k4t51043qc-zle7 Samsung Semiconductor, Inc., k4t51043qc-zle7 Datasheet - Page 12

• Manufacturer Part Number: k4t51043qc-zle7
• Description: 512mb C-die Ddr2 Sdram
• Manufacturer: Samsung Semiconductor, Inc.

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
512Mb C-die DDR2 SDRAM
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 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
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.
SWING(MAX)
V
Symbol
Symbol
V
Symbol
V
V
SLEW
IH
V
Symbol
IH
IL
TOPER
IL
REF
(DC)
(DC)
(AC)
(AC)
DC input logic high
DC input logic low
AC input logic high
AC input logic low
Parameter
Parameter
Input signal maximum peak to peak swing
V
Input signal minimum slew rate
Falling Slew =
SWING(MAX)
Operating Temperature
Input reference voltage
Parameter
delta TF
Condition
VREF + 0.125
V
VREF + 0.250
REF
< AC Input Test Signal Waveform >
Min.
- 0.3
- V
delta TF
Min.
DDR2-400, DDR2-533
IL
-
(AC) max
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IL
(AC) to V
VREF - 0.250
IH
Max.
delta TR
REF
(AC) on the positive transitions and V
VREF - 0.125
IH/IL
VDDQ + 0.3
-
Rising Slew =
to V
(AC) level applied to the device under test.
Max.
Rating
0 to 95
IH
(AC) min for rising edges and the range from V
0.5 * V
VREF + 0.200
Value
1.0
1.0
Min.
V
DDR2-667, DDR2-800
DDQ
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
Units
REF
V
V
VREF - 0.200
qC
Units
Max.
V/ns
IH
V
V
(AC) to V
DDR2 SDRAM
Rev. 1.4 Aug. 2005
IL
(AC) on the negative
Notes
Notes
REF
1, 2
Units
Notes
2, 3
V
V
1
1
to V
IL
(AC)