Peripheral special function register with soft-reset disable

摘要

A microcontroller has a plurality of peripherals, and at least one control bit, wherein the control bit controls a reset of at least one peripheral such that in a first mode any type of reset resets the at least one peripheral of said plurality of peripherals and in a second mode only a power supply reset resets the at least one peripheral.

主权项

1. A microcontroller comprising a plurality of peripherals wherein one of the peripherals is a digital to analog converter having an output coupled with an external pin of the microcontroller,
wherein the microcontroller is operable to be reset by a power supply reset and wherein the microcontroller is further operable to generate an internally generated reset signal, and wherein the digital to analog converter is configurable through a configuration register comprising at least one control bit, wherein the control bit controls an operating mode of the digital to analog converter such that in a first operating mode, both the power supply reset signal and the internally generated reset signal reset the digital to analog converter and in a second operating mode only a power supply reset resets the digital to analog converter and wherein the digital to analog converter maintains an output voltage programmed though an associated special function register at the external pin.