MT40A256M16GE-075E Datasheet, PDF (122/365 Pages) Micron Technology – Temperature controlled refresh (TCR)

Figure 66: V_REF Step: Single Step Size Increment Case
V
REF
Voltage
Step size
4Gb: x4, x8, x16 DDR4 SDRAM
V_REFDQ Calibration
V_{REF,val_tol}
V
REF
(V_DDQ(DC))
t1
Figure 67: V_REF Step: Single Step Size Decrement Case
V_REF
Voltage
Step size
Time
t1
V_{REF,val_tol}
V
REF
(V_DDQ(DC))
Time
09005aef84af6dd0
4gb_ddr4_dram.pdf - Rev. G 1/17 EN
122
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