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HYB25D128400AT Datasheet, PDF (65/79 Pages) Infineon Technologies AG – 128 Mbit Double Data Rate SDRAM
5
Timing Diagrams
HYB25D128[400/800/160]A-[6/7/8]
128Mbit Double Data Rate SDRAM
Timing Diagrams
DQS
DQ
DM
tDQSL
tDQSH
tDH
tDS
DI n
tDH
tDS
DI n = Data In for column n.
3 subsequent elements of data in are applied in programmed order following DI n.
Figure 37 Data Input (Write), Timing Burst Length = 4
Don’t Care
DQS
DQ
tDQSQ max
tQH
tQH (Data output hold time from DQS)
tDQSQ and tQH are only shown once and are shown referenced to different edges of DQS, only for clarify of illustration.
t.DQSQ and tQH both apply to each of the four relevant edges of DQS.
tDQSQ max. is used to determine the worst case setup time for controller data capture.
tQH is used to determine the worst case hold time for controller data capture.
Figure 38 Data Output (Read), Timing Burst Length = 4
Data Sheet
65
Rev. 1.06, 2004-01
09192003-LFQ1-R60G