HYS64V64220GU INFINEON [Infineon Technologies AG], HYS64V64220GU Datasheet - Page 8

• Manufacturer Part Number: HYS64V64220GU
• Description: 3.3 V 64M x 64/72-Bit, 512MByte SDRAM Modules 168-pin Unbuffered DIMM Modules
• Manufacturer: INFINEON [Infineon Technologies AG]

INFINEON Technologies
AC Characteristics (cont’d)
T
Refresh Cycle
Refresh Period (8192 cycles)
Self Refresh Exit Time
Read Cycle
Data Out Hold Time
Data Out to Low Impedance
Data Out to High Impedance
DQM Data Out Disable Latency
Write Cycle
Data Input to Precharge
(write recovery)
DQM Write Mask Latency
Notes
4. All AC characteristics are shown on SDRAM component level.
5. AC timing tests have
6. If clock rising time is longer than 1 ns, a time (
7. Rated at 1.4 V
8. If
9. Anytime the Refresh Period has been exceeded, a minimum of two Auto-Refresh (CBR)
10.Timing is asynchronous. If setup time is not met by rising edge of the clock then the CKE signal
Parameter
A
An initial pause of 100 s is required after power-up, then a Precharge All Banks command must
be given followed by eight Auto-Refresh (CBR) cycles before the Mode Register Set Operation
can begin.
point. The transition time is measured between
t
with a 50 pF only, without any resistive termination and with a input signal of 1 V/ns edge rate
between 0.8 V and 2.0 V.
commands must be given to “wake-up” the device.
is assumed latched on the next cycle.
= 0 to 70 C;
T
t
= 1 ns with the AC output load circuit show. Specified
T
is longer than 1 ns, a time (
V
SS
= 0 V;
V
IL
= 0.4 V and
V
DD
1), 2)
= 3.3 V
t
T
– 1) ns has to be added to this parameter.
Symbol
t
t
t
t
t
t
t
t
V
REF
SREX
OH
LZ
HZ
DQZ
WR
DQW
IH
0.3 V,
= 2.4 V with the timing referenced to the 1.4 V crossover
min. max min. max. min. max.
64
–
3
0
3
–
2
0
PC133-222
t
8
T
t
T
= 1 ns
/2 – 0.5) ns must be added to this parameter.
-7
V
–
1
–
–
7
2
–
–
IH
and
t
Limit Values
–
1
3
0
3
–
2
0
AC
PC133-333
V
IL
and
. All AC measurements assume
-7.5
64
–
–
–
7
2
–
–
t
OH
HYS 64/72V64220GU
parameters are measured
–
1
3
0
3
–
2
0
PC100-222
SDRAM-Modules
-8
64
–
–
–
8
2
–
–
Unit Note
ms
CLK
ns
ns
ns
CLK –
CLK –
CLK –
9.01
6)
8)
2)
–
9)