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AD6620ASZ 数据表(PDF) 10 Page - Analog Devices |
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AD6620ASZ 数据表(HTML) 10 Page - Analog Devices |
10 / 44 page AD6620 –10– REV. A MICROPORT MODE1, READ Timing is synchronous to CLK; MODE = 1. DATA VALID tSC ADDRESS VALID N N+1 N+2 N+3 CLK1 R/W2 DS2 CS3 D[7:0] DTACK A[2:0] tSAM N+4 N tHC tDD tHC tZD tHA tDTACK tDTACK NOTES: 1 DTACK IS DRIVEN LOW ON THE RISING EDGE OF CLK "N+3" FOR INTERNAL ACCESS (A[2:0] = 000), CLK "N=2" OTHERWISE. 2 THE SIGNAL, R/W MAY REMAIN HIGH AND DS MAY REMAIN LOW TO CONTINUE READ MODE. 3 CS MUST RETURN TO HIGH STATE AND BE SAMPLED BY CLK (N+4 SHOWN) TO COMPLETE ACCESS AND FORCE DTACK HIGH. tSC tZR Figure 19. MODE1 Read Timing Requirements and Switching Characteristics MICROPORT MODE1, WRITE Timing is synchronous to CLK; MODE = 1. tSC N N+1 N+2 N+3 tSAM N* tDTACK tSC CLK1 R/W2 DS2 CS3 D[7:0] DTACK A[2:0] tHC tHC tDTACK tSAM tHM tHA NOTES: 1 ON RISING EDGE OF "N+3" CLK, DTACK IS DRIVEN LOW. 2 THESE SIGNALS (R/W AND DS) MAY REMAIN IN LOW STATE TO CONTINUE WRITING DATA. 3 CS MUST RETURN TO HIGH STATE AND BE SAMPLED BY CLK (N+3 SHOWN) TO COMPLETE WRITE AND FORCE DTACK HIGH. * THE NEXT WRITE MAY BE INITIATED ON CLK, N*. DATA VALID ADDRESS VALID Figure 20. MODE1 Write Timing Requirements and Switching Characteristics |
类似零件编号 - AD6620ASZ |
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类似说明 - AD6620ASZ |
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