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    CIRCUIT STRUCTURE OF SHARED REGISTER AND ITS DATA TRANSMISSION METHOD
    171.
    发明专利
    CIRCUIT STRUCTURE OF SHARED REGISTER AND ITS DATA TRANSMISSION METHOD 失效

    公开(公告)号：JPH0773140A

    公开(公告)日：1995-03-17

    申请号：JP5280994

    申请日：1994-02-25

    Applicant: ST MICROELECTRONICS SRL

    Inventor： ALINI ROBERTO ,  MOLONEY DAVID ,  GORNATI SILVANO ,  PORTALURI SALVATORE

    IPC: G06F13/38 ,  G11C5/00

    Abstract: PURPOSE: To reduce the integration area and to accelerate the processing concerning a structure provided with a serial type interface for connection to a data transmission line, by connecting a part of a register to the bundled line and transmitting both a register address and data. CONSTITUTION: A decoded address latch 5 stores the output state of an address decoder 4 until the other address is transmitted through a multiplex bus 2. Only when this address is the address of a designated data register 1, according to the output of this latch 5, data transmitted after this address are written in this register. A write line 9 transmits a data write signal through a logic gate 7 of AND type. A data read circuit means 3 reads data out of this register 1 so as to repeat data from the multiplex bus 2. Only when the transmitted address is as prescribed, a read command starts reading from this register 1.

    ELECTRONIC CIRCUIT
    172.
    发明专利
    ELECTRONIC CIRCUIT 失效

    公开(公告)号：JPH0772270A

    公开(公告)日：1995-03-17

    申请号：JP1033094

    申请日：1994-02-01

    Applicant: ST MICROELECTRONICS SRL ,  MARELLI AUTRONICA

    Inventor： LOMBRESCHI GIAMPAOLO ,  BRAMBILLA MASSIMILIANO

    IPC: G04C3/14 ,  H02P8/02

    Abstract: PURPOSE: To provide a circuit capable of generating control pulse trains in various operating conditions by using one specified bit counter for both of a normally operating condition and a one-operation time reset condition. CONSTITUTION: An input part receives three types of signals, a signal CLOCK, a signal RESET and a signal PULSE. The signal CLOCK is input to a frequency: division 4 to generate two frequency signals. A counter: 50M2 is provided with a counter 2A to generate a signal SX with the second frequency, which is a quick clock time reset pulse basic signal SX with high and low logic conditions. A multiplexer MUX 3 selectively sends both of a quick time reset signal SX and a slow time reset signal SN as the functions of a signal SECS to an output part S1 or S2 in a circuit. A counter: 11 bit 1 receives the signal PULSE, the signal RESET, the signal QSX and the first frequency signal to selectively control the reversion of a current in a clock motor.

    SEMICONDUCTOR MEMORY
    175.
    发明专利
    SEMICONDUCTOR MEMORY 失效

    公开(公告)号：JPH06325592A

    公开(公告)日：1994-11-25

    申请号：JP5878794

    申请日：1994-03-29

    Applicant: ST MICROELECTRONICS SRL

    Inventor： OLIVO MARCO ,  PASCUCCI LUIGI

    IPC: G11C29/00 ,  G11C11/00 ,  G11C29/04

    Abstract: PURPOSE: To unnecessitate a specified load circuit to program cells in a redundancy row by positioning at an intersection a line and a row of matrix itself and providing matrix consisting of memory cells. CONSTITUTION: A load circuit 3 for programming is connected to a common drain of transistors MS and MSR of each bucket 1. The circuit 3 consists of P channel MOS type transistor MP1, its drain is connected to the common drain of the transistors MS and MSR, its source is connected to programming voltage VP and its gate is connected to an input of a circuit 4 which has a NAND logic function. The circuit 4 is provided with a P channel MOS type load transistor M41, its source and drain are respectively connected to the voltage VP and a gate of the MP1 and make them ground electric potential. A drain of a transistor M42 is connected to a drain of the transistor M41, a drain of a transistor M43 is connected to its source, the source is ground electric potential and signals YMO to YM7 are given here. Thus, a signal DIN to program is acquired.

