參數(shù)資料
型號(hào)： K4T51043QC-ZCCC
廠商： SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述： 512Mb C-die DDR2 SDRAM
中文描述： 葷的512Mb芯片DDR2內(nèi)存
文件頁(yè)數(shù)： 12/29頁(yè)
文件大?。?/td> 629K
代理商： K4T51043QC-ZCCC
Page 12 of 29
Rev. 1.4 Aug. 2005
DDR2 SDRAM
512Mb C-die DDR2 SDRAM
Operating Temperature Condition
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.
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
IH/IL
(AC) level applied to the device under test.
2. The input signal minimum slew rate is to be maintained over the range from V
REF
to V
IH
(AC) min for rising edges and the range from V
REF
to V
IL
(AC)
max for falling edges as shown in the below figure.
3. AC timings are referenced with input waveforms switching from V
IL
(AC) to V
IH
(AC) on the positive transitions and V
IH
(AC) to V
IL
(AC) on the negative
transitions.
Symbol
Parameter
Rating
Units
Notes
TOPER
Operating Temperature
0 to 95
°
C
1, 2
Symbol
Parameter
Min.
Max.
Units
Notes
V
IH
(DC)
DC input logic high
VREF + 0.125
VDDQ + 0.3
V
V
IL
(DC)
DC input logic low
- 0.3
VREF - 0.125
V
Symbol
Parameter
DDR2-400, DDR2-533
DDR2-667, DDR2-800
Units
Min.
Max.
Min.
Max.
V
IH
(AC)
AC input logic high
VREF + 0.250
-
VREF + 0.200
V
V
IL
(AC)
AC input logic low
-
VREF - 0.250
VREF - 0.200
V
Symbol
Condition
Value
Units
Notes
V
REF
Input reference voltage
0.5 * V
DDQ
V
1
V
SWING(MAX)
Input signal maximum peak to peak swing
1.0
V
1
SLEW
Input signal minimum slew rate
1.0
V/ns
2, 3
V
DDQ
V
IH
(AC) min
V
IH
(DC) min
V
REF
V
IL
(DC) max
V
IL
(AC) max
V
SS
< AC Input Test Signal Waveform >
V
SWING(MAX)
delta TR
delta TF
V
REF
- V
IL
(AC) max
delta TF
Falling Slew =
Rising Slew =
V
IH
(AC) min - V
REF
delta TR
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