HYB18H512321BF-08/10 QIMONDA [Qimonda AG], HYB18H512321BF-08/10 Datasheet - Page 35

• Manufacturer Part Number: HYB18H512321BF-08/10
• Description: 512-Mbit GDDR3 Graphics RAM
• Manufacturer: QIMONDA [Qimonda AG]

Rev. 1.1, 2007-09
05292007-WAU2-UU95
Parameter
Column Timing
CAS(a) to CAS(b) Command
period
Write to Read Command
Delay
Read to Write command
delay
Write Cycle Timing Parameters for Data and Data Strobe
Write command to first
WDQS latching transition
Data-in and Data Mask to
WDQS Setup Time
Data-in and Data Mask to
WDQS Hold Time
Data-in and DM input pulse
width (each input)
DQS input low pulse width
DQS input high pulse width
DQS Write Preamble Time
DQS Write Postamble Time
Write Recovery Time
Read Cycle Timing Parameters for Data and Data Strobe
Data Access Time from
Clock
Read Preamble
Read Postamble
Data-out high impedance
time from CLK
Data-out low impedance time
from CLK
DQS edge to Clock edge
skew
DQS edge to output data
edge skew
Data hold skew factor
Data output hold time from
DQS
Refresh/Power Down Timing
Refresh Period (8192 cycles)
Average periodic Auto
Refresh interval
CAS latency Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
CCD
WTR
RTW
DQSS
DS
DH
DIPW
DQSL
DQSH
WPRE
WPST
WR
AC
RPRE
RPST
HZ
LZ
DQSCK
DQSQ
QHS
QH
REF
REFI
-8
Min
2
8
WL–
0.25
0.13
0.13
0.4
0.45
0.45
0.75
0.75
13
-0.20 -0.20 -0.21 0.21
0.75
0.75
t
t
-0.20 0.20
—
—
—
3.9
ACmin
ACmin
Max
—
—
WL+
0.25
—
—
—
—
—
1.25
1.25
—
1.25
1.25
t
t
0.110 —
0.110 —
32
ACmax
ACmax
–10
Min. Max. Min. Max. Min. Max. Min.
2
7
WL–
0.25
0.14
0.14
0.40
0.40
0.40
0.75
0.75
13
0.75
0.75
t
t
-0.21 0.21
—
3.9
ACmin
ACmin
35
t
RTW(min)
—
—
WL+
0.25
—
—
—
—
—
1.25
1.25
—
1.25
1.25
t
t
0.120 —
0.120 —
32
ACmax
ACmax
= (CL + BL/2 +2 -WL)
Limit Values
-0.22 0.22
-0.22 0.22
3.9
–11
2
6
WL–
0.25
0.15
0.15
0.40
0.40
0.40
0.75
0.75
13
0.75
0.75
t
t
—
ACmin
ACmin
t
HP
–
t
—
—
WL+
0.25
—
—
—
—
—
1.25
1.25
—
1.25
1.25
t
t
0.130 —
0.130 —
32
QHS
ACmax
ACmax
–12
2
6
0.16
0.16
0.40
0.40
0.40
0.75
0.75
12
-0.22 0.22
0.75
0.75
-0.22 0.22
—
WL–
0.25
t
t
3.9
ACmin
ACmin
—
—
WL+
0.25
—
—
—
—
—
1.25
1.25
—
1.25
1.25
t
t
0.140 —
0.140 —
32
ACmax
ACmax
–14
2
5
WL–
0.25
0.18
0.18
0.40
0.40
0.40
0.75
0.75
10
–0.25 0.25
0.75
0.75
t
t
–0.25 0.25
—
3.9
ACmin
ACmin
Internet Data Sheet
HYB18H512321BF
—
—
WL+
0.25
—
—
—
—
—
1.25
1.25
—
1.25
1.25
t
t
0.160 ns
0.160 ns
32
Max.
512-Mbit GDDR3
ACmax
ACmax
Unit Note
t
t
t
t
ns
ns
t
t
t
t
t
t
ns
t
t
ns
ns
ns
ns
ms
μs
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
7)
8)
9)
10)