EDJ1108BABG, EDJ1116BABG
6. Measurement Definition for VM and ∆VM:
Measure voltage (VM) at test pin (midpoint) with no load:
2× VM
∆VM =
-1 ×100
VDDQ
ODT Temperature and Voltage Sensitivity
If temperature and/or voltage change after calibration, the tolerance limits widen according to the table ODT
Sensitivity Definition and ODT Voltage and Temperature Sensitivity.
∆T = T − T (@calibration); ∆V= VDDQ − VDDQ (@calibration); VDD = VDDQ
Note: dRTTdT and dRTTdV are not subject to production test but are verified by design and characterization.
[ODT Sensitivity Definition]
min.
max.
Unit
RTT
0.9 − dRTTdT × |∆T| - dRTTdV × |∆V|
1.6 + dRTTdT×|∆T| + dRTTdV × |∆V|
RZQ/2, 4, 6, 8, 12
[ODT Voltage and Temperature Sensitivity]
min.
max.
1.5
Unit
dRTTdT
dRTTdV
0
0
%/°C
%/mV
0.15
ODT Timing Definitions
Test Load for ODT Timings
Different than for timing measurements, the reference load for ODT timings are defined in ODT Timing Reference
Load.
VDDQ
DUT
DQ
DQS,
/DQS
CK, /CK
VTT = VSSQ/2
RT =25Ω
ODT Timing Reference Load
Data Sheet E1248E40 (Ver. 4.0)
28
ELPIDA [ ELPIDA MEMORY ]
