摘要:
In a serially working memory unit with a memory matrix, a row selection unit and a column selection unit are configured such that, given faulty rows or columns, only correctable, single errors or errors of few successive bits occur. This memory unit offers advantages particularly for read-only memories since, due to the memory contents that are already determined during manufacture, substitute rows or columns can thereby not be provided.
摘要:
The memory cell arrangement has MOS transistors (10) connected between bitlines (4, 4.sub.1) and connected row-by-row by means of selection lines (5). For pre-charging of all the bitlines (4, 4.sub.1) without a blocking of an access to these lines, further MOS transistors (20), connected between the bitlines (4, 4.sub.1) and a supply line (7), are provided, whose gate terminals (20.sub.2) are connected to a common pre-charging line (6).
摘要:
A digital memory matrix having memory cells in rows and columns, addressing of the memory cells is accomplished by control devices which perform arbitrary jumps of address, thereby avoiding addressing on adjacent lines. The jump increment is selectable. The control devices are control chains, two of which are provided, and the outputs of the control chains are connected to linking elements that in turn are connected to the memory lines. The linking elements are provided in groups.
摘要:
In the pointer circuit, only one static memory (1) is respectively individually allocated to each output ( . . . , A.sub.n-1, A.sub.n, A.sub.n+1, . . . ), of which each respectively has a pair of mutually complementary memory terminals (Q, Q). The two terminals are in two stored logical states ("1," "0") differing from one another. A memory terminal (Q) of each memory is connected with the output allocated to this memory. The memories are controlled by clock signals. This results in advantageous surface requirement and power loss low, as well as high speed.
摘要:
The invention concerns a multi-valued read-only storage location which is constructed symmetrically for storing a first or second state (M, M"') and asymmetrically for storing at least a third state (M', M"). The advantage thereof is above all that the storage capacity is doubled without notably increasing expenditure and without impairing the signal-to-noise ratio with respect to conventional storage locations. The invention is suitable for electrically programmable and mask-programmable read-only memories, in particular for those used in low voltage technology.
摘要:
A matrix memory with memory transistors arranged in rows and columns. The memory transistors can be addressed via word lines and bit lines. Control transistors are driven via control lines. The control transistors can short-circuit all of the columns of the cell array, i.e. the bit lines, except for the column in which a memory cell is located which is to be read out.
摘要:
A circuit with a delay stage formed by an invertor having high-impedance transistors and, connected in series therewith, an invertor having low-impedance transistors MOS capacitors are provided between the gates of the transistors of the low-impedance invertor and the output of the delay stage. By means of this circuit, delay stages with steep edges can be realized with comparatively less outlay on components.
摘要:
A matrix memory with improved virtual ground architecture and evaluation circuit from which the informational content of two neighboring memory cells can be simultaneously read at a bit line during a read event. The memory cells with information "0" are realized, for example, by a respective field effect transistor with low threshold voltage. Every bit line provided for the readout is connected to the drain terminals of two neighboring field effect transistors in the same row. The source terminals are applied to one of two potentials that differ from one another. Depending upon which of the field effect transistors is conductive upon selection of the pertinent word line, different resultant potentials are obtained on the bit line. Such potentials are then converted in the evaluation circuit into binary signals that represent the read information.
摘要:
Memory cells are organized in cell fields in word lines and bit lines in the manner of a matrix. The bit lines are actuated by a bit decoder for loading with a mass potential, and by a blocking decoder for loading the bit lines with a blocking potential. The word lines are actuated by a word decoder for loading the word lines with a programming voltage or a protective voltage. The information value to be programmed is prestored in the cell field.
摘要:
One or more embodiments are related to a method of operating a phase-change memory array, including: providing the phase-change memory array, the phase-change memory array including a phase-change memory element in series with an access device between a first address line and a power line; causing a first current through the memory element from the first address line to the power line; and causing a second current through the memory element from the power line to the first address line.