MT41J256M8 Datasheet, PDF (80/211 Pages) Micron Technology – MT41J512M4 – 64 Meg x 4 x 8 Banks

Table 56: Electrical Characteristics and AC Operating Conditions (Continued)
Notes 1–8 apply to the entire table
DDR3-800
DDR3-1066
DDR3-1333
DDR3-1600
Parameter
Symbol Min Max Min Max Min Max Min Max
Exit self refresh to commands not requiring a
t_XS
locked DLL
MIN = greater of 5CK or ^tRFC + 10ns; MAX = n/a
Exit self refresh to commands requiring a
locked DLL
t_XSDLL
MIN = ^tDLLK (MIN); MAX = n/a
Minimum CKE low pulse width for self re-
fresh entry to self refresh exit timing
t_CKESR
MIN = ^tCKE (MIN) + CK; MAX = n/a
Valid clocks after self refresh entry or power- ^tCKSRE
down entry
MIN = greater of 5CK or 10ns; MAX = n/a
Valid clocks before self refresh exit,
power-down exit, or reset exit
t_CKSRX
MIN = greater of 5CK or 10ns; MAX = n/a
Power-Down Timing
CKE MIN pulse width
t_{CKE (MIN) Greater of 3CK Greater of 3CK Greater of 3CK Greater of 3CK}
or 7.5ns
or 5.625ns
or 5.625ns
or 5ns
Command pass disable delay
t_CPDED
MIN = 1; MAX = n/a
Power-down entry to power-down exit tim-
t_PD
ing
MIN = ^tCKE (MIN); MAX = 9 * tREFI
Begin power-down period prior to CKE
registered HIGH
t_ANPD
WL - 1CK
Power-down entry period: ODT either
synchronous or asynchronous
PDE
Greater of ^tANPD or ^tRFC - REFRESH command to CKE LOW time
Power-down exit period: ODT either
PDX
synchronous or asynchronous
t_{ANPD +} t_XPDLL
Power-Down Entry Minimum Timing
ACTIVATE command to power-down entry ^tACTPDEN
MIN = 1
PRECHARGE/PRECHARGE ALL command to
power-down entry
t_PRPDEN
MIN = 1
REFRESH command to power-down entry
t_REFPDEN
MIN = 1
MRS command to power-down entry
t_MRSPDEN
MIN = ^tMOD (MIN)
READ/READ with auto precharge command
to power-down entry
t_RDPDEN
MIN = RL + 4 + 1
WRITE command to
power-down entry
BL8 (OTF, MRS)
BC4OTF
t_WRPDEN
MIN = WL + 4 + ^tWR/^tCK (AVG)
BC4MRS
t_WRPDEN
MIN = WL + 2 + ^tWR/^tCK (AVG)
Unit Notes
CK
CK
28
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
37
CK
CK
CK
CK