公开(公告)号：JPH10242290A

公开(公告)日：1998-09-11

申请号：JP35462297

申请日：1997-12-24

Applicant: ST MICROELECTRON INC

Inventor： BLANCHARD RICHARD A ,  CONFALONIERI PIERANGELO

IPC: H01L27/04 ,  G11C5/00 ,  H01L21/82 ,  H01L21/822 ,  H01L27/02 ,  H01L27/07 ,  H01L29/861 ,  H03K19/0948 ,  H03K19/173

Abstract: PROBLEM TO BE SOLVED: To select one of design options by forming semiconductor layers on a substrate, forming a set of integrated circuit components therein, and selecting one of many modes in response to a signal. SOLUTION: An integrated circuit 10 has a selector 11 and circuit unit 12 which has two series connected resistors R1, R2 and electronic switch SW which is connected in parallel to the resistor R1 and has a control terminal 13. Two different operation states provide two different resistance values of the resistor between terminals 14, 15 of the unit 12. The selector 11 has an inverter 16 having an output terminal 17 connected to the control terminal 3 of the switch SW and input terminal 18 connected to one Vdd.