MT41J64M16JT-15E IT:G Micron Technology Inc, MT41J64M16JT-15E IT:G Datasheet - Page 130
MT41J64M16JT-15E IT:G
Manufacturer Part Number
MT41J64M16JT-15E IT:G
Description
Manufacturer
Micron Technology Inc
Type
DDR3 SDRAMr
Datasheet
1.MT41J64M16JT-15E_ITG.pdf
(208 pages)
Specifications of MT41J64M16JT-15E IT:G
Organization
64Mx16
Density
1Gb
Address Bus
16b
Maximum Clock Rate
1.333GHz
Operating Supply Voltage (typ)
1.5V
Package Type
FBGA
Operating Temp Range
-40C to 95C
Operating Supply Voltage (max)
1.575V
Operating Supply Voltage (min)
1.425V
Supply Current
355mA
Pin Count
96
Mounting
Surface Mount
Operating Temperature Classification
Industrial
Lead Free Status / Rohs Status
Supplier Unconfirmed
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Mode Registers
Figure 51: MRS to MRS Command Timing (
PDF: 09005aef826aa906
1Gb_DDR3_SDRAM.pdf – Rev. J 05/10 EN
Notes:
Mode registers (MR0–MR3) are used to define various modes of programmable opera-
tions of the DDR3 SDRAM. A mode register is programmed via the mode register set
(MRS) command during initialization, and it retains the stored information (except for
MR0[8] which is self-clearing) until it is either reprogrammed, RESET# goes LOW, or
until the device loses power.
Contents of a mode register can be altered by reexecuting the MRS command. If the
user chooses to modify only a subset of the mode register’s variables, all variables must
be programmed when the MRS command is issued. Reprogramming the mode register
will not alter the contents of the memory array, provided it is performed correctly.
The MRS command can only be issued (or reissued) when all banks are idle and in the
precharged state (
mand has been issued, two parameters must be satisfied:
ler must wait
Command
The controller must also wait
ing NOP and DES). The DRAM requires
with the exception of DLL RESET, which requires additional time. Until
satisfied, the updated features are to be assumed unavailable.
Address
1. Prior to issuing the MRS command, all banks must be idle and precharged,
2.
3. CKE must be registered HIGH from the MRS command until
4. For a CAS latency change,
CKE 3
CK#
must be satisfied, and no data bursts can be in progress.
t
Down Mode (page 177)).
CK
MRD specifies the MRS to MRS command minimum cycle time.
MRS 1
Valid
T0
t
MRD before initiating any subsequent MRS commands.
t
RP is satisfied and no data bursts are in progress). After an MRS com-
t
MRD)
NOP
T1
130
t
t
MOD before initiating any nonMRS commands (exclud-
XPDLL timing must be met before any nonMRS command.
NOP
Micron Technology, Inc. reserves the right to change products or specifications without notice.
T2
t
MOD in order to update the requested features,
t MRD
1Gb: x4, x8, x16 DDR3 SDRAM
NOP
Ta0
Indicates A Break in
Time Scale
t
MRD and
t
MRSPDEN (MIN) (see Power-
© 2006 Micron Technology, Inc. All rights reserved.
NOP
Ta1
Mode Registers
t
MOD. The control-
t
MOD has been
t
RP (MIN)
Don’t Care
MRS 2
Valid
Ta2
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