512Mb : 32 Me g x 16, 16 Me g x 32 Mo b ile SDRAM
Re g ist e r De fin it io n
Ext e n d e d Mo d e Re g ist e r (EMR)
The EMR controls the functions beyond those controlled by the mode register. These
additional functions are special features of the mobile device that helps reduce overall
system power consumption. They include temperature-compensated self refresh
(TCSR) control, partial-array self refresh (PASR), and output drive strength.
The EMR is programmed via the MODE REGISTER SET command (BA1 = 1, BA0 = 0) and
retains the stored information until it is programmed again or the device loses power.
Fig u re 7:
CAS La t e n cy
T0
T1
T2
T3
CLK
COMMAND
READ
NOP
t
NOP
t
LZ
OH
DOUT
DQ
t
AC
CL = 2
T0
T1
T2
T3
T4
CLK
COMMAND
READ
NOP
NOP
NOP
t
t
LZ
OH
DOUT
DQ
t
AC
CL = 3
DON’T CARE
UNDEFINED
Notes: 1. Each READ command may be to any bank. DQM is LOW.
2. For CL = 2, DQM should be taken LOW at READ command. For CL = 3, DQM should be taken
LOW one cycle after the READ command.
PDF: 09005aef81ca5de4/Source: 09005aef81ca5e03
MT48H32M16LF_1.fm - Rev. H 6/07 EN
Micron Technology, Inc., reserves the right to change products or specifications without notice.
16
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