eorex
EM44AM1684LBC
AC Operating Test Characteristics (Continued)
(VDD=1.8V 0.1V, TA=0°C ~85°C)
-3
-37
-5
Unit
Symbol
Parameter
ODT turn-on delay
Min.
Max.
tAC
Min.
tAC
Max.
Min.
tAC
Max.
tAC
tAOND
tAOFD
2
2
2
tCK
tCK
ODT turn-off delay
2.5
2.5
2.5
tAC
tAC
(Note 1)
(
)
(
)
(
)
MAX
tAON
ns
ns
ODT turn-on
MAX
MAX
(
)
(
)
(
)
MIN
MIN
MIN
+ 1
tAC
+ 1
tAC
( )
MAX
+ 0.6
+ 1
tAC
( )
MAX
+ 0.6
tAC
tAC
tAC
)
MIN
(Note 2)
(
+ 0.6
)
tAOF
ODT turn-off
MAX
(
)
(
)
(
MIN
MIN
2Tck+
tAC
2Tck+
tAC
2Tck+
tAC
tAC
tAC
tAC
( )
MIN
+ 2ns
(
+ 2ns
)
(
)
+ 2ns
tAONPD
ODT turn-on (Power-Down Modes)
ODT turn-off (Power-Down Modes)
ns
ns
MIN
MIN
(
)
(
)
(
)
MAX
MAX
MAX
+ 1ns
2.5Tck
+
+ 1ns
2.5Tck
+
tAC
( )
MAX
+ 1ns
+ 1ns
2.5Tck
+
tAC
tAC
tAC
( )
MIN
+ 2ns
(
)
+ 2ns
tAC
(
)
+ 2ns
tAC
)
MAX
tAOFPD
MIN
MIN
(
+ 1ns
)
(
+ 1ns
MAX
ODT to Power Down Mode Entry
Latency
tANPD
tAXPD
3
8
-
3
8
-
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.
Jul. 2006
www.eorex.com
12/29
EOREX [ EOREX CORPORATION ]
