m470t6464az3 Samsung Semiconductor, Inc., m470t6464az3 Datasheet - Page 11

• Manufacturer Part Number: m470t6464az3
• Description: Ddr2 Unbuffered Sodimm 200pin Unbuffered Sodimm Based On 1gb A-die 64-bit Non-ecc
• Manufacturer: Samsung Semiconductor, Inc.

9.2 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
 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 self
9.5 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
9.3 Input DC Logic Level
9.4 Input AC Logic Level
SODIMM
JESD51.2 standard.
refresh mode at this temperature range, an EMRS command is required to change internal refresh rate.
max for falling edges as shown in the below figure.
transitions.
V
SWING(MAX)
Symbol
V
Symbol
V
Symbol
V
V
SLEW
IH
V
Symbol
IL
TOPER
IH
IL
REF
(DC)
(DC)
(AC)
(AC)
Input reference voltage
Input signal maximum peak to peak swing
Input signal minimum slew rate
AC input logic high
AC input logic low
Parameter
DC input logic high
DC input logic low
Parameter
Operating Temperature
V
Falling Slew =
SWING(MAX)
Parameter
Condition
delta TF
V
REF
V
REF
< AC Input Test Signal Waveform >
Min.
+ 0.250
DDR2-400, DDR2-533
-
- V
delta TF
IL
(AC) max
V
IL
REF
(AC) to V
11 of 20
Min.
- 0.3
+ 0.125
V
REF
IH
IH/IL
REF
(AC) on the positive transitions and V
Max.
delta TR
- 0.250
-
(AC) level applied to the device under test.
to V
Rising Slew =
Rating
0 to 95
IH
V
(AC) min for rising edges and the range from V
V
REF
0.5 * V
DDQ
Max.
Value
- 0.125
1.0
1.0
+ 0.3
V
DDQ
REF
V
Min.
IH
+ 0.200
(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
DDR2-667
Units
qC
REF
Units
Units
V/ns
V
V
IH
V
V
V
(AC) to V
Rev. 1.4 March 2007
REF
DDR2 SDRAM
Max.
- 0.200
IL
(AC) on the negative
Notes
1, 2, 3
REF
Notes
Notes
2, 3
1
1
Units
to V
V
V
IL
(AC)