m393t6553bg Samsung Semiconductor, Inc., m393t6553bg Datasheet - Page 10

• Manufacturer Part Number: m393t6553bg
• Description: Ddr2 Registered Sdram Module 240pin Registered Module Based On 512mb B-die 72-bit Ecc
• Manufacturer: Samsung Semiconductor, Inc.

Operating Temperature Condition
Note :
1. Operating Temperature is the case surface temperature on the center/top side of the DRAM. For the measurement conditions, please refer to JESD51.2
2. At 0 - 85 qC, operation temperature range are the temperature which all DRAM specification will be supported.
3. At 85 - 95 qC operation temperature range, doubling refresh commands in frequency to a 32ms period ( tREFI=3.9 us ) is required, and to enter to self
Input DC Logic Level
Input AC Logic Level
AC Input Test Conditions
Notes:
1. Input waveform timing is referenced to the input signal crossing through the V
2. The input signal minimum slew rate is to be maintained over the range from V
3. AC timings are referenced with input waveforms switching from V
512MB, 1GB, 2GB Registered DIMMs
standard.
refresh mode at this temperature range, an EMRS command is required to change internal refresh rate.
max for falling edges as shown in the below figure.
transitions.
V
SWING(MAX)
Symbol
Symbol
Symbol
V
V
V
V
SLEW
V
Symbol
IH
IL
IH
TOPER
IL
(DC)
REF
(DC)
(AC)
(AC)
Input reference voltage
Input signal maximum peak to peak swing
Input signal minimum slew rate
DC input logic high
AC input logic high
DC input logic low
AC input logic low
Parameter
Parameter
Operating Temperature
V
Falling Slew =
SWING(MAX)
Parameter
Condition
delta TF
V
REF
< AC Input Test Signal Waveform >
- V
delta TF
IL
(AC) max
V
V
IL
REF
REF
(AC) to V
Min.
- 0.3
Min.
+ 0.125
+ 0.250
-
IH
IH/IL
REF
(AC) on the positive transitions and V
delta TR
(AC) level applied to the device under test.
to V
Rating
0 to 95
Rising Slew =
IH
V
V
(AC) min for rising edges and the range from V
V
REF
REF
0.5 * V
DDQ
Max.
Max.
Value
- 0.125
- 0.250
1.0
1.0
-
+ 0.3
DDQ
V
IH
(AC) min - V
V
V
V
V
V
V
V
delta TR
DDQ
IH
IH
REF
IL
IL
SS
(DC) max
(AC) max
(AC) min
(DC) min
Units
qC
Units
Units
REF
Units
Rev. 1.3 Aug. 2005
V/ns
V
V
V
V
IH
V
V
(AC) to V
DDR2 SDRAM
IL
(AC) on the negative
Notes
1, 2, 3
REF
Notes
Notes
Notes
2, 3
1
1
to V
IL
(AC)