K4T51043QG SAMSUNG [Samsung semiconductor], K4T51043QG Datasheet - Page 13

• Manufacturer Part Number: K4T51043QG
• Description: 512Mb G-die DDR2 SDRAM Specification
• Manufacturer: SAMSUNG [Samsung semiconductor]

K4T51043QG
K4T51083QG
K4T51163QG
7.2 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 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
7.3 Input DC Logic Level
7.4 Input AC Logic Level
Note :
1. For information related to V
7.5 AC Input Test Conditions
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
3. AC timings are referenced with input waveforms switching from V
self refresh mode at this temperature range, an EMRS command is required to change internal refresh rate.
tude allowed for overshoot and undershoot.
standard.
max for falling edges as shown in the below figure.
transitions.
V
SWING(MAX)
Symbol
V
V
Symbol
SLEW
IH
Symbol
IL
V
Symbol
V
V
T
IH
(AC)
REF
IL
(AC)
OPER
(DC)
(DC)
AC input logic high
AC input logic low
DC input logic high
DC input logic low
PEAK
Parameter
Parameter
Input signal maximum peak to peak swing
value, Refer to overshoot/undershoot specification in device operation and timing datasheet; maximum peak ampli-
V
Input signal minimum slew rate
Falling Slew =
SWING(MAX)
Operating Temperature
Input reference voltage
Parameter
delta TF
Condition
V
V
V
REF
V
SSQ
REF
REF
< AC Input Test Signal Waveform >
- V
delta TF
Min.
Min.
- 0.3
DDR2-400, DDR2-533
+ 0.250
- V
IL
+ 0.125
(AC) max
PEAK
IL
(AC) to V
13 of 47
V
V
DDQ
REF
IH
delta TR
IH/IL
Max.
REF
(AC) on the positive transitions and V
+ V
V
- 0.250
V
Rising Slew =
(AC) level applied to the device under test.
REF
DDQ
to V
PEAK
Max.
Rating
0 to 95
- 0.125
IH
+ 0.3
(AC) min for rising edges and the range from V
0.5 * V
Value
1.0
1.0
V
V
SSQ
REF
V
DDQ
IH
Min.
(AC) min - V
DDR2-667, DDR2-800
+ 0.200
- V
V
V
V
V
V
V
V
delta TR
DDQ
IH
IH
REF
IL
IL
SS
PEAK
(DC) max
(AC) max
(AC) min
(DC) min
Units
Units
REF
V
V
°C
Rev. 1.4 December 2008
Units
V
V/ns
V
DDQ
IH
V
V
REF
(AC) to V
DDR2 SDRAM
Max.
+ V
- 0.200
PEAK
IL
(AC) on the negative
Notes
Notes
1, 2
REF
Notes
2, 3
Units
1
1
to V
V
V
IL
(AC)