HYS64T128020GU Infineon, HYS64T128020GU Datasheet - Page 27
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HYS64T128020GU
Manufacturer Part Number
HYS64T128020GU
Description
240-Pin Unbuffered DDR2 SDRAM Modules
Manufacturer
Infineon
Datasheet
1.HYS64T128020GU.pdf
(67 pages)
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4.1
For testing the
Table 19
Parameter
CAS Latency
Clock Cycle Time
Active to Read or Write delay
Active to Active / Auto-Refresh command period
Active bank A to Active bank B
command delay
Active to Precharge Command
Precharge Command Period
Auto-Refresh to Active / Auto-Refresh command
period
Average periodic Refresh interval
1) For modules based on x8 components
2) For modules based on x16 components
4.2
The ODT function adds additional current consumption to the DDR2 SDRAM when enabled by the EMRS(1).
Depending on address bits A6 & A2 in the EMRS(1) a “week” or “strong” termination can be selected. The current
consumption for any terminated input pin, depends on the input pin is in tristate or driving 0 or 1, as long a ODT
is enabled during a given period of time.
Table 20
Enabled ODT current per DQ
added IDDQ current for ODT enabled;
ODT is HIGH; Data Bus inputs are
FLOATING
Active ODT current per DQ
added IDDQ current for ODT enabled;
ODT is HIGH; worst case of Data Bus inputs
are STABLE or SWITCHING.
Note: For power consumption calculations the ODT duty cycle has to be taken into account
Data Sheet
I
I
ODT (On Die Termination) Current
ODT current per terminated pin:
DD
DD
I
DD
Measurement Test Conditions
Test Conditions
parameters, the following timing parameters are used:
HYS[64T[3200/6400/12802]0/72T[6400/12802]0][G/H]U–[3.7/5]–A
x8
x16
1)
2)
I
I
ODTO
ODTT
C
t
t
t
t
t
t
t
t
t
Symbol
CKmin
RCDmin
RCmin
RRDmin
RRDmin
RASmin
RPmin
RFCmin
REFI
Lmin
27
EMRS(1)
State
A6 = 0, A2 = 1 5
A6 = 1, A2 = 0 2.5
A6 = 0, A2 = 1 10
A6 = 1, A2 = 0 5
-5
PC2-3200
3-3-3
3
5
15
55
7.5
10
40
15
105
7.8
min.
I
DD
Specifications and Conditions
typ.
6
3
12
6
512 Mbit DDR2 SDRAM
-3.7
PC2-4200
4-4-4
4
3.75
15
60
7.5
10
45
15
105
7.8
09122003-GZEK-H4J6
max.
7.5
3.75
15
7.5
Rev. 0.87, 2004-06
Unit
t
ns
ns
ns
ns
ns
ns
ns
ns
µs
CK
Unit
mA/DQ
mA/DQ
mA/DQ
mA/DQ
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