Abstract: Disclosed are a method and a device for detecting a short circuit between adjacent micro-bumps. The method includes setting outputs of a pull-up driver and a pull-down driver of a data output circuit connected with a micro-bump to be suitable for a test type and determining whether a short circuit is generated.

Abstract: A memory module includes a first memory device including a first one-die termination circuit for impedance matching of a signal path and a second memory device sharing the signal path with the first memory device and including a second on-die termination circuit for impedance matching of the signal path, wherein the signal path corresponds to a command or address signal path provided from a host, and the first and second on-die termination circuits are individually controlled according to control of the host.

Abstract: Provided are a reference voltage training device and a method thereof. The reference voltage training device includes a comparator configured to compare a toggle signal with a reference voltage and output a comparison signal, a duty cycle detector configured to check a duty ratio of the comparison signal, and a reference voltage level changing unit configured to fix the reference voltage when the duty ratio meets a predetermined condition and to change a level of the reference voltage when the duty ratio does not meet the predetermined condition. The comparator outputs a changed comparison signal using the changed reference voltage.

Abstract: A semiconductor device may include a termination resistor circuit including a first termination resistor connected to a power voltage and a second termination resistor between the first termination resistor and a ground, a value of the first termination resistor and the second termination resistor changes based on a feedback signal; a mismatch detector may generate a compared result based on a potential difference between a voltage of a center node, between the first and second termination resistors, and a reference voltage; a code generator may generate the feedback signal based on the compared result, and generate a feedback code based on the compared result; a code register may generate a mismatch code controlling a mismatch between the first and second termination resistors based on the feedback code; and a corrector may compensate for the mismatch between the first and second termination resistors based on the mismatch code.