    TELEPHONE SUBSCRIBER DEVICE
    176.
    发明专利
    TELEPHONE SUBSCRIBER DEVICE 失效

    公开(公告)号：JPH06303290A

    公开(公告)日：1994-10-28

    申请号：JP33163093

    申请日：1993-12-27

    Applicant: ST MICROELECTRONICS SRL

    Inventor： CONSIGLIO PIETRO ,  ANTONINI CARLO ,  VANALLI GIANPIETRO

    IPC: H04M1/00 ,  H04M1/60 ,  H04M1/738

    Abstract: PURPOSE: To provide a device having a monolithically integrated line switch by providing a circuit interface which drives a pair of switches and providing the circuit interface with a unidirectional current pass circuit element which controls a driving current generated internally. CONSTITUTION: An input terminal E for application of an external electric signal related to a circuit node G and a circuit interface means CI which has output terminals to drive switches SW2 and SW3 through an actuator circuit ACT are provided. In the circuit interface CI, a unidirectional current circuit element like a diode D1 is connected in parallel with the switch SW3 between a terminal 36 of a bridge circuit PP and a circuit node G. That is, the switch SW3 can be operated by the diode D1 provided between the bridge circuit PP and a substrate. Consequently, the driving current generated in the circuit interface means CI by the external electric signal goes to the substrate through the diode in any polarity state.

    SATURATION CONTROL OF INTEGRATED BIPOLAR TRANSISTOR
    178.
    发明专利
    SATURATION CONTROL OF INTEGRATED BIPOLAR TRANSISTOR 失效

    公开(公告)号：JPH06236890A

    公开(公告)日：1994-08-23

    申请号：JP20718493

    申请日：1993-07-28

    Applicant: ST MICROELECTRONICS SRL

    Inventor： POLETTO VANNI ,  MORELLI MARCO

    IPC: H01L29/73 ,  G05F1/569 ,  H01L21/331 ,  H03K17/0422

    Abstract: PURPOSE: To provide a method for easily adjusting saturation, unrelated to the layout of a power transistor, unlike the known anti-saturation system, in which an actually generated substrate current is traced by the operation of the transistor in the saturation region, in place of tracing the generation of direct bias of collector/base junction for the power transistor as an index of saturation condition of the transistor. CONSTITUTION: A sensing resistor RS is connected in the path to limit a current IS, which is injected to a substrate from a saturation transistor T1 . A first signal, indicating saturation condition of the transistor, is detected and this signal is compared with a reference voltage VS. When the signal becomes higher than the threshold, a base current IB is reduced.

    RC FILTER FOR LOW-FREQUENCY AND EXTREMELY LOW-FREQUENCY APPLICATION DEVICES
    180.
    发明专利
    RC FILTER FOR LOW-FREQUENCY AND EXTREMELY LOW-FREQUENCY APPLICATION DEVICES 失效

    公开(公告)号：JPH06224689A

    公开(公告)日：1994-08-12

    申请号：JP18823293

    申请日：1993-07-29

    Applicant: ST MICROELECTRONICS SRL

    Inventor： TOMASINI LUCIANO ,  CASTELLO RINALDO

    IPC: H03F1/34 ,  H03H7/06 ,  H03H11/04 ,  H03H11/12 ,  H04M1/00

    Abstract: PURPOSE: To provide an inexpensive high-accuracy RC filter having structural and operational features suitable for integrated circuits requiring very large time constants. CONSTITUTION: An RC filter 1 is provided with a resistor R connected between the input Vin and output Vout of the filter and an amplifier 5 which is connected behind the resistor R and the output of which is fed back to its input through a capacitor. By using such a simple device, a filter having a large time constant while using small-sized components occupying small spaces in an integrated circuit can be manufactured by utilizing the already known mirror effect.

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