HYB18H1G321AF QIMONDA [Qimonda AG], HYB18H1G321AF Datasheet - Page 39

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

5.12
Rev. 0.92, 2007-10
06122007-MW7D-3G3M
Parameter
Clock and Clock Enable
System frequency
Clock high level width
Clock low level width
Minimum clock half period
Command and Address Setup and Hold Timing
Address/Command input setup
time
Address/Command input hold time
Address/Command input pulse
width
Mode Register Set Timing
Mode Register Set cycle time
Mode Register Set to READ timing
Row Timing
Row Cycle Time
Row Active Time
ACT(a) to ACT(b) Command
period
ACT(a) to ACT(b) Command
period (different rank)
Row Precharge Time
Row to Column Delay Time for
Reads
Row to Column Delay Time for
Writes
Four Active Windows within Rank
Column Timing
CAS(a) to CAS(b) Command
period
Internal write to Read Command
Delay
AC Timings for HYB18H1G321AF–10/11/14
CAS
latency
CL = 12
CL =11
CL = 9
Symbo
l
f
f
f
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
CK12
CK11
CK9
CH
CL
HP
IS
IH
IPW
MRD
MRDR
RC
RAS
RRD
RRD_RR
RP
RCDRD
RCDWR
FAW
CCD
WTR
–10
min
450
400
—
0.45
0.45
0.45
0.24
0.24
0.7
6
12
37
23
9
—
14
13
t
36
BL/2
7
RCDWR(Min)
1000
900
—
0.55
0.55
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
max
= max(
39
t
RCDRD(Min)
Timing Parameters (HYB18H1G321AF–10/11/14 )
–11
400
0.45
0.45
0.45
0.27
0.27
0.7
6
12
35
22
8
13
12
35
6
min
—
—
1
BL/2
Limit Values
- (WL + 1) ×
max
—
900
—
0.55
0.55
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
t
CK
-14
min
—
450
—
0.45
0.45
0.45
0.35
0.35
0.7
6
12
34
22
7
1
12
11
35
BL/2
6
;2×
HYB18H1G321AF–10/11/14
t
CK
)
max
—
700
—
0.55
0.55
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Internet Data Sheet
TABLE 22
1-Gbit GDDR3
ns
ns
Unit Note
MHz
MHz
MHz
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
1)
2)
2)
3)
3)
3)4)
3)
5)6)
5)
7)
8)
9)