PCB stack-up and a less expensive
design with relaxed design rules, and fewer I/O pads routed, on a 4-layer PCB stack up.
Table 14-3. Package Layout Example Summary
For mechanical dimension details on packages, see the Lattice
In order to show how some of the routing challenges are solved, examples are provided for fine-pitch BGA pack-
ages from the MachXO™ and the ispMACH
packaged products.
Package
UMN64
MN100
MN132
MN144
BN256
MN64
Example #
1
1
2
1
2
1
2
1
2
1
Pitch (mm)
0.5
0.4
0.5
0.5
0.5
0.5
0.5
0.5
0.8
0.8
Signal/
Layers
Power
6
6
4
4
4
4
6
4
6
4
®
4000ZE families. Principles for these apply to other Lattice BGA
Space (mm)
.100/.100
.100/.100
.085/.085
.100/.100
.085/.085
.100/.100
.100/.100
.100/.100
.100/.100
.100/.100
Width-
Trace/
14-3
Package Diagrams
Ball Pad
(mm)
.23
.18
.23
.23
.23
.23
.23
.23
.35
.35
PCB Layout Recommendations
Ball Mask
(mm)
.33
.28
.38
.38
.38
.38
.33
.38
.50
.50
document.
(www.latticesemi.com/sup-
for BGA Packages
Via Pad
(mm)
.30
.25
.45
.45
.40
.40
.30
.30
.40
.40
Via Drill
(mm)
.125
.125
.125
.125
.10
.20
.20
.15
.15
.15
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