公开(公告)号：DE602006009447D1

公开(公告)日：2009-11-12

申请号：DE602006009447

申请日：2006-07-12

Applicant: ST MICROELECTRONICS SA

Inventor： DUVAL BENJAMIN ,  POMET ALAIN

IPC: G06F13/40

Abstract: The peripheral has an interface circuit with a detection circuit (DCT) detecting the presence or absence of pull-down resistors of a master device (H) e.g. computer. The circuit (DCT) is connected to positive and negative data terminals (D+, D-) of a universal serial bus (USB) port of the peripheral. The peripheral establishes a communication with the device (H) via the port, if the circuit (DCT) detects the resistors. The circuit (DCT) verifies if voltages applied to the data terminals exceed 0.8 volts, if DC voltages (Vg+, Vg-, Vg) provided by a generator (VGEN) is less than 0.8 volts.

公开(公告)号：FR2844118B1

公开(公告)日：2005-02-18

申请号：FR0210702

申请日：2002-08-29

Applicant: ST MICROELECTRONICS SA

Inventor： DUVAL BENJAMIN ,  MARINET FABRICE

IPC: H03K17/22

公开(公告)号：FR2829248B1

公开(公告)日：2004-08-27

申请号：FR0111356

申请日：2001-09-03

Applicant: ST MICROELECTRONICS SA

Inventor： DUVAL BENJAMIN

IPC: G05F3/24 ,  G05F3/26

Abstract: A current generator for the production of a reference current includes a first P type transistor, a source of which is connected to a first pole of a resistor and a gate of which is connected to a second pole of the resistor. The reference current flows in the resistor with a value that is a function of a threshold voltage of the first transistor. The current generator further includes a second N type transistor whose drain, gate and source are connected respectively to the second pole of the resistor, the first pole of the resistor and the drain of the first resistor. The second transistor is configured to operate in saturation mode.

公开(公告)号：FR2834064A1

公开(公告)日：2003-06-27

申请号：FR0116765

申请日：2001-12-21

Applicant: ST MICROELECTRONICS SA

Inventor： MARINET FABRICE ,  DUVAL BENJAMIN

IPC: G01K3/00 ,  G01K15/00 ,  G01K13/00 ,  G01K7/00 ,  G01R31/28

Abstract: Integrated circuit temperature sensor (21) delivers output signals (S1, S2) from means (MC1, CP1; MC1, CP2) for detection of the exceeding of two temperature thresholds. Additional means (MC1, MX1, CP1; MC1, MX2, CP2) are provided for detecting a third and fourth temperature threshold linked to the first and second temperature thresholds respectively such that a deviation in the first or second threshold detection causes a change in the third or fourth. The invention also relates to a corresponding method.