mt46h16m16lf Micron Semiconductor Products, mt46h16m16lf Datasheet - Page 69

• Manufacturer Part Number: mt46h16m16lf
• Description: 256mb X16, X32 Mobile Ddr Sdram
• Manufacturer: Micron Semiconductor Products

Figure 41:
PDF: 09005aef82091978 / Source: 09005aef8209195b
MT46H16M16LF__2.fm - Rev. H 3/08 EN
Bank address
Command 1
(BA0, BA1)
Addresses
V
DQS
CK#
CKE
A10
DD
DM
V
DQ
CK
DD
Q
Initialize and Load Mode Registers
Notes:
LVCMOS
High level
T = 200µs
Power-up: V
NOP 2
1. PRE = PRECHARGE command; LMR = LOAD MODE REGISTER command; AR = AUTO REFRESH
2. NOP or DESELECT commands are required for at least 200µs.
3. Other valid commands are possible.
4. NOP or DESELECT commands are required during this time.
(
(
(
(
(
(
(
( (
(
(
(
(
)
(
)
(
)
(
)
(
)
(
) )
(
)
)
)
)
)
)
)
)
)
)
)
)
(
(
(
(
(
(
(
(
(
(
(
)
(
)
(
)
(
)
(
)
(
(
)
)
)
)
)
)
)
)
)
)
)
)
DD
command; ACT = ACTIVE command; RA = row address; BA = bank address.
and CK stable
t IS
T0
NOP
High-Z
High-Z
t IH
t
CH
t
CK
t
CL
All banks
t IS
PRE
T1
t IH
(
(
(
(
(
(
(
(
(
)
)
)
)
)
)
)
(
(
(
(
(
(
(
)
)
t RP 4
)
)
)
)
)
)
)
(
(
(
(
(
(
(
(
(
(
)
(
)
(
)
(
)
(
)
(
)
(
)
)
)
)
)
)
)
)
)
)
Ta0
AR
69
t RFC 4
(
(
(
)
)
(
(
(
(
(
(
(
(
(
)
)
)
)
(
)
(
)
(
)
(
)
)
)
(
)
)
)
)
(
(
(
)
(
)
(
(
(
(
(
(
(
)
)
)
)
(
)
(
)
(
)
(
)
)
)
)
)
)
)
Load standard mode register
Tb0
AR
Micron Technology, Inc., reserves the right to change products or specifications without notice.
256Mb: x16, x32 Mobile DDR SDRAM
t RFC 4
(
(
(
(
(
(
(
(
(
(
)
(
)
(
)
(
)
(
)
(
)
(
)
)
)
)
)
)
)
)
)
)
(
(
(
(
(
(
(
)
)
)
)
)
)
)
(
(
(
(
(
(
(
(
(
)
)
)
)
)
)
)
)
)
t IS
t IS
t IS
BA0 = L,
BA1 = L
CODE
CODE
Tc0
LMR
t IH
t IH
t IH
Load extended mode
t MRD 4
(
(
(
(
(
)
(
)
(
)
(
)
(
(
)
)
)
)
(
(
(
)
)
)
)
)
(
(
(
(
(
(
(
(
)
(
)
(
)
(
)
)
)
)
(
(
)
)
)
)
(
(
(
)
)
(
)
(
)
(
)
)
)
)
register
BA0 = L,
BA1 = H
CODE
CODE
Td0
LMR
©2005 Micron Technology, Inc. All rights reserved.
t MRD 4
(
(
(
(
(
(
(
)
)
)
)
)
)
)
(
(
(
(
(
(
(
(
(
)
)
)
)
)
)
)
)
)
(
(
(
(
(
(
(
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
(
)
)
)
)
)
)
)
)
)
Timing Diagrams
Te0
ACT
RA
RA
BA
(
(
(
(
(
(
)
)
)
)
)
)
(
(
(
(
(
(
(
(
(
(
)
)
)
)
)
)
)
)
)
)
(
(
(
(
(
(
(
(
)
(
)
(
)
(
)
(
)
(
)
(
(
(
)
)
)
)
)
)
)
)
)
)
Don’t Care
Tf0
NOP 3