摘要:
A semiconductor integrated circuit includes a control data storage circuit (6) having nonvolatile storage devices with programmed control data and a latch circuit for holding data read out from the storage devices, and a read control circuit (7) for controlling read operations of the control data, which are built in a semiconductor chip. The control data storage circuit (6) is divided into groups (1, 2), and the read control circuit (7) generates read control signals for the groups (1, 2) at different timings, using an output of an internal potential detecting circuit 41 as the timing reference, thereby preventing the peak of power consumption from unacceptably rising during reading operations.
摘要:
A DRAM, including a plurality of banks each having a plurality of sub-arrays, and sense amplifier circuits commonly shared by sub-arrays in different banks, has a row access mode for activating a sub-array selected from each bank for reading or writing data, and a refresh mode for activating a plurality of sub-arrays in each bank and refreshing memory cell data therein at substantially the same timing. Sub-arrays in each bank activated at substantially the same timing in the refresh mode are more than sub-arrays in each bank activated in the row access model. Thereby, occurrence of operation constrains is minimized to ensure high-speed operation and improve the system performance of DRAMs employing the non-independent bank system.
摘要:
A DRAM, including a plurality of banks each having a plurality of sub-arrays, and sense amplifier circuits commonly shared by sub-arrays in different banks, has a row access mode for activating a sub-array selected from each bank for reading or writing data, and a refresh mode for activating a plurality of sub-arrays in each bank and refreshing memory cell data therein at substantially the same timing. Sub-arrays in each bank activated at substantially the same timing in the refresh mode are more than sub-arrays in each bank activated in the row access model. Thereby, occurrence of operation constrains is minimized to ensure high-speed operation and improve the system performance of DRAMs employing the non-independent bank system.
摘要:
A semiconductor device comprises a board; a semiconductor chip; a memory controller operative to control the semiconductor chip; and a power supply chip having a capacitor. The semiconductor chip is stacked on the board. The memory controller and the power supply chip are stacked on the semiconductor chip. The capacitor is used to stabilize the voltage applied to the semiconductor chip.
摘要:
A semiconductor device comprises a board; a semiconductor chip; a memory controller operative to control the semiconductor chip; and a power supply chip having a capacitor. The semiconductor chip is stacked on the board. The memory controller and the power supply chip are stacked on the semiconductor chip. The capacitor is used to stabilize the voltage applied to the semiconductor chip.
摘要:
A semiconductor storage device comprises a memory cell array including memory cells, and bit lines for transfer of data in the memory cells; an amplifier circuit connected to the bit lines to amplify data in the memory cells; a first switching element connected between the bit lines and the amplifier circuit; a first reference voltage source which applies to the gate of the first switching element a voltage for turning the first switching element ON; a second switching element and a third switching element connected in series between the gate of the first switching element and the first reference voltage source, said second switching element and said third switching element being connected in parallel to each other; a second reference voltage source which applies to the gates of the second and third switching elements a voltage for turning the second and third switching elements ON; and a first timing shift circuit connected between the gate of the third switching element and the second reference voltage source to delay the operation of the third switching element from the operation of the second switching element.
摘要:
A dynamic type semiconductor memory apparatus performs an operation of continuous column access at a high speed while minimizing an increase of a chip size. The dynamic type semiconductor memory apparatus includes first and second memory cell groups divided based on a column address, a first bit line connected to the first memory cell group, a second bit line connected to the second memory cell group, first and second local data lines, and a column selection unit configured to connect the first and second bit lines to the first and second local data line based on a column address. The dynamic type semiconductor memory apparatus further includes first and second master data line, a local data line selecting unit configured to connect the first and second local data lines to the first and second master data lines, respectively, a DBR configured to read data from the first or second master data lines, and a DWB configured to write data to the first or second master data lines.
摘要:
A dynamic type semiconductor memory apparatus performs an operation of continuous column access at a high speed while minimizing an increase of a chip size. The dynamic type semiconductor memory apparatus includes first and second memory cell groups divided based on a column address, a first bit line connected to the first memory cell group, a second bit line connected to the second memory cell group, first and second local data lines, and a column selection unit configured to connect the first and second bit lines to the first and second local data line based on a column address. The dynamic type semiconductor memory apparatus further includes first and second master data line, a local data line selecting unit configured to connect the first and second local data lines to the first and second master data lines, respectively, a DBR configured to read data from the first or second master data lines, and a DWB configured to write data to the first or second master data lines.
摘要:
A semiconductor memory device is provided which ensures the symmetry of memory data transmission time and a high-speed operation and has large write/read operation margin with no need of increasing the chip area. By placing a horizontally long peripheral circuit section in the middle in the vertical direction of a semiconductor chip, placing a vertically long shift register section above and below and perpendicularly to the peripheral circuit section, and making the memory core and shift register arrangement symmetrical in the horizontal direction, the data/signal lines between the memory core and the shift register section can be made short and the symmetry of the interconnections can be maintained, which allows the implementation of a high-speed and large-margin semiconductor memory device. In addition, a faster semiconductor memory can be obtained by forming the shift register section by stacking shift registers each corresponding to a data block and selecting the order in which the shift registers are stacked so that the length of interconnections between the peripheral circuit and the shift register is minimized.
摘要:
A semiconductor memory device is provided which ensures the symmetry of memory data transmission time and a high-speed operation and has large write/read operation margin with no need of increasing the chip area. By placing a horizontally long peripheral circuit section in the middle in the vertical direction of a semiconductor chip, placing a vertically long shift register section above and below and perpendicularly to the peripheral circuit section, and making the memory core and shift register arrangement symmetrical in the horizontal direction, the data/signal lines between the memory core and the shift register section can be made short and the symmetry of the interconnections can be maintained, which allows the implementation of a high-speed and large-margin semiconductor memory device. In addition, a faster semiconductor memory can be obtained by forming the shift register section by stacking shift registers each corresponding to a data block and selecting the order in which the shift registers are stacked so that the length of interconnections between the peripheral circuit and the shift register is minimized.