Title:
SEMICONDUCTOR DEVICE AND SEMICONDUCTOR DEVICE IDENTIFICATION METHOD
Document Type and Number:
WIPO Patent Application WO/2019/176774
Kind Code:
A1
Abstract:
This semiconductor device 1a comprises: a first external terminal 31 to which a first voltage is applied, a second external terminal 32 to which a second voltage is applied, a third external terminal 33, first wiring 17 connected to the first external terminal 31, second wiring 18 connected to the second external terminal 32, an internal block circuit 11 connected to the first wiring 17, a first resistor 12 and transistor 14 connected in series between the first wiring 17 and second wiring 18, and a second resistor 13 connected between the first wiring 17 and second wiring 18. The transistor 14 turns on and off in response to a test signal supplied from the third external terminal 33. This configuration makes it possible to identify a product from a resistance value even if changing from a prescribed resistance value is not possible.
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Inventors:
MATSUMOTO NAOKI (JP)
Application Number:
PCT/JP2019/009343
Publication Date:
September 19, 2019
Filing Date:
March 08, 2019
Export Citation:
Assignee:
ROHM CO LTD (JP)
International Classes:
G01R31/28; G01R31/26; H01L21/822; H01L27/04; H01L27/06
Foreign References:
| JP2013108786A | 2013-06-06 | |||
| JPS60107852A | 1985-06-13 | |||
| JPS58176966A | 1983-10-17 | |||
| JPH11109002A | 1999-04-23 | |||
| JP2010171369A | 2010-08-05 | |||
| JPH09101347A | 1997-04-15 | |||
| JP2002368110A | 2002-12-20 |
Attorney, Agent or Firm:
YOSHIDA Minoru et al. (JP)
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