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MCP3901 датащи(PDF) 38 Page - Microchip Technology |
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MCP3901 датащи(HTML) 38 Page - Microchip Technology |
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38 / 60 page ![]() MCP3901 DS22192A-page 38 © 2009 Microchip Technology Inc. 6.10.2 DR PULSES WITH SHUTDOWN OR RESET CONDITIONS There will be no DR pulses if DRMODE<1:0>=00 when either one or both of the ADCs are in reset or shutdown. In Mode 00, a DR pulse only happens when both ADCs are ready. Any DR pulse will correspond to one data on both ADCs. The two ADCs are linked together and act as if there was only on channel with the combined data of both ADCs. This mode is very practical when both ADC channel data retrieval and processing need to be synchronized, as in power metering applications. Figure 6-8 represents the behavior of the data ready pin with the different DRMODE and DR_LTY configura- tions, while shutdown or resets are applied. Note: If DRMODE<1:0>=11, the user will still be able to retrieve the DR pulse for the ADC not in shutdown or reset, i.e. only 1 ADC channel needs to be awake. |
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