§
Luxuse
Patent Intelligence
Sign In
Patent EP0578252A2 successfully refreshed from Google Patents.
← Back to Patent Explorer
EP0578252A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Semiconductor sensor device

Assignee: Denso Corp
•
Filing: 1993-07-08
•
Granted: —
•
Expires: 2013-07-08
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A semiconductor sensor device which has a decreased number of terminals, which is cheaply and compactly constructed and which contains a trimming circuit. A power source voltage and a clock signal having a voltage level greater than the power source voltage are input to a terminal 31. A logic circuit 22 starts operating at one voltage level of a terminal 33 and temporarily stores serial digital signals that are input through a terminal 32 in response to clock signals as parallel trimming data. A gauge circuit 11 operates based on the stored trimming data, and the gauge output is sent to the terminal 32. With another voltage level from the terminal 33, the logic circuit 22 trims a fuse memory circuit 23 based on the stored trimming data. At a further voltage level from the terminal 33, the gauge circuit 11 is operated based on the data in the fuse memory circuit 23 that is trimmed, and an output signal thereof is sent to the terminal 32.

Inventors

  • 👤 Toshio Ikuta
  • 👤 Tadashi Shibata

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-09 14:12
CPC Classifications
G; G01; G01L; G01L9/00; G01L9/02; G01L9/06; G01L27/00; G01L27/002; G01L27/005

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 211 words
A semiconductor sensor device comprising a semiconductor sensor contained in a chip; a first terminal which inputs into the chip an operation voltage for said semiconductor sensor; a second terminal which outputs out of the chip a sensor signal from said semiconductor sensor; a third terminal which introduces into the chip external voltages of a plurality of levels which are different from each other and are greater than that of said operation voltage; an auxiliary memory means which starts operating at a voltage level from any one of said three terminals and temporarily stores serial digital signals as parallel trimming data input through any one of said three terminals; an auxiliary measuring means which operates said semiconductor sensor at said one voltage level based on the trimming data stored in said auxiliary memory means and outputs the sensor signal to said second terminal; a trimming means which trims a main memory means with one voltage level of said third terminal based on the trimming data stored in said auxiliary memory means; and a main measuring means which operates said semiconductor sensor at another voltage level of said third terminal based on the data stored in said main memory means that is trimmed and outputs the sensor signal to said second terminal.
Claim 2
Dependent Claim 218 words
A semiconductor sensor device comprising a semiconductor sensor contained in a chip; a first terminal which inputs into the chip an operation voltage for said semiconductor sensor or serial digital signals greater than the operation voltage; a second terminal which outputs the sensor signal of said semiconductor sensor out of the chip or inputs the serial digital signals into the chip; a third terminal which introduces into the chip the external voltages of at least three kinds of voltage levels; an auxiliary memory means which starts operating with one of the voltage levels of said third terminal and temporarily stores serial digital signals input through any one of other remaining terminals as parallel trimming data; an auxiliary measuring means which operates said semiconductor sensor at said one voltage level based on the trimming data stored in said auxiliary memory means and outputs the sensor signal to said second terminal; a trimming means which trims a main memory means with another voltage level of said third terminal based on the trimming data stored in said auxiliary memory means; and a main measuring means which operates said semiconductor sensor at a further voltage level of said third terminal based on the data stored in said main memory means that is trimmed and outputs the sensor signal to said second terminal.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Maintenance schedule is calculated for granted US utility patents.

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag