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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AD7616BSTZ датащи(PDF) 31 Page - Analog Devices |
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AD7616BSTZ датащи(HTML) 31 Page - Analog Devices |
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31 / 51 page  AD7616 Data Sheet Rev. 0 | Page 30 of 50 The CHSELx and HW_RNGSELx signals are not latched. The channel pair selected for conversion, or the hardware sequencer, can be reconfigured during normal operation by setting and maintaining the CHSELx signal level before the CONVST rising edge, and ensuring the signal level remains constant until after BUSY transitions low again. See the Channel Selection section for further details. In software mode, all additional functionality is configured by controlling the on-chip registers. PIN FUNCTION OVERVIEW There are several dual function pins on the AD7616. Their functionality is dependent on the mode of operation selected by the HW_RNGSELx pins. Table 12 outlines the pin functionality in the different modes of operation and interface modes. Figure 50. AD7616 Configuration at Reset Table 12. Pin Functionality Overview Pins Operation Mode Software, HW_RNGSELx = 00 Hardware, HW_RNGSELx ≠ 00 Serial, SER/PAR = 1 Parallel, SER/PAR = 0 Serial, SER/PAR = 1 Parallel, SER/PAR = 0 CHSELx No function, connect to DGND No function, connect to DGND CHSELx CHSELx SCLK/RD SCLK RD SCLK RD WR/BURST Connect to DGND WR BURST BURST DB15/OS0 to DB13/OS2 Connect to DGND DB15 to DB13 OSx DB15 to DB13 DB12/SDOA SDOA DB12 SDOA DB12 DB11/SDOB SDOB, leave floating for serial 1-wire mode DB11 SDOB DB11 DB10/SDI SDI DB10 Connect to DGND DB10 DB9 to DB6, DB3 to DB0 Connect to DGND DB9 to DB6, DB3 to DB0 Connect to DGND DB9 to DB6, DB3 to DB0 DB5/CRCEN Connect to DGND DB5 CRCEN DB5 DB4/SER1W SER1W DB4 SER1W DB4 HW_RNGSELx HW_RNGSELx, connect to DGND HW_RNGSELx, connect to DGND HW_RNGSELx, configure analog input range HW_RNGSELx, configure analog input range SEQEN No function, connect to DGND No function, connect to DGND SEQEN SEQEN REFSEL REFSEL REFSEL REFSEL REFSEL VCC VDRIVE RESET CONVST BUSY MODE RANGE SETTING IN HW MODE CHx y z ACQx CONVx ACQy CONVy tRESET_WAIT tDEVICE_SETUP tRESET_SETUP tRESET_HOLD ALL MODES HARDWARE MODE ONLY REFSEL SER/PAR, SER1W HW_RNGSEL0, HW_RNGSEL1 CRCEN, BURST SEQEN, OS0 TO OS2 CHSEL0 TO CHSEL2 ACTION |
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