eorex
EM44BM1684LBB
AC Operating Test Characteristics (Continued)
(VDD=1.8V±0.1V, TA=0°C ~85°C)
-3
Unit
Symbol
Parameter
Min.
Max.
tAC
tAOND
tAOFD
ODT turn-on delay
2
tCK
tCK
ODT turn-off delay
ODT turn-on(Note 1)
2.5
tAC
(
)
tAON
ns
ns
MAX
(
)
MIN
+ 1
tAC
tAC
ODT turn-off(Note 2)
MAX
(
)
tAOF
(
)
MIN
+ 0.6
2Tck+
tAC
tAC
(
)
MIN
tAONPD ODT turn-on (Power-Down Modes)
ns
ns
(
)
MAX
+ 2ns
+ 1ns
2.5Tck
+
tAC
(
)
MIN
tAC
tAOFPD
ODT turn-off (Power-Down Modes)
+ 2ns
(
)
MAX
+ 1ns
ODT to Power Down Mode Entry
Latency
tANPD
tAXPD
3
8
-
tCK
tCK
ODT Power Down Exit Latency
-
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.
Jan. 2008
www.eorex.com
12/29
EOREX [ EOREX CORPORATION ]
