W'+ꢌ
W'6ꢌ
ꢌ
9,ꢌ+ꢎDFꢏꢌꢌPLQ
9,ꢌ+ꢎGFꢏꢌꢌPLQ
95ꢌ ()ꢎGFꢏꢌ
ꢌ
ꢌ
9,ꢌ/ꢎGFꢏꢌꢌPD[
9,ꢌ/ꢎDFꢏꢌꢌPD[
96ꢌ 6ꢌ
ꢌ
ꢌ
ꢌ
Internet Data Sheet
HYB18TC1G[80/16]0AF
1-Gbit DDR2 SDRAM
FIGURE 7
Method for calculating transitions and endpoint
VOH - x mV
VTT + 2x mV
VOH - 2x mV
VTT + x mV
tLZ
tHZ
tRPRE begin point
tRPST end point
VOL + 2x mV
VOL + x mV
VTT - x mV
VTT - 2x mV
T1 T2
tLZ,tRPRE begin point = 2*T1-T2
T1 T2
tHZ,tRPST end point = 2*T1-T2
FIGURE 8
Differential input waveform timing - tDS and tDS
'46ꢌ
'46
W'+ꢌ
W'6ꢌ
9'ꢌ '4
FIGURE 9
Differential input waveform timing - tlS and tlH
CK
CK
tIH
tIH
tIS
tIS
VDDQ
VIH(ac) min
VIH(dc) min
VREF(dc)
VIL(dc) max
VIL(ac) max
VSS
Rev. 1.11, 2006-09
03292006-PJAE-UQLG
41
QIMONDA [ QIMONDA AG ]
