K4T1G164QE-HCF7

Manufacturer Part NumberK4T1G164QE-HCF7
ManufacturerSamsung
K4T1G164QE-HCF7 datasheet
 

Specifications of K4T1G164QE-HCF7

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K4T1G164QE
7.2 Operating Temperature Condition
Symbol
T
Operating Temperature
OPER
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 standard.
2. 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
self refresh mode at this temperature range, an EMRS command is required to change internal refresh rate.
7.3 Input DC Logic Level
Symbol
Parameter
V
(DC)
DC input logic high
IH
V
(DC)
DC input logic low
IL
7.4 Input AC Logic Level
Symbol
Parameter
V
(AC)
AC input logic high
IH
V
(AC)
AC input logic low
IL
Note :
1. For information related to V
value, Refer to overshoot/undershoot specification in device operation and timing datasheet; maximum peak ampli-
PEAK
tude allowed for overshoot and undershoot.
7.5 AC Input Test Conditions
Symbol
V
Input reference voltage
REF
V
Input signal maximum peak to peak swing
SWING(MAX)
SLEW
Input signal minimum slew rate
Note :
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
max for falling edges as shown in the below figure.
3. AC timings are referenced with input waveforms switching from V
transitions.
V
SWING(MAX)
Falling Slew =
Parameter
Rating
0 to 95
Min.
Max.
V
+ 0.125
V
REF
DDQ
- 0.3
V
- 0.125
REF
DDR2-667, DDR2-800
Min.
V
+ 0.200
REF
V
- V
SSQ
PEAK
Condition
(AC) level applied to the device under test.
IH/IL
to V
REF
IH
(AC) to V
(AC) on the positive transitions and V
IL
IH
delta TF
delta TR
V
- V
(AC)max
REF
IL
Rising Slew =
delta TF
< AC Input Test Signal Waveform >
13 of 45
DDR2 SDRAM
Units
°C
Units
+ 0.3
V
V
Max.
V
+ V
DDQ
PEAK
V
- 0.200
REF
Value
Units
0.5 * V
V
DDQ
1.0
V
1.0
V/ns
(AC) min for rising edges and the range from V
(AC) to V
(AC) on the negative
IH
IL
V
DDQ
V
(AC)min
IH
V
(DC)min
IH
V
REF
V
(DC)max
IL
V
(AC)max
IL
V
SS
V
(AC)min - V
IH
REF
delta TR
Rev. 1.1 December 2008
Notes
1, 2
Notes
Units
V
V
Notes
1
1
2, 3
to V
(AC)
REF
IL