Abstract:
A memory cell comprises a first and a second inverters connected in a latch configuration. The inverters have respective first and second means for receiving a first and a second voltage supplies, respectively. The cell also comprises means, responsive to a memory cell selection signal, for selectively connecting an input of at least one of the first and second inverter to at least one respective input/output data line, carrying an input datum to be written in the memory cell in a memory cell write operation and an output datum read from the memory cell in a memory cell read operation. For-flash-clearing the memory cell, means are provided for switching at least one of the first and second voltage supply receiving means of at least one of the first and second inverters between the first voltage supply and the second voltage supply. The memory cell is particularly adapted to implement a flash-clear function in a memory device.
Abstract:
An integrated device including a first memory array having first memory cells of a nonvolatile type and a second memory array having second memory cells of a volatile type (DRAM). The first memory cells and the second memory cells are formed in a substrate of semiconductor material, and each includes a respective MOS transistor which is formed in an active region of the substrate and has a first conductive region and a respective capacitor which is formed on top of the active region and has a first electrode and a second electrode, which are separated by a dielectric region. Moreover, the first electrode of the capacitor is connected to the first conductive region of the MOS transistor. The first and the second memory cells have a structure that is substantially the same and are formed simultaneously.
Abstract:
The charge pump uses PMOS transistors for implementing the first and the second charge transfer switches of the charge pump. Substantially, the closing and opening of the first switch through which the first capacitor is charged, of the second switch for transferring the electric charge from the first capacitor to the load capacitance connected to the output node of the circuit and of the third switch for discharging to ground the load capacitance, are driven by a logic NOR gate. A first input of the NOR gate is connected to a common control node of the PMOS transistor forming the second switch and of a NMOS transistor forming the third switch, a second inverting input is connected to the output node, and the output is connected to the first capacitor.
Abstract:
A method and program-load circuit is for regulating the voltages at the drain and body terminals of a non-volatile memory cell being programmed. These voltages are applied from a program-load circuit connected in a conduction pattern to transfer a predetermined voltage value to at least one terminal of the memory cell. The method includes a step of regulating the voltage value locally, within the program-load circuit, to overcome the effect of a parasitic resistor present in the conduction pattern.
Abstract:
A circuit for controlling a reference node in a sense amplifier switchable between an operating mode and a stand-by mode is provided. The reference node provides a reference voltage in the operating mode. The circuit may include circuitry for bringing the reference node to a starting voltage upon entry into the stand-by mode, circuitry for keeping the reference node at a pre-charging voltage in the stand-by mode, and circuitry for providing a comparison voltage closer to the pre-charging voltage than the starting voltage. Pulling circuitry may also be included for pulling the reference node toward a power supply voltage. Further, a controller may activate the pulling circuitry upon entering the stand-by mode, and disable the pulling circuitry when the voltage at the reference node reaches the comparison voltage.
Abstract:
A metal oxide semiconductor transistor integrated in a wafer of semiconductor material includes a gate structure located on a surface of the wafer and includes a gate oxide layer. The gate oxide layer includes a first portion having a first thickness and a second portion having a second thickness differing from the first thickness.
Abstract:
Integrated circuit including a power component with vertical current flow and at least one low or medium voltage component, the at least one low or medium voltage component formed in a first semiconductor layer separated from a second semiconductor layer by an insulating material layer. The power component with vertical current flow is formed in the second semiconductor layer, and excavations are formed in the insulating material layer which extend from a free surface of the first semiconductor layer to the second semiconductor layer, said excavations having lateral walls of insulating material and being filled up with a conductor material in order to electrically contact active regions of the power component in the second semiconductor layer by electrodes placed on the free surface of the first semiconductor layer.
Abstract:
A synchronous rectifier circuit operates as a high-efficiency DC/DC converter for mixed step-up/step-down applications, and includes an input terminal receiving a voltage signal, a second input terminal node connected to an external inductor, and an output terminal. A power switch may be connected between the second input terminal node and the output terminal to generate on its output a voltage at one terminal of the inductor. A driver circuit is provided for driving the power switch, and a comparator senses the potential difference between the output and input terminals and produces an enable signal for the driver circuit. The comparator may be a wide pass-band comparator forcing prompt triggering of the regulation loop in the rectifier.
Abstract:
A system provides two distinct solutions for encoding and decoding servo positioning data for a hard disk drive. A first solution includes: encoding each group of four bits of a pattern signal in a Matched Spectral Null (MSN) format through an intermediate rate {fraction (4/6)} code; providing a duplicated bit for each bit of the six bit code word obtained with the previous step. A second solution includes: encoding each group of four bit of the pattern signal adding a parity check bit as an intermediate rate null code; encoding each of the five bits using the biphase map. Both solutions include subsequently: reading a servo wedge information signal using a read and write channel of the hard disk drive; and using a trellis Partial Response decoding scheme matched to said encoded word for obtaining angular and radial information for the head positioning.
Abstract:
A process for forming a final passivation layer over an integrated circuit comprises a step of forming, over a surface of the integrated circuit, a protective film by means of High-Density Plasma Chemical Vapor Deposition.