HYB18H1G321AF QIMONDA [Qimonda AG], HYB18H1G321AF Datasheet - Page 40

• Manufacturer Part Number: HYB18H1G321AF
• Description: GDDR3 Graphics RAM 1-Gbit GDDR3 Graphics RAM
• Manufacturer: QIMONDA [Qimonda AG]

Rev. 0.92, 2007-10
06122007-MW7D-3G3M
Parameter
Internal write to Read Command
Delay (different rank)
Write to Write Command Delay
(different rank)
Read to Write command delay
Read to Read Command Delay
(different rank)
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
Delay from AREF to next ACT/
AREF
Self Refresh Exit time
CAS
latency
Symbo
l
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
WTR_RR
WTW_RR
RTW
RTR_RR
DQSS
DS
DH
DIPW
DQSL
DQSH
WPRE
WPST
WR
AC
RPRE
RPST
HZ
LZ
DQSCK
DQSQ
QHS
QH
REF
REFI
RFC
XSC
–10
min
—
—
t
—
WL–0.25 WL+0.25 WL–0.25 WL+0.25 WL–0.25 WL+0.25
0.14
0.14
0.40
0.40
0.40
0.75
0.75
13
– 0.21
0.75
0.75
t
t
–0.21
—
—
—
3.9
52.0
1000
RTW(min)
ACmin
ACmin
= CL + BL/2+ 2 – WL
—
—
—
—
—
—
—
—
1.25
1.25
—
0.21
1.25
1.25
t
t
0.21
0.120
0.120
32
—
—
max
ACmax
ACmax
40
–11
0.15
0.15
0.40
0.40
0.40
0.75
0.75
– 0.22
0.75
0.75
–0.22
—
52.0
1000
min
BL/2 – 1
BL/2
2
13
t
t
—
—
3.9
ACmin
ACmin
Limit Values
t
HP
–
max
—
—
—
—
—
—
—
—
1.25
1.25
—
0.22
1.25
1.25
t
t
0.22
0.130
0.130
32
—
—
t
ACmax
ACmax
QHS
-14
min
BL/2 – 1
BL/2
2
0.18
0.18
0.40
0.40
0.40
0.75
0.75
10
– 0.25
0.75
0.75
t
t
–0.25
—
—
—
3.9
59
1000
ACmin
ACmin
HYB18H1G321AF–10/11/14
max
—
—
—
—
—
—
—
—
1.25
1.25
—
0.25
1.25
1.25
t
t
0.25
0.160
0.160
32
—
—
ACmax
ACmax
Internet Data Sheet
1-Gbit GDDR3
ns
ns
ns
ns
ns
ns
Unit Note
t
t
t
t
t
t
t
t
t
t
t
t
t
ns
ns
ns
ms
µs
ns
t
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
10)
11)
12)
11)
9)
3)
13)