MT40A512M8RH-075EAUT Datasheet, PDF (281/359 Pages) Micron Technology – Automotive DDR4 SDRAM

4Gb: x8, x16 Automotive DDR4 SDRAM
Electrical Characteristics – AC and DC Differential Input Meas-
urement Levels
Table 108: DDR4-1600 through DDR4-2400 Differential Input Slew Rate and Input Levels for DQS_t,
DQS_c (Continued)
Parameter
Peak differential input low voltage
DQS differential input slew rate
Symbol
V_IL,diff,peak
SRIdiff
DDR4-1600, 1866, 2133
Min
Max
V_SSQ
3.0
–186
18
DDR4-2400
Min
Max
V_SSQ
3.0
–160
18
Unit
mV
V/ns
Notes
1
4, 5
Notes:
1. Minimum and maximum limits are relative to single-ended portion and can be exceeded
within allowed overshoot and undershoot limits.
2. Differential signal rising edge from V_IL,diff,DQS to V_IH,diff,DQS must be monotonic slope.
3. Differential signal falling edge from V_IH,diff,DQS to V_IL,diff,DQS must be monotonic slope.
4. Differential input slew rate for rising edge from V_IL,diff,DQS to V_IH,diff,DQS is defined by |
V_IL,diff,min - V_IH,diff,maxΔTR_diff.
5. Differential input slew rate for falling edge from V_IH,diff,DQS to V_IL,diff,DQS is defined by |
V_IL,diff,min - V_IH,diff,maxΔTF_diff.
Table 109: DDR4-2666 through DDR4-3200 Differential Input Slew Rate and Input Levels for DQS_t,
DQS_c
Parameter
Peak differential input
high voltage
Differential input high
voltage
Differential input low
voltage
Peak differential input
low voltage
DQS differential input
slew rate
Symbol
V_IH,diff,peak
V_IH,diff,DQS
V_IL,diff,DQS
V_IL,diff,peak
SRIdiff
DDR4-2666
Min
Max
150
V_DDQ
120
–
–
–120
V_SSQ
3.0
–150
18
DDR4-2933
Min
Max
145
V_DDQ
115
–
–
–115
V_SSQ
3.0
–145
18
DDR4-3200
Min
Max
140
V_DDQ
110
–
Unit Notes
mV
1
mV 2, 3
–
–110
mV 2, 3
V_SSQ
3.0
–140
mV
1
18
V/ns 4, 5
Notes:
1. Minimum and maximum limits are relative to single-ended portion and can be exceeded
within allowed overshoot and undershoot limits.
2. Differential signal rising edge from V_IL,diff,DQS to V_IH,diff,DQS must be monotonic slope.
3. Differential signal falling edge from V_IH,diff,DQS to V_IL,diff,DQS must be monotonic slope.
4. Differential input slew rate for rising edge from V_IL,diff,DQS to V_IH,diff,DQS is defined by |
V_IL,diff,min - V_IH,diff,maxΔTR_diff.
5. Differential input slew rate for falling edge from V_IH,diff,DQS to V_IL,diff,DQS is defined by |
V_IL,diff,min - V_IH,diff,maxΔTF_diff.
CCMTD-1725822587-10418
4gb_auto_ddr4_sdram_z90b.pdf - Rev. D 01/17 EN
281
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