摘要:
A static, ternary content addressable memory (TCAM) includes a key cell and a mask cell coupled to intermediate match lines. The key cell is coupled to a first pull-down transistor and a first pull-up transistor. The mask cell is coupled to a second pull-down transistor and a second pull-up transistor. The first pull-down transistor and second pull-down transistor are connected in parallel and the first pull-up transistor and second pull-up transistor are connected in series. A match line output is also coupled to the first pull-down transistor and second pull-down transistor and further coupled to the first pull-up transistor and second pull-up transistor.
摘要:
Systems, circuits and methods for controlling the word line voltage applied to word line transistors (410) in Spin Transfer Torque Magnetoresistive Random Access Memory (STT-MRAM) are disclosed. One embodiment is directed to a STT-MRAM including a bit cell having a magnetic tunnel junction (MTJ, 405) and a word line transistor. The bit cell is coupled to a bit line (420) and a source line (440). A word line driver (432) is coupled to a gate of the word line transistor. The word line driver is configured to provide a word line voltage greater than a supply voltage below "a transition voltage of the supply voltage and to provide a voltage less than the supply voltage for supply voltages above the transition voltage.
摘要:
Exemplary embodiments of the invention are directed to magnetic elements including a passivation layer for isolation from other on-chip elements. One embodiment is directed to an apparatus comprising a magnetic tunnel junction (MTJ) element. The MTJ element comprises: a first ferromagnetic layer; a second ferromagnetic layer; an insulating layer disposed between the first and second ferromagnetic layers; and an MTJ passivation layer forming protective sidewalls disposed adjacent to the first ferromagnetic layer, the second ferromagnetic layer, and the insulating layer.
摘要:
Systems, circuits and methods for determining read and write voltages for a given word line transistor in Spin Transfer Torque Magnetoresistive Random Access Memory (STT-MRAM) are disclosed. A first voltage can be supplied to the write operations so that the write operations occur in the saturation region (454) of the word line transistor. A second voltage, which is less than the first voltage, can be supplied for read operations so that the read operations occur in the linear region (452) of the word line transistor.
摘要:
A memory and a method for operating the memory provided. In one aspect, the memory may be a PDP memory. The memory includes a control circuit configured to generate a first clock and a second clock in response an edge of a clock for an access cycle. A first input circuit is configured to receive an input for a first memory access based on the first clock. The first input circuit includes a latch. The second input circuit configured to receive an input for a second memory access based on the second clock. The second input circuit includes a flip-flop.