MT40A1G8WE-083EAAT Datasheet, PDF (276/358 Pages) Micron Technology – Automotive DDR4 SDRAM

8Gb: x8, x16 Automotive DDR4 SDRAM
Electrical Characteristics – AC and DC Differential Input Meas-
urement Levels
Figure 217: V_IX(CK) Definition
V_DD
CK_c
V_IX(CK)
V_IX(CK)
V_IX(CK)
V_DD/2
V_SEH
V_SEL
CK_t
V_SS
Table 102: Cross Point Voltage For CK Differential Input Signals at DDR4-1600 through DDR4-2400
Parameter
Differential
input cross
point volt-
age relative
to V_DD/2 for
CK_t, CK_c
Sym
Input Level
V_IX(CK)
V_SEH > V_DD/2 + 145mV
V_DD/2 + 100mV ≤ V_SEH ≤ V_DD/2
+ 145mV
V_DD/2 - 145mV ≤ V_SEL ≤ V_DD/2 -
100mV
V_SEL ≤ V_DD/2 - 145mV
DDR4-1600, 1866, 2133
Min
Max
N/A
120mV
N/A
(V_SEH - V_DD/2) -
25mV
–(V_DD/2-V_SEL)
N/A
+25mV
–120mV
N/A
DDR4-2400
Min
Max
N/A
120mV
N/A
(V_SEH - V_DD/2) -
25mV
–(V_DD/2-V_SEL) +
N/A
25mV
–120mV
N/A
Table 103: Cross Point Voltage For CK Differential Input Signals at DDR4-2666 through DDR4-3200
Parameter
Differential
input cross
point volt-
age relative
to V_DD/2 for
CK_t, CK_c
DDR4-2666
Sym
Input Level
Min
Max
V_IX(CK)
V_SEH > V_DD/2 + 135mV
N/A
V_DD/2 + 90mV ≤ V_SEH ≤ V_DD/2 +
N/A
135mV
110mV
(V_SEH - V_DD/2) -
30mV
V_DD/2 - 135mV ≤ V_SEL ≤ V_DD/2 - –(V_DD/2-V_SEL) +
N/A
90mV
30mV
V_SEL ≤ V_DD/2 - 135mV
–110mV
N/A
DDR4-2933, 3200
Min
Max
N/A
110mV
N/A
(V_SEH - V_DD/2) -
30mV
–(V_DD/2-V_SEL) +
N/A
30mV
–110mV
N/A
CCMTD-1406124318-10419
8gb_auto_ddr4_dram.pdf - Rev. C 3/17 EN
276
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