MT40A1G8WE-083EAAT Datasheet, PDF (282/358 Pages) Micron Technology – Automotive DDR4 SDRAM

8Gb: x8, x16 Automotive DDR4 SDRAM
Electrical Characteristics – Overshoot and Undershoot Specifi-
cations
Electrical Characteristics – Overshoot and Undershoot Specifications
Address, Command, and Control Overshoot and Undershoot Specifications
Table 110: ADDR, CMD, CNTL Overshoot and Undershoot/Specifications
Description
DDR4- DDR4- DDR4- DDR4- DDR4- DDR4- DDR4-
1600 1866 2133 2400 2666 2933 3200
Address and control pins (A[17:0], BG[1:0], BA[1:0], CS_n, RAS_n, CAS_n, WE_n, CKE, ODT, C2-0)
Area A: Maximum peak amplitude above V_DD
absolute MAX
0.06 0.06
0.06
0.06 0.06 0.06 0.06
Area B: Amplitude allowed between V_DD and
V_DD absolute MAX
Area C: Maximum peak amplitude allowed for
undershoot below V_SS
Area A maximum overshoot area per 1^tCK
0.24 0.24
0.30 0.30
0.0083 0.0071
0.24
0.30
0.0062
0.24 0.24 0.24 0.24
0.30 0.30 0.30 0.30
0.0055 0.0055 0.0055 0.0055
Area B maximum overshoot area per 1^tCK
0.2550 0.2185 0.1914 0.1699 0.1699 0.1699 0.1699
Area C maximum undershoot area per 1^tCK
0.2644 0.2265 0.1984 0.1762 0.1762 0.1762 0.1762
Unit
V
V
V
V/ns
V/ns
V/ns
Figure 222: ADDR, CMD, CNTL Overshoot and Undershoot Definition
Absolute MAX overshoot
V_DD absolute MAX
V_DD
V_SS
A
B
1^tCK
C
Overshoot area above V_DD absolute MAX
Overshoot area below V_DD absolute MAX
and above V_DD MAX
Undershoot area below V_SS
Clock Overshoot and Undershoot Specifications
Table 111: CK Overshoot and Undershoot/ Specifications
Description
CLK_t, CLK_n
Area A: Maximum peak amplitude above V_DD
absolute MAX
Area B: Amplitude allowed between V_DD and
V_DD absolute MAX
Area C: Maximum peak amplitude allowed for
undershoot below V_SS
Area A maximum overshoot area per 1UI
Area B maximum overshoot area per 1UI
DDR4- DDR4- DDR4- DDR4- DDR4- DDR4- DDR4-
1600 1866 2133 2400 2666 2933 3200 Unit
0.06 0.06 0.06 0.06 0.06 0.06 0.06
V
0.24 0.24 0.24 0.24 0.24 0.24 0.24
V
0.30 0.30 0.30 0.30 0.30 0.30 0.30
V
0.0038 0.0032 0.0028 0.0025 0.0025 0.0025 0.0025 V/ns
0.1125 0.0964 0.0844 0.0750 0.0750 0.0750 0.0750 V/ns
CCMTD-1406124318-10419
8gb_auto_ddr4_dram.pdf - Rev. C 3/17 EN
282
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