The interface circuit of the AD7714 and MCS-51 series single-chip microcomputer

Published:2011/7/8 4:35:00 Author:Christina | Keyword: interface circuit, single-chip microcomputer | From:SeekIC

The 3-wire interface of the AD7714 can be equipped with a variety kinds of microcontrollers (contains the microcontroller or the microprocessor). The 3-wire serial interface can be used in the isolation system, and it can reduce the number of the optical coupler to minimum. The interface circuit of the AD7714 and 80C51 (or the 87C51, 89C51) is as shown in the figure. The 80C51 only use two interface leads (P3.0，P3.1). At this time, the non-bit DRDY of the monitoring configuration register can be used to determine the update time of the data register.



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