Tiny AVR emulates Dallas DS2450 1-Wire Quad A/D Converter
Vladimir I. Yershov
Chloride Rus, Moscow, Russia
Abstract
This article describes basic approach to building 1-wire slave devices by uC emulation on example of DS2450 1-Wire Quad A/D Converter. Besides lower cost, emulated device allows to get more precision that the prototype and more flexibility by adding various extra software options. Also, 12 bit ADC conversion was realized by oversampling technique.
*** During the development no one Tiny was suffered or burned out.
The idea to replace standard DS2450 [1] came during the development battery monitoring system, when it became obvious that declared precision of the DS2450 does not exceed 8 bits.
