MT40A512M8RH-083E Datasheet, PDF (158/365 Pages) Micron Technology – Programmable data strobe preambles

4Gb: x4, x8, x16 DDR4 SDRAM
Power-Down Mode
Figure 95: REFRESH Command to Power-Down Entry
T0
T1
T2
Ta0
CK_c
CK_t
Command
REF
DES
DES
Address
CKE
Valid
t_IS
t_CPDED
t_PD
t_REFPDEN
Tb0
Tb1
DES
DES
t_CKE
Valid
Time Break
Don’t Care
Figure 96: Active Command to Power-Down Entry
T0
T1
T2
Ta0
CK_c
CK_t
Command
ACT
DES
DES
Address
CKE
Valid
t_CPDED
t_IS
t_PD
t_ACTPDEN
Tb0
Tb1
DES
DES
t_CKE
Valid
Time Break
Don’t Care
09005aef84af6dd0
4gb_ddr4_dram.pdf - Rev. G 1/17 EN
158
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