iPEM
4.2 Gb SDRAM-DDR2
Austin Semiconductor, Inc.
AS4DDR264M64PBG1
INPUT DC LOGIC LEVEL
All voltages referenced to Vss
Parameter
Symbol
Min
Max
Unit
VIH (DC)
VREF + 0.125 VCC + 0.3001
Input High (Logic 1) Voltage
V
VIL (DC)
VREF - 0.125
Input Low (Logic 0) Voltage
-0.300
V
Note 1: VCCQ = VCC, 300mV is allowed provided Vcc does not exceed 1.9V
INPUT AC LOGIC LEVEL
All voltages referenced to Vss
Parameter
Symbol
Min
Max
VCC+0.3001
VCC+0.3001
VREF - 0.250
VREF - 0.200
Unit
V
IH (AC)
IH (AC)
VREF + 0.250
AC Input High (Logic 1) Voltage DDR2-400 & DDR2-533
V
V
VREF + 0.200
-0.3
AC Input High (Logic 1) Voltage DDR2-667
ACInput Low (Logic 0) Voltage DDR2-400 & DDR2-533
AC Input Low (Logic 0) Voltage DDR2-667
V
V
V
VIL (AC)
VIL (AC)
-0.3
Note 1: VCCQ = VCC, 300mV is allowed provided Vcc does not exceed 1.9V
Austin Semiconductor, Inc.
●
Austin, Texas
●
512.339.1188
●
www.austinsemiconductor.com
AS4DDR264M64PBG1
Rev. 0.5 06/08
22
AUSTIN [ AUSTIN SEMICONDUCTOR ]
