Patent ID: 9183933
Filing Date: 2015-11-10
Classification: G11C,H01L

Abstract:
1. A cell structure comprising: a first p-doped well in a substrate; a second p-doped well in the substrate; a first n-doped well in the substrate and disposed between the first p-doped well and the second p-doped well; a first group of transistors, respective first ones of the first group of transistors forming a first latch, respective second ones of the first group of transistors forming a second latch, the first group of transistors having respective active areas in the first p-doped well in the substrate, the first n-doped well in the substrate, or the second p-doped well in the substrate; a second group of transistors forming a cascaded device electrically coupled to the first latch and the second latch, the second group of transistors having an active area in the second p-doped well in the substrate; and a well strap structure comprising an active area electrically coupled to a power node or a ground node.