Abstract: Methods of forming transistors and transistors are disclosed, such as a transistor having a gate dielectric over a semiconductor having a first conductivity type, a control gate over the gate dielectric, source and drain regions having a second conductivity type in the semiconductor having the first conductivity type, and strips having the second conductivity type within the semiconductor having the first conductivity type and interposed between the control gate and at least one of the source and drain regions.

Abstract: Transistors for use in semiconductor integrated circuit devices including a first source/drain region of the transistor is formed around a perimeter of a channel region, and a second source/drain region formed to extend below the channel region such that the channel region is formed around a perimeter of the source/drain region. Such transistors should facilitate a reduction in edge effect and leakage as the channel of the transistor is not bordering on an isolation region. Additionally, the use of a source/drain region extending through a channel region facilitates high-power, high-voltage operation.

Abstract: A method and apparatus for improving output skew across the data bus of a synchronous integrated circuit device. The device includes a clock input buffer that receives a system clock signal and generates a buffered clock signal, a delay line that receives the buffered clock signal and generates a delayed clock signal, and an output circuit including output signal paths for outputting the output signals synchronously with the system clock signal by using the delayed clock signal. At least one of the output signal paths includes a delay circuit and an output buffer. Each delay circuit provides a programmable delay to the delayed clock signal to generate a unique delayed clock signal used to clock an output signal into the respective output buffer. By programming the delays based upon output skew, the output skew can be improved.

Abstract: A delay-locked loop adjusts a delay of a clock signal that is generated in response to an external clock signal. The clock signal is applied to an output buffer to clock the buffer so that data or clock signals from the buffer are synchronized with the external clock signal. The output buffer operates in a full-drive and reduced-drive mode in response to an output drive strength bit having first and second logic states, respectively. The delay-locked loop adjusts the delay of the clock signal in response to the state of the output drive strength bit to keep the data or clock signals from the buffer synchronized during both modes of operation.

Abstract: A timing control circuit includes a synchronization circuit and a detection circuit. The synchronization circuit includes a main delay line configured to receive an input clock signal and delay the input clock signal by a time interval to generate an output clock signal and a control circuit configured to control the main delay line to vary the time interval to synchronize the input clock signal with a feedback clock signal generated from the output clock signal responsive to assertion of an enable signal. The detection circuit is configured to receive the input clock signal and the feedback clock signal, detect a phase alignment error between the input clock signal and the feedback clock signal, and assert the enable signal responsive to the phase alignment error exceeding a predetermined amount.

Abstract: A method and apparatus for improving output skew across the data bus of a synchronous integrated circuit device. The device includes a clock input buffer that receives a system clock signal and generates a buffered clock signal, a delay line that receives the buffered clock signal and generates a delayed clock signal, and an output circuit including output signal paths for outputting the output signals synchronously with the system clock signal by using the delayed clock signal. At least one of the output signal paths includes a delay circuit and an output buffer. Each delay circuit provides a programmable delay to the delayed clock signal to generate a unique delayed clock signal used to clock an output signal into the respective output buffer. By programming the delays based upon output skew, the output skew can be improved.

Abstract: A delay-locked loop adjusts a delay of a clock signal that is generated in response to an external clock signal. The clock signal is applied to an output buffer to clock the buffer so that data or clock signals from the buffer are synchronized with the external clock signal. The output buffer operates in a full-drive and reduced-drive mode in response to an output drive strength bit having first and second logic states, respectively. The delay-locked loop adjusts the delay of the clock signal in response to the state of the output drive strength bit to keep the data or clock signals from the buffer synchronized during both modes of operation.

Abstract: A method and apparatus for improving output skew across the data bus of a synchronous integrated circuit device. The device includes a clock input buffer that receives a system clock signal and generates a buffered clock signal, a delay line that receives the buffered clock signal and generates a delayed clock signal, and an output circuit including output signal paths for outputting the output signals synchronously with the system clock signal by using the delayed clock signal. At least one of the output signal paths includes a delay circuit and an output buffer. Each delay circuit provides a programmable delay to the delayed clock signal to generate a unique delayed clock signal used to clock an output signal into the respective output buffer. By programming the delays based upon output skew, the output skew can be improved.

