MT40A1G8WE-075E Datasheet, PDF (349/358 Pages) Micron Technology – Refresh time of 8192-cycle at TC temperature range

Table 158: Electrical Characteristics and AC Timing Parameters (Continued)
Parameter
CMD, ADDR hold time
to CK_t, CK_c refer-
enced to V_IH(DC) and
VIL(DC) ^levels
Base
V_REFCA
CTRL, ADDR pulse width for each input
ACTIVATE to internal READ or WRITE de-
lay
PRECHARGE command period
ACTIVATE-to-PRECHARGE command peri-
od
ACTIVATE-to-ACTIVATE or REF command
period
ACTIVATE-to-ACTIVATE command period
to different bank groups for 1/2KB page
size
ACTIVATE-to-ACTIVATE command period
to different bank groups for 1KB page
size
ACTIVATE-to-ACTIVATE command period
to different bank groups for 2KB page
size
ACTIVATE-to-ACTIVATE command period
to same bank groups for 1/2KB page size
ACTIVATE-to-ACTIVATE command period
to same bank groups for 1KB page size
ACTIVATE-to-ACTIVATE command period
to same bank groups for 2KB page size
Four ACTIVATE windows for 1/2KB page
size
Four ACTIVATE windows for 1KB page
size
Four ACTIVATE windows for 2KB page
size
Symbol
t_IH
t_IHVREF
t_IPW
t_RCD
t_RP
t_RAS
t_RC
t_{RRD_S}
(1/2KB)
t_{RRD_S}
(1KB)
t_{RRD_S}
(2KB)
t_{RRD_L}
(1/2KB)
t_{RRD_L}
(1KB)
t_{RRD_L}
(2KB)
t_FAW
(1/2KB)
t_FAW
(1KB)
t_FAW
(2KB)
DDR4-2666
Min Max
80
–
145
–
DDR4-2933
Min Max
73
–
138
–
DDR4-3200
Min Max
65
–
130
–
Reserved
Min Max
385
–
365
–
350
–
See Speed Bin Tables for ^tRCD
See Speed Bin Tables for ^tRP
See Speed Bin Tables for ^tRAS
See Speed Bin Tables for ^tRC
MIN = greater MIN = greater MIN = greater
of 4CK or 3.0ns of 4CK or 2.7ns of 4CK or 2.5ns
MIN = greater MIN = greater MIN = greater
of 4CK or 3.0ns of 4CK or 2.7ns of 4CK or 2.5ns
MIN = greater MIN = greater MIN = greater
of 4CK or 5.3ns of 4CK or 5.3ns of 4CK or 5.3ns
MIN = greater MIN = greater MIN = greater
of 4CK or 4.9ns of 4CK or 4.9ns of 4CK or 4.9ns
MIN = greater MIN = greater MIN = greater
of 4CK or 4.9ns of 4CK or 4.9ns of 4CK or 4.9ns
MIN = greater MIN = greater MIN = greater
of 4CK or 6.4ns of 4CK or 6.4ns of 4CK or 6.4ns
MIN = greater MIN = greater MIN = greater
of 16CK or 12ns of 16CK or of 16CK or 10ns
10.9ns
MIN = greater MIN = greater MIN = greater
of 20CK or 21ns of 20CK or 21ns of 20CK or 21ns
MIN = greater MIN = greater MIN = greater
of 28CK or 30ns of 28CK or 30ns of 28CK or 30ns
Unit
ps
ps
ps
ns
ns
ns
ns
CK
CK
CK
CK
CK
CK
ns
ns
ns
Notes
13
13
1
1
1
1
1
1