MT47H64M16HR-25:G TR Micron Technology Inc, MT47H64M16HR-25:G TR Datasheet - Page 115
MT47H64M16HR-25:G TR
Manufacturer Part Number
MT47H64M16HR-25:G TR
Description
Manufacturer
Micron Technology Inc
Type
DDR2 SDRAMr
Datasheet
1.MT47H64M16HR-25G_TR.pdf
(134 pages)
Specifications of MT47H64M16HR-25:G TR
Organization
64Mx16
Density
1Gb
Address Bus
16b
Access Time (max)
400ps
Maximum Clock Rate
800MHz
Operating Supply Voltage (typ)
1.8V
Package Type
FBGA
Operating Temp Range
0C to 85C
Operating Supply Voltage (max)
1.9V
Operating Supply Voltage (min)
1.7V
Supply Current
320mA
Pin Count
84
Mounting
Surface Mount
Operating Temperature Classification
Commercial
Lead Free Status / Rohs Status
Compliant
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REFRESH
Figure 67: Refresh Mode
PDF: 09005aef821ae8bf
1GbDDR2.pdf – Rev. V 6/10 EN
DQS, DQS# 4
Command
Address
Bank
DM 4
DQ 4
CK#
CKE
A10
CK
NOP 1
T0
Notes:
One bank
All banks
Bank(s)
PRE
T1
The commercial temperature DDR2 SDRAM requires REFRESH cycles at an average in-
terval of 7.8125µs (MAX) and all rows in all banks must be refreshed at least once every
64ms. The refresh period begins when the REFRESH command is registered and ends
t
ceeds +85°C.
RFC (MIN) later. The average interval must be reduced to 3.9µs (MAX) when T
3
1. NOP commands are shown for ease of illustration; other valid commands may be possi-
2. The second REFRESH is not required and is only shown as an example of two back-to-
3. “Don’t Care” if A10 is HIGH at this point; A10 must be HIGH if more than one bank is
4. DM, DQ, and DQS signals are all “Don’t Care”/High-Z for operations shown.
t CK
ble at these times. CKE must be active during clock positive transitions.
back REFRESH commands.
active (must precharge all active banks).
NOP 1
T2
t CH
t RP
t CL
NOP 1
T3
115
REF
T4
t RFC (MIN)
NOP 1
Micron Technology, Inc. reserves the right to change products or specifications without notice.
Ta0
1Gb: x4, x8, x16 DDR2 SDRAM
REF 2
Ta1
Indicates a break in
time scale
NOP 1
Tb0
© 2004 Micron Technology, Inc. All rights reserved.
t RFC 2
NOP 1
Tb1
Don’t Care
REFRESH
C
ex-
Tb2
ACT
RA
RA
BA
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