DDR3(L) 4Gb SDRAM
NT5CB(C)512M8DN / NT5CB(C)256M16DP
Single-ended levels for CK, DQS, DQSL, DQSU, , , L, or U
DDR3(L)-800, 1066, 1333, & 1600
Symbol
Parameter
Unit
Notes
Min.
(VDDQ/2) + 0.175
(VDDQ/2) + 0.175
note3
Max.
note3
Single-ended high-level for strobes
Single-ended high-level for CK,
Single-ended low-level for strobes
Single-ended Low-level for CK,
1, 2
1, 2
1, 2
1, 2
V
V
V
V
VSEH
note3
(VDDQ/2) - 0.175
(VDDQ/2) - 0.175
VSEL
Note:
note3
1. For CK, use VIH/VIL(ac) of ADD/CMD; for strobes (DQS, DQSL, DQSU, CK, , L, or U) use VIH/VIL(ac) of DQs.
2. VIH(ac)/VIL(ac) for DQs is based on VREFDQ; VIH(ac)/VIL(ac) for ADD/CMD is based on VREFCA; if a reduced ac-high or ac-low
level is used for a signal group, then the reduced level applies also there.
3. These values are not defined, however the single-ended signals CK, , DQS, , DQSL, L, DQSU, U need to be within
the respective limits (VIH(dc)max, VIL(dc)min) for single-ended signals as well as limitations for overshoot and undershoot.
Version 2.3
02/2017
102
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