EM44CM1688LBB
AC Operating Test Characteristics (Continued)
(VDD=1.8V±0.1V, TA=0°C ~70°C)
Speed 667/800
Units
Symbol
Parameter
Min.
2
Max.
ODT turn-on delay
tAOND
tAOFD
tAON
2
tCK
tCK
ns
ns
ns
tCK
tCK
tCK
ODT turn-off delay
ODT turn-on(Note1)
ODT turn-off(Note2)
2.5
2.5
tAC(max) +0.7
tAC(max) +0.6
2*tCK + tAC(max) +1
2.5*tCK + tAC(max) +1
-
tAC(min.)
tAC(min.)
tAC(min.) +2
tAC(min.) +2
3
tAOF
ODT turn-on in power-down mode
ODT turn-off in power-down mode
ODT to power-down mode entry latency
ODT power-down exit latency
tAONPD
tAOFPD
tANPD
tAXPD
8
-
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
.
Nov. 2010
14/29
www.eorex.com
EOREX [ EOREX CORPORATION ]
