參數(shù)資料
型號: HY5DU56422CT-D4
廠商: HYNIX SEMICONDUCTOR INC
元件分類: DRAM
英文描述: 256M-P DDR SDRAM
中文描述: 64M X 4 DDR DRAM, 0.65 ns, PDSO66
封裝: 0.400 X 0.875 INCH, 0.65 MM PITCH, TSOP2-66
文件頁數(shù): 32/34頁
文件大?。?/td> 248K
代理商: HY5DU56422CT-D4
Rev. 0.3 / Oct. 2003 32
HY5DU56422CT-D4/ D43
HY5DU56822CT-D4/ D43
HY5DU561622CT-D4/ D43
14. DQS, DM and DQ input slew rate is specified to prevent double clocking of data and preserve setup and hold times. Signal
transitions through the DC region must be monotonic.
15. tDAL = (tDPL / tCK ) + (tRP / tCK ). For each of the terms above, if not already an integer, round to the next highest integer.
tCK is equal to the actual system clock cycle time.
Example: For DDR400(D4) at CL=3 and tCK = 5.0 ns,
tDAL = (15 ns / 5.0 ns) + (18 ns / 5.0 ns) = (3.00) + (3.6)
Round up each non-integer to the next highest integer: = (3) + (4), tDAL = 7 clocks
16. For the parts which do not has internal RAS lockout circuit, Active to Read with Auto precharge delay should be
tRAS - (BL/2) x tCK.
17. tHZ and tLZ transitions occur in the same access time windows as valid data trasitions. These parameters are not referenced
to a specific voltage level but specify when the device output is no longer driving (HZ), or begins driving (LZ).
相關(guān)PDF資料
PDF描述
HY5DU56422CT-D43 256M-P DDR SDRAM
HY5DU56822CT-D 256M-P DDR SDRAM
HY5DU56822CT-D4 256M-P DDR SDRAM
HY5DU56822CT-D43 256M-P DDR SDRAM
HY5DU561622CT-D 256M-P DDR SDRAM
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