Abstract:
An integrated circuit comprising an input/output "I/O" cell (34; 36; 38; 40) arranged to drive an output signal and an activity analysis unit (24a; 24b; 24c) arranged to generate an activity factor based on the output signal. The activity factor represents a switching activity intensity of the I/O cell, the switching activity intensity is associated with an ageing effect of the I/O cell. The circuit further comprises a calibration unit (22) arranged to generate a switching pattern signal based on the generated activity factor and an I/O calibration cell (28; 30) arranged to be driven by the switching pattern signal, wherein the switching pattern signal emulates the ageing effect of the I/O cell.
Abstract:
A semiconductor device comprises a first input terminal; a second input terminal; an inverting amplifier circuit that comprises an input node connected to a first input terminal, an inverting input node connected to a second input terminal, and an output node connected to an output terminal, amplifies a difference between a first input signal supplied to the input node and a second input signal supplied to the second input terminal, and that outputs an output signal whose polarity is inverted from that of the first input signal to the output node; and a non-inverting amplifier circuit that comprises an input node connected to a second input terminal, an inverting input node connected to a first input terminal, and an output node connected to an output terminal, amplifies a difference between the first input signal and the second input signal, and that outputs an output signal whose polarity is the same as that of the first input signal to the output node.
Abstract:
To suppress power consumption and enhance signal quality as compared with the case where first and second semiconductor elements are terminated only by on-chip input termination resistor circuits. A first semiconductor element with a switching function and a second semiconductor element with a switching function are connected to each other with a substrate interconnection, and a resistor element is connected in parallel with the substrate interconnection. The resistor element is placed at an arbitrary position or a branch point on the signal interconnection.
Abstract:
A semiconductor device comprising (i) internal circuitry for outputting at least one internal clock signal and at least one internal data/control signal for transmission to a next device in a chain of semiconductor devices; (ii) data/control output circuitry for outputting at least one output data/control signal from the at least one internal data/control signal and for releasing the at least one output data/control signal towards the next device via at least one output data/control signal line, the at least one output data/control signal having a first dynamic range; and (iii) clock output circuitry for generating at least one output clock signal from the at least one internal clock signal and for releasing the at least one output clock signal towards the next device via at least one output clock signal line, the at least one output clock signal having a dynamic range different than the first dynamic range.
Abstract:
It is proposed a DRAM memory interface (40) for transmitting signals between a memory controller device (50) and a DRAM memory device (52). The DRAM memory interface comprises: data lines (44) for transmitting data signals; one or more control line(s) for transmitting control signals; one or more address line(s) for transmitting address signals; for each line, a transmitter device (41) connected to a first end of the line and a receiver device (42) connected to a second end of the line; wherein: each line is a single ended line wherein a signal transmitted on the line is referenced to a first reference voltage line (46); and - each line has an termination (Z 1 , Z 2 ) on both the first and second ends of the line by connecting a first impedance (Z 1 ) to the first end of the line and a second impedance (Z 2 ) to the second end of the line.
Abstract:
The semiconductor module includes a plurality of memory die on a first side of a substrate and a plurality of buffer die on a second side of the substrate. Each of the memory die is disposed opposite and electrically coupled to one of the buffer die.
Abstract:
The invention provides methods and apparatus. A NAND flash memory device receives command and address signals at a first frequency and a data signal at a second frequency that is greater than the first frequency.
Abstract:
An interconnect structure (200) includes a signal wire (210) and an' active shield line (220) adjacent to, but removed from, signal wire (210). Interconnect structure (200) also includes another active shield line (230) adjacent to, but removed from, signal wire (210). A signal driver (205) is connected to signal wire (210). Signal driver (205) drives a pulse on signal wire (210). A shield driver (225) is connected to active shield line (220). Shield driver (220) asserts a signal on active shield line (220) substantially simultaneous with the pulse. Another shield driver (235) is connected to another active shield line (230). Another shield driver (235) asserts a signal on another active shield line (230) substantially simultaneous with the pulse. The effect of the simultaneous signals on signal wire (210) and active shield lines (220, 230) is to effectively cancel the lateral capacitances between these lines.
Abstract:
An interconnect structure (200) includes a signal wire (210) and an' active shield line (220) adjacent to, but removed from, signal wire (210). Interconnect structure (200) also includes another active shield line (230) adjacent to, but removed from, signal wire (210). A signal driver (205) is connected to signal wire (210). Signal driver (205) drives a pulse on signal wire (210). A shield driver (225) is connected to active shield line (220). Shield driver (220) asserts a signal on active shield line (220) substantially simultaneous with the pulse. Another shield driver (235) is connected to another active shield line (230). Another shield driver (235) asserts a signal on another active shield line (230) substantially simultaneous with the pulse. The effect of the simultaneous signals on signal wire (210) and active shield lines (220, 230) is to effectively cancel the lateral capacitances between these lines.
Abstract:
An integrated circuit clock buffer is described which includes a pulser circuit having a delayed feedback to provide a pulsed signal in response to a transition in the external clock signal. The pulser circuit includes a delay element having an output node coupled to the input node of an inverter. The delay element and inverter are coupled between a first and second transistor. The buffer circuit generates non-skewed internal clock signals.