HYB25D128323C[-3/-3.3/-3.6/-4.5/-5.0/L3.6/L4.5]
128 Mbit DDR SGRAM [4M x 32]
Electrical Characteristics
Data Sheet
46
V1.7, 2003-07
Internal WRITE to
READ command
delay
Write DQS High
level Width
Write DQS Low level
Width
t
WTR
1
—
1
—
1
—
1
—
1
—
t
CK
—
t
DQSH
0.35 0.65
0.35 0.65
0.35
0.65
0.35 0.65
0.35 0.65
t
CK
—
t
DQSL
0.35 0.65
0.35 0.65
0.35
0.65
0.35 0.65
0.35 0.65
t
CK
—
Refresh Cycle
Refresh Period
(4096 cycles)
Average periodic
refresh interval
Refresh to Refresh
command interval
t
REF
—
32
—
32
—
32
—
32
—
32
ms
—
t
REFC
—
7.8
—
7.8
—
7.8
—
7.8
—
7.8
us
—
t
REFC
—
15.7
—
15.7
—
15.7
—
15.7
—
15.7
μ
s
—
Mode Setup, Power Down & Self Refresh
Mode Register Set
cycle time
Self Refresh Exit
time
Power Down Exit
time
t
MRD
2
—
2
—
2
—
2
—
2
—
t
CK
—
t
SREX
200
—
200
—
200
—
200
—
200
—
t
CK
—
t
PDEX
2*
t
CK
+
t
IS
—
2*
t
CK
+
t
IS
—
2*
t
CK
+
t
IS
—
1*
t
CK
+
t
IS
—
1*
t
CK
+
t
IS
—
ns
—
1) All parameters only valid for:
T
A
= 0 to 70 °C;
V
SS
= 0 V; 2.5 V <
V
DD
< 2.9 V for –3 and –3.3; 2.375 V <
V
DD
< 2.9 V for
–3.6;
V
DD
= 2.5 V
±
0.125 V for –4.5 and –5;
V
DDQ
= 2.5 V
±
0.125 V
2) Maximum clock rate is only guaranteed with the specified interface. The SSTL2-Weak Mode interface is limited to a
maximum speed of 250MHz.
3) The Write Recovery Time starts at the first rising edge of clock after the last valid (falling) DQS edge of the slowest DQS
signal.
Table 18
Part Number Extension
Interface
Parameter
Timing Parameters for speed sorts L3.6 and L4.5
L3.6
MIM
L4.5
WM/MIM
min.
Unit Note
1)
—
—
—
2)
Symbol min.
max.
max.
Clock and Clock Enable
Clock Cycle Time
3.6
4.2
166
100
0.45
6.0
10
278
238
0.55
4.5
4.5
166
100
0.45
6.0
10
222
222
0.55
ns
ns
MHz CL = 4
MHz CL = 3
t
CK
—
CL = 4
CL = 3
t
CK
f
CK
f
CK
t
CH
System frequency
Clock high level width
Table 17
Part Number Extension
Interface
Parameter
Timing Parameters for speed sorts –3, –3.3, –3.6, –4.5, and –5
(cont’d)
–3
–3.3
MIM
MIM
Symbol min. max. min. max. min. max.
–3.6
MIM
–4.5
WM/MIM
min. max.
–5
WM/MIM
min. max. —
Unit Note
1)
—
—
2)