EtronTech
EM68916CWQA
Table 22. AC overshoot/undershoot specification for clock, data, strobe, and mask pins
(DQ, UDQS, LDQS, UDQS#, LDQS#, DM, CK, CK#)
Parameter
-25
0.5
-3
-37
0.5
Unit
V
Maximum peak amplitude allowed for overshoot area
Maximum peak amplitude allowed for undershoot area
Maximum overshoot area above VDD
0.5
0.5
0.5
0.5
V
0.23
0.23
0.23
0.23
0.28
0.28
V-ns
V-ns
Maximum undershoot area below VSS
Table 23. Output AC test conditions (
VDD = 1.8V ± 0.1V, TOPR = 0~85 °C)
Symbol
Parameter
-25/3/37
Unit Note
VOTR Output timing measurement reference level
0.5xVDDQ
V
1
NOTE1: The VDDQ of the device under test is referenced.
Table 24. Output DC current drive
(VDD = 1.8V ± 0.1V, TOPR = 0~85 °C)
Symbol
Parameter
-25/3/37
-13.4
Unit Note
mA 1, 3, 4
mA 2, 3, 4
IOH(dc) Output minimum source DC current
IOL(dc) Output minimum sink DC current
13.4
NOTE1: VDDQ = 1.7 V; VOUT = 1420 mV. (VOUT - VDDQ) /IOH must be less than 21 Ω for values of VOUT between
VDDQ and VDDQ - 280 mV.
NOTE2: VDDQ = 1.7 V; VOUT = 280 mV. VOUT/IOL must be less than 21 Ω for values of VOUT between 0 V and 280
mV.
NOTE3: The dc value of VREF applied to the receiving device is set to VTT
NOTE4: The values of IOH (dc) and IOL (dc) are based on the conditions given in Notes 1 and 2. They are used
to test device drive current capability to ensure VIH min plus a noise margin and VIL max minus a noise
margin are delivered to an SSTL_18 receiver. The actual current values are derived by shifting the
desired driver operating point (see JEDEC standard: Section 3.3 of JESD8-15A) along a 21 Ω load line
to define a convenient driver current for measurement.
Table 25. Capacitance
(VDD = 1.8V, f = 1MHz, TOPR = 25 °C)
-25
-3
-37
Symbol
Parameter
Unit
Min. Max. Min. Max. Min. Max.
CIN1
CIN2
CI/O
Input Capacitance : Command and Address
Input Capacitance (CK, CK#)
1.0 1.75 1.0
2.0
2.0
1.0
1.0
2.5
-
2.0
2.0
4.0
0.5
pF
pF
pF
pF
1.0
2.0
3.5
1.0
DM0, DM1, DQ, DQS Input/Output Capacitance
Delta Input/Output Capacitance: DM0, DM1, DQ, DQS
Delta Input Capacitance: Command and Address
Delta Input Capacitance: CK, CK#
2.5
2.5
3.5
DCIO
DCI1
DCI2
-
-
-
0.5
-
-
-
0.5
0.25
0.25
0.25
0.25
-
0.25 pF
0.25 pF
-
NOTE: These parameters are periodically sampled and are not 100% tested.
Etron Confidential
24
Rev. 1.1
Apr. 2009
ETRON [ ETRON TECHNOLOGY, INC. ]
