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AD6622PCB Datasheet(PDF) 5 Page - Analog Devices |
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AD6622PCB Datasheet(HTML) 5 Page - Analog Devices |
5 / 28 page AD6622 –5– REV. 0 WR (R/W) RD (DS) CS A[2:0] D[7:0] RDY ( DTACK) tHWR tSAM tHAM tSAM tHAM tDRDY tACC VALID ADDRESS VALID DATA 1. tACC ACCESS TIME DEPENDS ON THE ADDRESS ACCESSED. ACCESS TIME IS MEASURED FROM THE FE OF WR TO THE RE OF RDY. 2. tACCFAST REQUIRES A MAXIMUM OF THREE CLK PERIODS AND APPLIES TO A[2:0] = 7, 6, 5, 3, 2, 1 3. tACCMEDIUM REQUIRES A MAXIMUM OF FOUR CLK PERIODS AND APPLIES TO A[2:0] = 4 AND 0 IF THE ACCESS IS TO A CONTROL REGISTER VERSUS A RAM REGISTER. 4. tACCSLOW REQUIRES A MAXIMUM OF FIVE CLK PERIODS AND APPLIES TO A[2:0] = 0 WHEN ACCESSING RAM REGISTERS. Figure 5. INM Microport Write Timing Requirements WR (R/W) RD (DS) CS A[2:0] D[7:0] RDY ( DTACK) tSAM tACC VALID ADDRESS tZD tDRDY VALID DATA tDD tHA tZD 1. tACC ACCESS TIME DEPENDS ON THE ADDRESS ACCESSED. ACCESS TIME IS MEASURED FROM THE FE OF WR TO THE RE OF RDY. 2. tACCFAST REQUIRES A MAXIMUM OF THREE CLK PERIODS AND APPLIES TO A[2:0] = 7, 6, 5, 3, 2, 1 3. tACCMEDIUM REQUIRES A MAXIMUM OF FOUR CLK PERIODS AND APPLIES TO A[2:0] = 4 AND 0 IF THE ACCESS IS TO A CONTROL REGISTER VERSUS A RAM REGISTER. 4. tACCSLOW REQUIRES A MAXIMUM OF FIVE CLK PERIODS AND APPLIES TO A[2:0] = 0 WHEN ACCESSING RAM REGISTERS. Figure 6. INM Microport Read Timing Requirements |
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