摘要:
A memory system 104 includes an array 200 of memory calls arranged in rows and columns and circuitry 208 for selectively performing logic operations on a bit of data stored in a selected call using a bit of received modifying data and a mode data bit for selecting a logic operation for performance. Circuitry 208 for modifying during an OR logic operation writing bit of the modifying data into the cell when the bit of modifying data is a logic one and maintaining an existing bit stored in call when the bit of modifying data is a logic zero. Memory system 104 further includes circuitry 207, 210 for receiving and latching the mode data and the modifying data through a single port.
摘要:
A memory system 104 includes an array 200 of memory cells arranged in rows and columns. Circuitry 208 is included for selectively performing logic operations on a bit of data stored in a selected cell using a bit of received modifying data and mode data bit for selecting a logic operation for performance. Circuitry 208 for performing logic operations is operable during an AND logic operation to write data into the cell when the bit of modifying data is a logic zero and maintaining an existing bit stored in the cell when the bit of modifying data is a logic one. Also included is circuitry 207, 210 for receiving and latching the mode data bit and the modifying data through a single port.
摘要:
Sensing circuitry including a sense amplifier 400 for latching a bit of data on a true bit line and a complementary bit of data on a complementary bit line. Circuitry 403, 404, 405 is included for performing boolean operations on bit of data latched in sense amplifier 400 in response to a bit of modifying data. Circuitry 403, 404, 405 during an AND operation pulls down the true bit line when the bit of modifying data a logic 0.
摘要:
A memory system 104 is provided which includes an array 200 of memory cells arranged in rows and columns. Circuitry 207, 208, 209, 210 is also provided for selectively performing logic operations on a bit of data stored in a selected memory cell using a bit of received modifying data. Circuitry 207, 208, 209, 210 for performing logic operations is operable during an AND operation to write the bit of modifying data into the selected memory cell when the bit of modifying data is a logic zero and maintains an existing bit stored in the selected cell when the bit of modifying data is a logic one.
摘要:
A display controller 104 for use with a display device 107 operable to display images on a screen. Display controller 104 includes circuitry 201-210 for presenting first data to the display device 107 for generating an image in a first areas of the screen, the first data being retrieved from an external frame buffer 108. A display controller 104 further includes circuitry 205, 210 for presenting second data to the display device 107 for generating an image in the second area of the screen, the second data being retrieved from an internal frame buffer 206.
摘要:
A memory 600 including an array of memory cells 201 and a plurality of input/output terminals 220 for receiving control bits during control cycles and accessing selected ones of the cells 201 during data access cycles. A command bit input terminal 221 is provided for receiving command bits for initiating the control cycles and a mapping input terminal 222 is provided for receiving a mapping enable signal to initiate a mapping mode. Circuitry 215/ 216 is provided for decoding control bits received during at least one control cycle occurring during a mapping mode for allowing a mapping of a set of addresses for accessing the cells of the array 201.
摘要:
A memory including a plurality of input/output terminals 220 for exchanging data bits during a data access cycle and receiving command and control bits during a command and control cycle. The memory further includes an array of memory cells 201, a data input/output circuitry for transferring data between the input/output terminals and the array of memory cells during the data access cycle, and control circuitry for controlling operations of the memory in response to command and control bits received at the input/output terminals during the command and control cycle.
摘要:
Embodiments of a memory are disclosed that may reduce the likelihood of a miss-read while reading a weak data storage cell. The memory may include a number of data storage cells, a column multiplexer, a first sense amplifier and a second sense amplifier, and an output circuit. The gain level of the first sense amplifier may be higher than the gain level of the second sense amplifier. The output circuit may include a multiplexer and the multiplexer may be operable to controllably select one of the outputs of the first and second sense amplifiers and pass the value of the selected sense amplifier. The output circuit may include a node that couples the outputs of the first and second sense amplifiers and the outputs of the first and second sense amplifiers may be able to be set to a high impedance state.
摘要:
A memory circuit 300 is provided which includes first and second banks 201a and 201b of memory cells arranged in rows and columns. Row decoder circuitry 210 is provided for selecting a row in at least one of the banks in response to row address. Row address circuitry 208, 209 is included for providing a sequence of row addresses to the row decoder circuitry in response to a single row address received at an address port to memory circuitry 300. Column decoder circuitry 213 is provided for selecting columns in each of the banks 201 in response to a column address. Column address circuitry 211, 212 is provided for presenting a sequence of column addresses to the column decoder circuitry in response to a single column address received at the address port.
摘要:
A digital voltage shifter 101 is provided which includes an input buffer 200 having an input for receiving data logic high signals at a first voltage, a true output and a complementary output. A static random access memory cell 220 is also included which operates in response to a voltage supply providing a second voltage differing from the first voltage and having a first input coupled to the true output of the input buffer and a second input coupled to the complementary output of the input buffer. An output driver 230 is further included which operates in response to the second supply voltage and is coupled to an output of the memory cell, the output driver outputting the received logic signals at the second voltage.