MT40A1G8WE-083EAAT Datasheet, PDF (274/358 Pages) Micron Technology – Automotive DDR4 SDRAM

8Gb: x8, x16 Automotive DDR4 SDRAM
Electrical Characteristics – AC and DC Differential Input Meas-
urement Levels
measure setup time. For single-ended components of differential signals the require-
ment to reach V_SEL,max/V_SEH,min has no bearing on timing, but adds a restriction on the
common mode characteristics of these signals.
Figure 215: Single-Ended Requirements for CK
V_DD or V_DDQ
V_SEH,min
V_DD/2 or V_DDQ/2
V_SEL,max
V_SS or V_SSQ
V_SEH
CK
V_SEL
Table 100: Single-Ended Requirements for CK
Parameter
Single-ended high level for CK_t,
CK_c
Single-ended low level for CK_t, CK_c
Symbol
V_SEH
V_SEL
DDR4-1600 / 1866 /
2133 / 2400
Min
Max
V_DD/2 +
0.100
Note 3
Note 3
V_DD/2 -
0.100
DDR4-2666 / 2933 /
3200
Min
Max
V_DD/2 +
0.90
Note 3
Note 3 V_DD/2 - 0.90
Unit
V
V
Notes
1, 2
1, 2
Notes:
1. For CK_t, CK_c use V_IH(AC) and V_IL(AC) of ADD/CMD and V_REFCA.
2. ADDR/CMD V_IH(AC) and V_IL(AC) based on V_REFCA.
3. These values are not defined; however, the differential signal (CK_t, CK_c) need to be
within the respective limits, V_IH(DC)max and V_IL(DC)min for single-ended signals as well as
the limitations for overshoot and undershoot.
Slew Rate Definitions for CK Differential Input Signals
Table 101: CK Differential Input Slew Rate Definition
Description
Differential input slew rate for rising edge
Measured
From
To
V_IL,diff,max
V_IH,diff,min
Defined by
|V_IH,diff,min - V_IL,diff,maxΔTR_diff
CCMTD-1406124318-10419
8gb_auto_ddr4_dram.pdf - Rev. C 3/17 EN
274
Micron Technology, Inc. reserves the right to change products or specifications without notice.
© 2016 Micron Technology, Inc. All rights reserved.