Circuit for a read-only memory organized in rows and columns to prevent bit line potentials from dropping

摘要

Circuit arrangement for a read-only memory organized in rows and columns, including bit lines having potentials applied thereto, and selection circuits being connected to the bit lines, being addressed by a bit line decoder and containing at least one selection transistor having a cut-off voltage and a gate potential, for preventing bit line potentials from dropping below a given value at which the selection circuits become conducting without having been selected by the bit line decoder, including current-feed lines each being connected to a different one of the bit lines for feeding current to the bit lines and for ensuring that for each of the selection circuits not selected by the bit line decoder the difference between at least one gate potential of the participating selection transistors and the respective bit line potential is smaller than the cut-off voltage of the respective selection transistors.