m470t2864qz3 Samsung Semiconductor, Inc., m470t2864qz3 Datasheet - Page 11

• Manufacturer Part Number: m470t2864qz3
• Description: Ddr2 Unbuffered Sodimm
• Manufacturer: Samsung Semiconductor, Inc.

SODIMM
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
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
9.3 Input DC Logic Level
9.4 Input AC Logic Level
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
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
SLEW
Symbol
V
V
V
Symbol
Symbol
V
V
T
IH
IL
REF
IH
IL
OPER
(AC)
(AC)
(DC)
(DC)
Input reference voltage
Input signal maximum peak to peak swing
Input signal minimum slew rate
DC input logic high
DC input logic low
Parameter
AC input logic high
AC input logic low
Operating Temperature
Parameter
V
Falling Slew =
SWING(MAX)
Parameter
Condition
delta TF
V
REF
< AC Input Test Signal Waveform >
V
REF
- V
delta TF
Min.
- 0.3
IL
+ 0.125
(AC) max
IL
(AC) to V
11 of 19
V
REF
Min.
IH
IH/IL
+ 0.200
REF
(AC) on the positive transitions and V
delta TR
(AC) level applied to the device under test.
to V
DDR2-667, DDR2-800
V
0.5 * V
V
Rating
0 to 95
REF
Rising Slew =
DDQ
Value
IH
Max.
1.0
1.0
(AC) min for rising edges and the range from V
- 0.125
+ 0.3
DDQ
V
IH
V
(AC) min - V
REF
V
V
V
V
V
V
V
delta TR
DDQ
IH
IH
REF
IL
IL
SS
Max.
(DC) max
(AC) max
(AC) min
(DC) min
- 0.200
Units
Units
V/ns
Units
V
V
°C
V
V
REF
IH
(AC) to V
DDR2 SDRAM
Rev. 1.1 July 2008
IL
(AC) on the negative
Notes
Notes
Notes
Units
2, 3
1, 2
REF
V
V
1
1
to V
IL
(AC)