摘要:
A memory apparatus is configured by obtaining test information for each of group of memory locations within the memory apparatus, compressing the test information to produced compressed test information and, based on the compressed test information, replacing a group of redundant memory circuits respectively associated with the group of memory locations.
摘要:
A precharge command can be issued to a single bank or a precharge-all command can be issued to all banks of an integrated circuit memory device (e.g., DRAM circuit) at any time during normal operation of the device. Internal circuits are provided to decode the respective commands and send them to the different independent memory banks of the integrated circuit memory device. A local precharge control unit (or circuit) is present inside each of the memory banks that can receive and process the decoded precharge commands. If certain specified timing conditions are met, the local precharge control unit can issue and store a precharge request for a specific bank. The precharge request can be held back until all timing requirements are fulfilled. The precharge request can then be automatically executed.
摘要:
Implementations are presented herein that relate to a fuse device, an integrated circuit including a fuse device, a method of implementing a fuse device and a method of programming a fuse device.
摘要:
The invention relates to a ROM memory cell comprising a first terminal connected to a word line, comprising a second terminal and comprising a third terminal, the second terminal being connected to a bit line and/or the third terminal being connected to a supply line for precharging the third terminal. The ROM memory cell according to the invention is distinguished by the fact that the same reference potential is in each case applied to the first terminal, the second terminal and/or the third terminal in a standby operating mode. The invention furthermore relates to a ROM memory component comprising such ROM memory cells, and to a method for reading from the ROM memory cell.
摘要:
A read-out circuit is disclosed, where the circuit reads information out of a memory unit comprising two non-volatile memory cells. The cells have different programming states, and the memory information of the memory unit is given by the programming states of the two memory cells. The read-out circuit has a volatile signal memory, the inputs of which are connected to the read outputs of the memory cells.
摘要:
A method supplies voltage to a bit line of a memory device. The method includes precharging, with a precharging device, the bit line to an output potential, deactivating the precharging device during a read action related to the bit line, reading, during the read action, an information via the bit line, and routing, during the read action, a virtual voltage supply line to a supply potential of the memory device to supply voltage to memory cells of the memory device assigned to the bit line. The precharging device of the bit line is activated/deactivated as a function of the potential of the virtual voltage supply line.
摘要:
A read-out circuit is disclosed, where the circuit reads information out of a memory unit comprising two non-volatile memory cells (F2, F3). The cells have different programming states, and the memory information of the memory unit is given by the programming states of the two memory cells (F2, F3). The read-out circuit has a volatile signal memory (INV4, INV5), the inputs of which are connected to the read outputs of the memory cells (F2, F3).
摘要:
A circuit for refreshing data stored in an array of dynamic memory cells is provided. The circuit includes an integrated circuit chip. The chip has the array of memory cells formed thereon. The circuit also includes a refresh rate analysis circuit for determining data retention times in each one of the memory cells and from such determination refresh address modification signals. Also provided is a refresh address generator formed on the chip and fed by refresh command signals generated externally of the chip and by the address modification signals. The refresh address generator supplies an internal refresh commands along with refresh addresses to the array of memory cells. The cells have data stored therein refreshed in response to such internal refresh commands. The refresh rate analysis circuit determines cells in the array having data retention times less than a predetermined value.
摘要:
The present invention provides for evaluating a programmable anti-fuse element. For a programmable transistor anti-fuse, the gate of the anti-fuse is precharged with a predetermined voltage and/or current and the anti-fuse is subsequently evaluated. In one embodiment a precharge voltage sufficient to turn ON a transistor is provided to the gate. Here, an intact (unblown) transistor remains ON over a period of time and a damaged (blown) transistor dissipates the charge voltage and turns OFF. The status of the transistor is subsequently determined by evaluating the resistance between the drain and source. A high resistance indicates a blown condition and a low resistance indicates an unblown condition. In another embodiment, a small current is provided to the gate in which the small current is greater than a leakage current for an intact transistor and is less than a leakage current for a damaged transistor. An intact transistor charges to an ON state over a period of time but a damaged transistor does not because it's leakage current is greater than the small current provided to the gate. Again, the status of the transistor anti-fuse is subsequently determined by evaluating the resistance between the drain and source.
摘要:
A sense amplifier for use with a dynamic random access memory is formed in a silicon integrated circuit. The pitch of an array of such sense amplifiers is equal to the pitch of pairs of bit lines of a memory array. Each array of sense amplifiers is formed from four rows of transistors of a given n or p-channel type Metal Oxide Semiconductor (MOS) transistor having a U-shaped gate electrode. The gate electrode of the transistors in each row of transistors of the sense amplifier is offset from those in a previous row by a preselected amount. The bit lines passing through the sense amplifier are straight, with no offsets to affect photolithographic performance, and no protuberances to increase the capacitance of the bit lines. Such an array of sense amplifiers has a size equivalent to the minimum size of the pairs of bit lines, and thus does not cause any increase in the width of the array of memory cells.