MT48LC8M16A2P-6A Micron Technology Inc, MT48LC8M16A2P-6A Datasheet - Page 30
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MT48LC8M16A2P-6A
Manufacturer Part Number
MT48LC8M16A2P-6A
Description
Manufacturer
Micron Technology Inc
Type
SDRAMr
Datasheet
1.MT48LC8M16A2P-6A.pdf
(74 pages)
Specifications of MT48LC8M16A2P-6A
Organization
8Mx16
Density
128Mb
Address Bus
14b
Access Time (max)
5.4ns
Maximum Clock Rate
167MHz
Operating Supply Voltage (typ)
3.3V
Package Type
TSOP-II
Operating Temp Range
0C to 70C
Operating Supply Voltage (max)
3.6V
Operating Supply Voltage (min)
3V
Supply Current
165mA
Pin Count
54
Mounting
Surface Mount
Operating Temperature Classification
Commercial
Lead Free Status / Rohs Status
Compliant
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Figure 17:
PDF: 09005aef8091e66d/Source: 09005aef8091e625
128MSDRAM_2.fm - Rev. N 1/09 EN
READ-to-PRECHARGE
Notes:
desired data element is valid, where x = CL - 1. This is shown in Figure 17 for each
possible CL; data element n + 3 is either the last of a burst of four or the last desired of a
longer burst. Following the PRECHARGE command, a subsequent command to the
same bank cannot be issued until
hidden during the access of the last data element(s).
In the case of a fixed-length burst being executed to completion, a PRECHARGE
command issued at the optimum time (as described above) provides the same operation
that would result from the same fixed-length burst with auto precharge. The disadvan-
tage of the PRECHARGE command is that it requires that the command and address
buses be available at the appropriate time to issue the command; the advantage of the
PRECHARGE command is that it can be used to truncate fixed-length or full-page bursts.
Full-page READ bursts can be truncated with the BURST TERMINATE command, and
fixed-length READ bursts may be truncated with a BURST TERMINATE command,
provided that auto precharge was not activated. The BURST TERMINATE command
should be issued x cycles before the clock edge at which the last desired data element is
valid, where x = CL - 1. This is shown in Figure 18 on page 31 for each possible CL; data
element n + 3 is the last desired data element of a longer burst.
COMMAND
COMMAND
1. DQM is LOW.
ADDRESS
ADDRESS
CLK
CLK
DQ
DQ
BANK a,
BANK a,
COL n
COL n
T0
T0
READ
READ
CL = 2
T1
T1
NOP
NOP
CL = 3
30
T2
T2
NOP
NOP
D
t
OUT
RP is met. Note that part of the row precharge time is
n
Micron Technology, Inc., reserves the right to change products or specifications without notice.
T3
T3
NOP
NOP
n + 1
D
D
OUT
OUT
n
TRANSITIONING DATA
PRECHARGE
PRECHARGE
(a or all)
(a or all)
T4
BANK
BANK
T4
X = 1 cycle
n + 2
D
n + 1
D
OUT
OUT
128Mb: x4, x8, x16 SDRAM
X = 2 cycles
T5
T5
NOP
NOP
n + 2
n + 3
D
D
OUT
OUT
t RP
t RP
©1999 Micron Technology, Inc. All rights reserved.
T6
T6
NOP
NOP
n + 3
D
OUT
DON’T CARE
Operations
BANK a,
BANK a,
ACTIVE
ACTIVE
T7
T7
ROW
ROW