摘要:
An asymmetrical delay generator for use in a clock chopping circuit is disclosed. The circuit has a complementary transistor switch memory cell in it. That cell is operated in a mode where one half of the cell operates in saturation mode. That half of the cell controls the pulse width of the chopper. The other half of the cell is not operated in saturation and controls the resetting of the chopper and hence the maximum clock rate at which the circuit will operate.
摘要:
The disclosure is directed to an improved random access memory (RAM). More particularly, to improved word line selection circuitry for use in an array employing CTS (Complementary Transistor Switch) type memory cells.
摘要:
Disclosed is an improved bit selection circuit for a RAM, in particular one employing CTS (complementary transistor switch) cells. The bit select circuitry includes interconnected first and second level matrix decoders, each memory column has a pair of bit lines, each pair of bit lines has connected thereto a bit select circuit, each of the bit select circuits being connected to an output of the second level decoder, a bit up-level clamp circuit connected to each of the bit select circuits of each pair of bit lines, each of the bit select circuits including a first circuit for increasing the speed of selection of the selected pair of lines, the bit up-level clamp circuit cooperating with the bit select circuit of the selected pair of bit lines for positively limiting the upper potential level of the selected pair of bit lines, and each of the bit select circuits including a second circuit for increasing the speed of deselection of the selected pair of bit lines.
摘要:
A programmable Local Clock Buffer has a single inverter between the clock input and the delayed clock output. A transistor switch modulates the single inverter stage between a clock signal transmit state and a non-transmitting state. A combination of delay select bits control the timing of the beginning and ending of the transmit state of the inverter relative to the clock input via the transistor switch.
摘要:
A cache memory high performance pseudo dynamic address compare path divides the address into two or more address segments. Each segment is separately compared in a comparator comprised of static logic elements. The output of each of these static comparators is then combined in a dynamic logic circuit to generate a dynamic late select output.
摘要:
A test circuit and programmable voltage divider that may be used in the test circuit. The programmable voltage divider develops a voltage difference signal that may be digitally selected. The test circuit may be used to test and characterize sense amplifiers. The programmable voltage divider develops a signal with a selected polarity and magnitude that is provided to a sense amplifier being tested. The sense amplifier is set and its output latched. The latch contents are checked against an expected value. The difference voltage may be changed and the path retested to find passing and failing points.
摘要:
A CMOS static random access memory (SRAM) cell array, an integrated chip including the array and a method of accessing cells in the array with improved cell stability. Bit lines connected to half selected cells in the array are floated during cell accesses for improved cell stability.
摘要:
A domino SRAM is provided with active pull-up PFET devices that overwhelm “slow to write but very fast to read” cells and allow the cells to recover from timing mismatch situations. This approach allows the traditional “bit select” clamp to actively control the “local select” through “wired-or” PFET pull-up transistors. Separate read and write global “bit line” pairs allow the read and write performance to be optimized independently.
摘要:
An improved method for performing a write through operation during a write operation of a SRAM cell (10) of a SRAM array (1) is disclosed. The method comprises suppressing a false write through data propagation at an output node (C, F) of the SRAM array (1) in case of a failure causing transition at a first node (t) or a second node (c) of the SRAM cell (10) by using information about the input data (data, data_b) to be written in the SRAM cell (10) and read data propagation paths to retain the output node (C, F) after a global bit line (gb_t, gb_c) at a precharge level independently from a logical level of the global bit line (gb_t, gb_c), if a corresponding node (c, t) of the SRAM cell (10) is performing the failure causing transition based on input data (data, data_b) to be written in the SRAM cell (10).