A memory module, which enables a module-internal, cross-chip electrical
functional test of a plurality of integrated memory chips arranged on a
printed circuit board of the memory module, includes a test device
arranged separately from the memory chips on the printed circuit board.
The test device relies on a clock signal provided by an external tester
and generates the test signals required for carrying out the functional
test and forwards the signals via control lines, address lines, data
lines, and lines for the selection of individual memory chips to the
latter. The partial integration of test functions into the test device
enables a greater independence with respect to external electromagnetic
interference influences without the space requirement of the memory
module being increased overmuch.