Patent ID: 9240785
Filing Date: 2016-01-19
CPC Classification: H03K

Claim Text:
1. An microcontroller, comprising: a plurality of external input/output connection; a digital processor; a memory coupled to the digital processor; and at least one analog signal compatible complementary metal oxide semiconductor (CMOS) switch coupled to and controlled by the digital processor, and configured to switch signals through a first and a second external input/output connection of said plurality of external input/output connections, wherein the at least one analog signal compatible CMOS switch comprises a first switching node coupled with the first external input/output connection of said plurality of external input/output connections and a second switching node coupled with the second external input/output connection of said plurality of external input/output connections, and wherein the at least one analog signal compatible CMOS switch provides a low impedance between the first external input/output connection and the second external input/output connection when the digital processor asserts a control signal at a first logic level thereto, and a high impedance between the first external input/output connection and the second external input/output connection when the digital processor asserts the control signal at a second logic level thereto.