EDJ1108BABG, EDJ1116BABG
ODT Measurement Definitions
Definitions for tAON, tAONPD, tAOF, tAOFPD and tADC are provided in the following table and subsequent figures.
Symbol
Begin Point Definition
End Point Definition
Figure
Rising edge of CK - /CK defined by the end
point of ODTLon
tAON
Extrapolated point at VSSQ
Figure a)
Rising edge of CK - /CK with ODT being first
registered high
Rising edge of CK - /CK defined by the end
point of ODTLoff
tAONPD
tAOF
Extrapolated point at VSSQ
Figure b)
End point: Extrapolated point at VRTT_Nom Figure c)
Rising edge of CK - /CK with ODT being first
registered low
Rising edge of CK - /CK defined by the end
point of ODTLcnw, ODTLcwn4 or ODTLcwn8
tAOFPD
tADC
End point: Extrapolated point at VRTT_Nom Figure d)
End point: Extrapolated point at VRTT_WR
Figure e)
and VRTT_Nom respectively
Reference Settings for ODT Timing Measurements
Measurement reference settings are provided in the following Table.
Measured Parameter RTT_Nom Setting
RTT_WR Setting
VSW1 [V]
VSW2 [V]
0.10
Note
tAON
RZQ/4
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
RZQ/2
0.05
RZQ/12
RZQ/4
0.10
0.20
tAONPD
tAOF
0.05
0.10
RZQ/12
RZQ/4
0.10
0.20
0.05
0.10
RZQ/12
RZQ/4
0.10
0.20
tAOFPD
tADC
0.05
0.10
RZQ/12
RZQ/12
0.10
0.20
0.20
0.30
Begin point: Rising edge of CK - /CK
defined by the end point of ODTLon
CK
VTT
/CK
tAON
tSW2
tSW1
DQ, DM
DQS, /DQS
VSW2
TDQS, /TDQS
VSW1
VSSQ
VSSQ
End point: Extrapolated point at VSSQ
a) Definition of tAON
Data Sheet E1248E40 (Ver. 4.0)
29
ELPIDA [ ELPIDA MEMORY ]
