A multipackage module has multiple die of various types and having various
functions and, in some embodiments, the module includes a digital
processor, an analog device, and memory. A first die, having a
comparatively large footprint, is mounted onto first die attach region on
a surface of a first package substrate. A second die, having a
significantly smaller footprint, is mounted upon the surface of the first
die, on a second die attach region toward one edge of the first die. The
first die is electrically connected by wire bonds to conductive traces in
the die-attach side of the substrate. The second die is electrically
connected by wire bonds to the first package substrate, and may
additionally be electrically connected by wire bonds to the first die. In
some embodiments a spacer is mounted upon the first die, on a spacer
attach region of the surface of the first die that is not within the die
attach region, and which may be generally near a margin of the first die.
A land grid array (LGA) package is inverted and mounted upon the spacer,
with one margin of the LGA package near the edge of the spacer, so that
much of the LGA package overhangs the second die. In other embodiments an
additional spacer is mounted upon the first die, on a second spacer
attach region that is not within the die attach region and not within the
first spacer attach region, and the inverted LGA package is mounted upon
both spacers. In still other embodiments a first spacer having a
thickness approximating the thickness of the second die is mounted in a
spacer attach region upon the first die; additional spacers are mounted
upon both the first spacer and the second die, and the inverted LGA
package is mounted upon the additional spacers. The LGA package is
electrically connected to the first package substrate by wire bonds
between bond sites on the LGA package and bond sites on the BGA package.