Internet Data Sheet
HY[B/I]18T256[40/80/16]0A[C/F](L)
256-Mbit Double-Data-Rate-Two SDRAM
FIGURE 8
Method for Calculating Transitions and Endpoint
ꢐꢑꢁꢇꢒꢇ ꢇꢓꢐ
ꢐꢆꢆꢇꢕꢇꢏ ꢇꢓꢐ
ꢐꢆꢆꢇꢕꢇ ꢇꢓꢐ
ꢀꢔꢂ
ꢐꢑꢁꢇꢒꢇꢏ ꢇꢓꢐ
ꢀꢁꢂ
ꢀꢃꢄꢃꢖꢇ
ꢀꢃꢄꢅꢆꢇꢈꢉꢊꢇꢋꢌꢍꢉꢀ
ꢗꢈꢘꢍꢉꢇꢋꢌꢍꢉꢀ
ꢐꢑꢔꢇꢕꢇꢏ ꢇꢓꢐ
ꢐꢑꢔꢇꢕꢇ ꢇꢓꢐ
ꢐꢆꢆꢇꢒꢇ ꢇꢓꢐ
ꢐꢆꢆꢇꢒꢇꢏ ꢇꢓꢐ
ꢆꢎ
ꢆꢏ
ꢆꢎ
ꢆꢏ
ꢀꢁꢂꢙꢀꢃꢄꢅꢆꢇ
ꢈꢉꢊꢇꢋꢌꢍꢉꢀꢇꢚꢇꢏꢛꢆꢎꢒꢆꢏ
ꢀꢔꢂꢙꢀꢃꢄꢃꢖꢇ
ꢗꢈꢘꢍꢉꢇꢋꢌꢍꢉꢀꢇꢚꢇꢏꢛꢆꢎꢒꢆꢏ
ꢜꢄꢖꢆꢝꢞꢎꢝ
FIGURE 9
Differential Input Waveform Timing - tDS and tDH
'46
'46
W'6
W'6
W'+
W'+
9''4
'4
9,+ꢍ$&ꢍ0,1
9,+ꢍ'&ꢍ0,1
95()
9,/ꢍ'&ꢍ0$;
9,/ꢍ$&ꢍ0$;
966
03(7ꢁꢅꢅꢃ
Rev. 1.50, 2007-12
48
03062006-7M17-PXBC
QIMONDA [ QIMONDA AG ]
