MT47H64M16HR-3 IT:HTR Micron Technology Inc, MT47H64M16HR-3 IT:HTR Datasheet - Page 99
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MT47H64M16HR-3 IT:HTR
Manufacturer Part Number
MT47H64M16HR-3 IT:HTR
Description
Manufacturer
Micron Technology Inc
Type
DDR2 SDRAMr
Specifications of MT47H64M16HR-3 IT:HTR
Organization
64Mx16
Density
1Gb
Address Bus
16b
Access Time (max)
450ps
Maximum Clock Rate
667MHz
Operating Supply Voltage (typ)
1.8V
Package Type
FBGA
Operating Temp Range
-40C to 85C
Operating Supply Voltage (max)
1.9V
Operating Supply Voltage (min)
1.7V
Supply Current
135mA
Pin Count
84
Mounting
Surface Mount
Operating Temperature Classification
Industrial
Lead Free Status / Rohs Status
Compliant
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Figure 48: READ Interrupted by READ
Figure 49: READ-to-WRITE
READ with Precharge
PDF: 09005aef821ae8bf
1GbDDR2.pdf – Rev. W 7/11 EN
DQS, DQS#
DQS, DQS#
Command
Command
Address
CK#
A10
CK#
DQ
DQ
CK
CK
READ 1
Valid 4
ACT n
T0
T0
Notes:
Notes:
READ n
T1
t CCD
NOP 2
T1
CL = 3 (AL = 0)
t RCD = 3
A READ burst may be followed by a PRECHARGE command to the same bank, provided
auto precharge is not activated. The minimum READ-to-PRECHARGE command spac-
ing to the same bank has two requirements that must be satisfied: AL + BL/2 clocks and
t
prefetch of a READ command to the PRECHARGE command. For BL = 4, this is the time
from the actual READ (AL after the READ command) to PRECHARGE command. For
BL = 8, this is the time from AL + 2 × CK after the READ-to-PRECHARGE command. Fol-
RTP.
1. BL = 8 required; auto precharge must be disabled (A10 = LOW).
2. NOP or COMMAND INHIBIT commands are valid. PRECHARGE command cannot be is-
3. Interrupting READ command must be issued exactly 2 ×
4. READ command can be issued to any valid bank and row address (READ command at T0
5. Auto precharge can be either enabled (A10 = HIGH) or disabled (A10 = LOW) by the in-
6. Example shown uses AL = 0; CL = 3, BL = 8, shown with nominal
1. BL = 4; CL = 3; AL = 2.
2. Shown with nominal
AL = 2
NOP
T2
sued to banks used for READs at T0 and T2.
and T2 can be either same bank or different bank).
terrupting READ command.
t
t
RTP is the minimum time from the rising clock edge that initiates the last 4-bit
DQSQ.
READ 3
Valid 5
Valid 4
T2
NOP
T3
RL = 5
NOP 2
T3
CL = 3 (AL = 0)
DO
NOP
T4
CL = 3
DO
t
AC,
Valid
T4
WRITE
DO
99
t
T5
DQSCK, and
DO
Valid
T5
NOP
T6
Micron Technology, Inc. reserves the right to change products or specifications without notice.
DO
DO
n
t
DQSQ.
n + 1
DO
WL = RL - 1 = 4
DO
NOP
Valid
T7
1Gb: x4, x8, x16 DDR2 SDRAM
T6
n + 2
DO
DO
n + 3
DO
DO
NOP
T8
Valid
T7
t
CK from previous READ.
DO
Transitioning Data
Transitioning Data
2007 Micron Technology, Inc. All rights reserved.
NOP
T9
DI
n
DO
t
AC,
Valid
T8
n + 1
DI
DO
t
DQSCK, and
NOP
T10
n + 2
DI
DO
n + 3
Valid
DI
T9
Don’t Care
Don’t Care
NOP
T11
READ
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