Provided are a semiconductor device and a method of forming the semiconductor device. The medical device monitors the AV interval and adjusts the Ventricular Pacing Protocol if the AV interval exceeds a threshold when the cardiac rate is elevated. A semiconductor memory device as a USB memory main body is constituted by them. Adjacent to the specific recording layers, dielectric layers 232a and 232b of InAl oxide layers containing at least either of In or Al as a main component are disposed.