M393T6450FG0-CC SAMSUNG [Samsung semiconductor], M393T6450FG0-CC Datasheet - Page 9

• Manufacturer Part Number: M393T6450FG0-CC
• Description: DDR2 Registered SDRAM MODULE 240pin Registered Module based on 256Mb F-die 72-bit ECC
• Manufacturer: SAMSUNG [Samsung semiconductor]

Operating Temperature Condition
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
256MB, 512MB Registered DIMMs
1. Operating Temperature is the case surface temperature on the center/top side of the DRAM. For the measurement conditions, please refer to
2. At 0 - 85 °C, operation temperature range are the temperature which all DRAM specification will be supported.
3. At 85 - 95 °C operation temperature range, doubling refresh commands in frequency to a 32ms period ( tREFI=3.9 us ) is required, and to enter to
max for falling edges as shown in the below figure.
transitions.
V
JESD51.2 standard.
self refresh mode at this temperature range, an EMRS command is required to change internal refresh rate.
Symbol
V
Symbol
V
V
V
SWING(MAX)
IH
Symbol
IL
IH
IL
SLEW
V
Symbol
(DC)
(AC)
TOPER
(DC)
(AC)
REF
AC input logic high
AC input logic low
Input reference voltage
Input signal maximum peak to peak swing
Input signal minimum slew rate
Parameter
DC input logic high
DC input logic low
Parameter
V
Falling Slew =
SWING(MAX)
Operating Temperature
Parameter
V
delta TF
REF
Condition
Min.
DDR2-400, DDR2-533
+ 0.250
-
V
REF
< AC Input Test Signal Waveform >
- V
delta TF
IL
(AC) max
V
V
REF
IL
REF
(AC) to V
Max.
Min.
- 0.3
- 0.250
-
+ 0.125
delta TR
IH
IH/IL
REF
(AC) on the positive transitions and V
Rising Slew =
(AC) level applied to the device under test.
to V
V
Rating
0 to 95
REF
IH
Min.
(AC) min for rising edges and the range from V
+ 0.200
0.5 * V
Value
1.0
1.0
DDR2-667
V
V
DDQ
IH
V
REF
(AC) min - V
DDQ
V
V
V
V
V
V
V
Max.
delta TR
DDQ
IH
IH
REF
IL
IL
SS
- 0.125
(DC) max
(AC) max
V
(AC) min
(DC) min
+ 0.3
REF
Max.
- 0.200
REF
Units
°C
Units
V/ns
Rev. 1.3 Aug. 2005
IH
V
V
(AC) to V
DDR2 SDRAM
Units
Units
V
V
V
V
IL
(AC) on the negative
Notes
1, 2, 3
REF
Notes
2, 3
1
1
Notes
Notes
to V
IL
(AC)