HYB18M1G16 Datasheet, PDF (23/65 Pages) Qimonda AG – 1-Gbit x16 DDR Mobile-RAM

Data Sheet
HY[B/E]18M1G16[0/1]BF
1-Gbit DDR Mobile-RAM
FIGURE 13
Basic READ Timing Parameters for DQs
CK
CK
DQS
t_CK
tACmax
DQ
t_CK
t_CH
t_CL
t_RPRE
t_DQSCK
t_AC
t_LZ
t_DQSCK
t_RPST
t_DQSQmax
t_HZ
DO n
t_QH
DO n+1 DO n+2 DO n+3
t_QH
DQS
tACmin
t_RPRE
t_DQSCK
t_DQSCK
t_RPST
t_AC
t_DQSQmax
t_HZ
DQ
t_LZ
DO n
t_QH
DO n+1 DO n+2 DO n+3
t_QH
DO n = Data Out from column n
Burst Length = 4 in the case shown
= Don't Care
CAS Latency = 3 in the case shown
All DQ are valid tAC after the CK edge. All DQ are valid tDQSQ after the DQS edge, regardless of tAC
Parameter
DQ output access time from CK/CK
DQS output access time from CK/CK
DQ & DQS low-impedance time from CK/CK
DQ & DQS high-impedance time from CK/CK
DQS - DQ skew
DQ / DQS output hold time from DQS
Data hold skew factor
Read preamble
CL = 3
CL = 2
Read postamble
ACTIVE to PRECHARGE command period
ACTIVE to ACTIVE command period
Symbol
TABLE 11
Timing Parameters for READ Command
-6
- 7.5
Unit Note
min.
max.
min.
max.
t_AC
t_DQSCK
t_LZ
t_HZ
t_DQSQ
t_QH
t_QHS
t_RPRE
2.0
2.0
1.0
–
–
t_HP-t_QHS
–
0.9
0.7
5.5
5.5
–
5.5
0.5
–
0.65
1.1
1.1
2.0
2.0
1.0
–
–
t_HP-t_QHS
–
0.9
0.7
6.5
6.5
–
6.5
0.6
–
0.75
1.1
1.1
ns
1)2)
ns
1)2)
ns
3)
ns
3)
ns
4)
ns
5)
ns
5)
t_CK
–
t_RPST
0.4
t_RAS
42
t_RC
60
0.6
0.4
70,000 45
–
65
0.6
t_CK
–
70,000 ns
6)
–
ns
6)
Rev.1.0, 2007-03
23
10242006-Y557-TZXW