1. Operating temperature is the case surface temperature on the center/top side of the DRAM. For the measurement conditions, please refer to JEDEC JESD51.2.
2. At 0 - 85
ºC, operation temperature range, all DRAM specification will be supported.
INPUT DC LOGIC LEVEL
All voltages referenced to V
SS
Parameter
Input High (Logic 1) Voltage
Input Low (Logic 0) Voltage
Symbol
V
IH(DC)
V
IL(DC)
Min
VREF + 0.125
-0.300
Max
VREF + 0.300
VREF - 0.125
Units
V
V
INPUT AC LOGIC LEVEL
All voltages referenced to V
SS
Parameter
AC Input High (Logic 1) Voltage
AC Input Low (Logic 0) Voltage DDR2-400 & DDR2-533
AC Input Low (Logic 0) Voltage DDR2-667, DDR2-800 (TBD)
Symbol
V
IH(AC)
V
IL(AC)
V
IL(AC)
Min
VREF+ 0.250
VREF - 0.250
VREF - 0.200
Max
Units
V
V
V
December 2005
Rev. 0
5
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
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MicroPython Open Source section
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