| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a semiconductor device that allows trimming terminal resistors and improving the characteristics of an ODT circuit, and to provide a method of trimming the same.SOLUTION: First, second, and third termination circuits 12, 13, and 14 are connected to an external connection terminal 11. At least the first termination circuit 12 includes first and second resistors R1 and R2 connected in parallel to the external connection terminal 11, a plurality of first-conductivity-type first transistors P1 to P4, and a plurality of second-conductivity-type second transistors N1 to N4. When the variation range of the first and second resistors R1 and R2 is within a first range, only the first termination circuit 12 is driven, and when the variation range of the first and second resistors is within a second range, the first and second termination circuits 12 and 13 are driven.</p> |