Abstract: A delay-locked loop adjusts a delay of a clock signal that is generated in response to an external clock signal. The clock signal is applied to an output buffer to clock the buffer so that data or clock signals from the buffer are synchronized with the external clock signal. The output buffer operates in a full-drive and reduced-drive mode in response to an output drive strength bit having first and second logic states, respectively. The delay-locked loop adjusts the delay of the clock signal in response to the state of the output drive strength bit to keep the data or clock signals from the buffer synchronized during both modes of operation.

Abstract: A delay-locked loop adjusts a delay of a clock signal that is generated in response to an external clock signal. The clock signal is applied to an output buffer to clock the buffer so that data or clock signals from the buffer are synchronized with the external clock signal. The output buffer operates in a full-drive and reduced-drive mode in response to an output drive strength bit having first and second logic states, respectively. The delay-locked loop adjusts the delay of the clock signal in response to the state of the output drive strength bit to keep the data or clock signals from the buffer synchronized during both modes of operation.

Abstract: A delay-locked loop adjusts a delay of a clock signal that is generated in response to an external clock signal. The clock signal is applied to an output buffer to clock the buffer so that data or clock signals from the buffer are synchronized with the external clock signal. The output buffer operates in a full-drive and reduced-drive mode in response to an output drive strength bit having first and second logic states, respectively. The delay-locked loop adjusts the delay of the clock signal in response to the state of the output drive strength bit to keep the data or clock signals from the buffer synchronized during both modes of operation.

Abstract: A timing control circuit includes a synchronization circuit and a detection circuit. The synchronization circuit includes a main delay line configured to receive an input clock signal and delay the input clock signal by a time interval to generate an output clock signal and a control circuit configured to control the main delay line to vary the time interval to synchronize the input clock signal with a feedback clock signal generated from the output clock signal responsive to assertion of an enable signal. The detection circuit is configured to receive the input clock signal and the feedback clock signal, detect a phase alignment error between the input clock signal and the feedback clock signal, and assert the enable signal responsive to the phase alignment error exceeding a predetermined amount.

Abstract: A delay-locked loop adjusts a delay of a clock signal that is generated in response to an external clock signal. The clock signal is applied to an output buffer to clock the buffer so that data or clock signals from the buffer are synchronized with the external clock signal. The output buffer operates in a full-drive and reduced-drive mode in response to an output drive strength bit having first and second logic states, respectively. The delay-locked loop adjusts the delay of the clock signal in response to the state of the output drive strength bit to keep the data or clock signals from the buffer synchronized during both modes of operation.

Abstract: A delay-locked loop adjusts a delay of a clock signal that is generated in response to an external clock signal. The clock signal is applied to an output buffer to clock the buffer so that data or clock signals from the buffer are synchronized with the external clock signal. The output buffer operates in a full-drive and reduced-drive mode in response to an output drive strength bit having first and second logic states, respectively. The delay-locked loop adjusts the delay of the clock signal in response to the state of the output drive strength bit to keep the data or clock signals from the buffer synchronized during both modes of operation.

Abstract: A delay-locked loop adjusts a delay of a clock signal that is generated in response to an external clock signal. The clock signal is applied to an output buffer to clock the buffer so that data or clock signals from the buffer are synchronized with the external clock signal. The output buffer operates in a full-drive and reduced-drive mode in response to an output drive strength bit having first and second logic states, respectively. The delay-locked loop adjusts the delay of the clock signal in response to the state of the output drive strength bit to keep the data or clock signals from the buffer synchronized during both modes of operation.

Abstract: A method and apparatus for improving output skew across the data bus of a synchronous integrated circuit device. The device includes a clock input buffer that receives a system clock signal and generates a buffered clock signal, a delay line that receives the buffered clock signal and generates a delayed clock signal, and an output circuit including output signal paths for outputting the output signals synchronously with the system clock signal by using the delayed clock signal. At least one of the output signal paths includes a delay circuit and an output buffer. Each delay circuit provides a programmable delay to the delayed clock signal to generate a unique delayed clock signal used to clock an output signal into the respective output buffer. By programming the delays based upon output skew, the output skew can be improved.