hyb18t512161bf-33 Infineon Technologies Corporation, hyb18t512161bf-33 Datasheet - Page 77

• Manufacturer Part Number: hyb18t512161bf-33
• Description: 512-mbit X16 Gddr2 Dram
• Manufacturer: Infineon Technologies Corporation

5.7
5.7.1
Table 35
Speed Grade
Parameter
Clock
Frequency
Row Active Time
Row Cycle Time
RAS-CAS-Delay
Row Precharge Time
1) Timings are guaranteed with CK/CK differential Slew Rate of 2.0 V/ns. For DQS signals timings are guaranteed with a
2) The CK/CK input reference level (for timing reference to CK/CK) is the point at which CK and CK cross. The DQS / DQS,
3) Inputs are not recognized as valid until
4) The output timing reference voltage level is
5)
Data Sheet
differential Slew Rate of 2.0 V/ns in differential strobe mode and a Slew Rate of 1 V/ns in single ended mode. For other
Slew Rates see Chapter 8Timings are further guaranteed for normal OCD drive strength (EMRS(1) A1 = 0)
“Reference Load for Timing Measurements” according to Chapter 8.1
RDQS / RDQS, input reference level is the crosspoint when in differential strobe mode; The input reference level for signals
other than CK/CK, DQS / DQS, RDQS / RDQS is defined in Chapter 8.3.
recognized as low.
t
equal to 9 x
RAS.MAX
is calculated from the maximum amount of time a DDR2 device can operate without a refresh command which is
AC Characteristics
Speed Grade Definitions
Speed Grade Definition
t
REFI
@ CL = 3
@ CL = 4
@ CL = 5
@ CL = 6
@ CL = 7
.
Symbol Min. Max.
t
t
t
t
t
t
t
t
t
CK
CK
CK
CK
CK
RAS
RC
RCD
RP
V
REF
–22
3.75 8
3.75 8
3
2.5
2.2
45
60
15
15
V
stabilizes. During the period before
TT
. See section 8 for the reference load for timing measurements.
8
8
8
70000 45
—
—
—
–25
77
Min. Max.
3.75 8
3.75 8
3
2.5
—
60
15
15
512-Mbit Double-Data-Rate-Two SDRAM
8
8
—
70000 45
—
—
—
–28
Min. Max.
3.75 8
3.75 8
3
2.8
—
60
15
15
HYB18T512161BF–22/25/28/33
only.
V
8
8
—
70000 45
—
—
—
REF
stabilizes, CKE = 0.2 x
–33
Min.
3.75
3.75
3.33
3.33
—
60
15
15
Electrical Characteristics
05102005-C5U8-7TLE
Max.
8
8
8
8
—
70000
—
—
—
Rev. 1.1, 2005-08
Unit Note
ns
ns
ns
ns
ns
ns
ns
ns
ns
under the
V
DDQ
1)2)3)4)
1)2)3)4)
1)2)3)4)
1)2)3)4)
1)2)3)4)
1)2)3)4)
5)
1)2)3)4)
1)2)3)4)
1)2)3)4)
is