EM44CM1688LBA
AC Operating Test Characteristics (Continued)
(VDD=1.8V±0.1V, TA=0°C ~85°C)
Symbol
Parameter
Min.
Units
Speed 667/800
Max.
ODT turn-on delay
tAOND
tAOFD
tAON
2
2
tCK
tCK
ns
ns
ns
ODT turn-off delay
2.5
2.5
ODT turn-on(Note1)
ODT turn-off(Note2)
tAC(min.)
tAC(min.)
tAC(min.) +2
tAC(max) +0.7
tAC(max) +0.6
2*tCK + tAC(max) +1
tAOF
ODT turn-on in power-down mode
tAONPD
ODT turn-off in power-down mode
tAOFPD
tAC(min.) +2
2.5*tCK + tAC(max) +1
tCK
ODT to power-down mode entry latency
ODT power-down exit latency
-
-
tANPD
tAXPD
3
8
tCK
tCK
Note 1: ODT turn on time min is when the device leaves high impedance and ODT resistance begins
to turn on. ODT turn on time max is when the ODT resistance is fully on. Both are measure
from tAOND
.
Note 2: ODT turn off time min is when the device starts to turn off ODT resistance ODT turn off time
max is when the bus is in high impedance. Both are measured from tAOFD
.
Jun. 2010
13/28
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EOREX [ EOREX CORPORATION ]
