MT47H64M16BT-37EA Datasheet, PDF (39/134 Pages) Micron Technology – DDR2 SDRAM

Table 12: AC Operating Specifications and Conditions (Continued)
Not all speed grades listed may be supported for this device; refer to the title page for speeds supported; Notes: 1–5 apply to the entire table;
V_DDQ = +1.8V ±0.1V, V_DD = +1.8V ±0.1V
AC Characteristics
-187E
-25E
-25
-3E
-3
-37E
-5E
Parameter
Symbol Min Max Min Max Min Max Min Max Min Max Min Max Min Max Units Notes
Exit SELF REFRESH ^tXSNR
MIN limit = ^tRFC (MIN) + 10
ns
to nonREAD
MAX limit = n/a
command
Exit SELF REFRESH ^tXSRD
to READ command
MIN limit = 200
MAX limit = n/a
t_CK
18
Exit SELF REFRESH
timing reference
t_ISXR
MIN limit = ^tIS
MAX limit = n/a
ps 33, 43
Exit active MR12 ^tXARD
3
–
2
–
2
–
2
–
2
–
2
–
2
–
t_CK
18
power-
=0
down to
READ
command
MR12
=1
10 - AL – 8 - AL – 8 - AL – 7 - AL – 7 - AL – 6 - AL – 6 - AL – ^tCK 18
Exit precharge
t_XP
3
–
2
–
2
–
2
–
2
–
2
–
2
–
t_CK
18
power-down and
active power-down
to any
nonREAD
command
CKE MIN HIGH/
LOW time
t_CKE
MIN = 3
MAX = n/a
t_{CK 18, 44}