公开(公告)号：EP1145123A2

公开(公告)日：2001-10-17

申请号：EP00913584.9

申请日：2000-02-23

Applicant: MICROCHIP TECHNOLOGY INC.

Inventor： SMIT, Willem ,  HOFHINE, Paul ,  ROGERS, Clark

IPC: G06F11/00

CPC classification number: H01L23/544 ,  H01L2223/5444 ,  H01L2223/54473 ,  H01L2924/0002 ,  H01L2924/00

Abstract: An integrated circuit having a microcontroller, mask programmed read only memory, functions such as clock oscillator, analog-to-digital converter, timers, etc., where each may be adjusted with a digital input to a desired calibration value. The digital input resulting in the desired calibration value being stored in a programmable fuse array.

公开(公告)号：EP0985266B1

公开(公告)日：2001-12-19

申请号：EP99912935.6

申请日：1999-03-24

Applicant: MICROCHIP TECHNOLOGY INC.

Inventor： BRUWER, Frederick ,  SMIT, Willem

IPC: H03B5/20

CPC classification number: H03B5/20 ,  H03B2201/02 ,  H03B2201/025 ,  H03B2201/0266 ,  H03J2200/10 ,  Y10T307/826

Abstract: A transmitter system comprises an oscillator and having an adjustable monolithic capacitor circuit used for frequency stabilization. The oscillator signal is modulated and transmitted. A data generating chip is coupled to the transmitter. The data generating chip is used for adjusting and controlling the transmitter oscillator frequency signal. The adjustable capacitor circuit is located internal to the data generating chip and is coupled to a ground pin and one of a plurality of function pins on the data generating chip. The adjustable capacitor circuit is used for adjusting and setting the centerpoint of the transmitter oscillator frequency signal.

公开(公告)号：EP0985266A1

公开(公告)日：2000-03-15

申请号：EP99912935.6

申请日：1999-03-24

Applicant: MICROCHIP TECHNOLOGY INC.

Inventor： BRUWER, Frederick ,  SMIT, Willem

IPC: H03B5/20

CPC classification number: H03B5/20 ,  H03B2201/02 ,  H03B2201/025 ,  H03B2201/0266 ,  H03J2200/10 ,  Y10T307/826

Abstract: A transmitter system comprises an oscillator and having an adjustable monolithic capacitor circuit used for frequency stabilization. The oscillator signal is modulated and transmitted. A data generating chip is coupled to the transmitter. The data generating chip is used for adjusting and controlling the transmitter oscillator frequency signal. The adjustable capacitor circuit is located internal to the data generating chip and is coupled to a ground pin and one of a plurality of function pins on the data generating chip. The adjustable capacitor circuit is used for adjusting and setting the centerpoint of the transmitter oscillator frequency signal.

公开(公告)号：EP1145123A3

公开(公告)日：2002-09-11

申请号：EP00913584.9

申请日：2000-02-23

Applicant: MICROCHIP TECHNOLOGY INC.

Inventor： SMIT, Willem ,  HOFHINE, Paul ,  ROGERS, Clark

IPC: G06F11/00

CPC classification number: H01L23/544 ,  H01L2223/5444 ,  H01L2223/54473 ,  H01L2924/0002 ,  H01L2924/00

Abstract: An integrated circuit having a microcontroller, mask programmed read only memory, functions such as clock oscillator, analog-to-digital converter, timers, etc., where each may be adjusted with a digital input to a desired calibration value. The digital input resulting in the desired calibration value being stored in a programmable fuse array.

公开(公告)号：EP0995166A1

公开(公告)日：2000-04-26

申请号：EP99921714.4

申请日：1999-05-06

Applicant: MICROCHIP TECHNOLOGY INC.

Inventor： BRUWER, Frederick, J. ,  SMIT, Willem ,  VAN NIEKERK, Johannes, A.

IPC: G06K7/00

CPC classification number: G06K19/0701 ,  G06K19/0723 ,  G07C9/00309 ,  G07C2009/00603 ,  G07C2009/00777 ,  G07C2009/00793

Abstract: A wireless security system combines encoded RF and encoded magnetic field operation into a base unit device and a remote unit device, overcoming the limitations of RF only or magnetic field only wireless security devices. The base unit is comprised of a power supply, a base processing unit, an RF receiver and a base inductor-capacitor (LC) transceiver. The base processing unit is capable of controlling both encoded RF and encoded magnetic field operation. The remote unit is comprised of a battery, a remote processing unit, an RF transmitter, a remote magnetic field converter circuit, manual control and an energy storage device. The remote processing unit, which is capable of controlling both encoded RF and encoded magnetic field operation, is implemented on a single, monolithic integrated circuit. The remote unit device can be miniaturized to relative smallness to the extent that it can be embedded, for example, within an automobile key. The remote unit device can convert magnetic field energy to DC electrical energy for the purposes of supplying power to the remote unit device, conserving battery power and re-charging the battery.