MT48LC16M16LFFG Micron Technology Inc, MT48LC16M16LFFG Datasheet - Page 45

• Manufacturer Part Number: MT48LC16M16LFFG
• Manufacturer: Micron Technology Inc

Specifications of MT48LC16M16LFFG

• Lead Free Status / Rohs Status: Not Compliant

NOTE: 1. No maximum time limit for Self Refresh mode.
TIMING PARAMETERS
*CAS latency indicated in parentheses.
256Mb: x16 Mobile SDRAM
MobileRamY26L_B.p65 – Pub. 04/03
SYMBOL*
t
t
t
t
t
t
t
AH
AS
CH
CL
CK (3)
CK (2)
CK (1)
2.
3. As a general rule, any time Self Refresh is exited, the DRAM may not re-enter the Self Refresh Mode until all rows
DQML, DQMH
t
have been refreshed via the Auto Refresh command at the distributed refresh rate,
following exception is allowed. Self Refresh mode may be re-entered any time after exiting, provided all of the
following conditions are met:
XSR requires minimum of two clocks regardless of frequency and timing.
COMMAND
a. The DRAM had been in the Self Refresh Mode for a minimum of 64ms prior to exiting.
b.
c. At least two Auto Refresh commands are performed during each 7.81µs interval while the DRAM remains out of
BA0, BA1
A0-A12
t
Self Refresh mode.
XSR is not violated.
DQM/
CLK
CKE
A10
DQ
High-Z
Precharge all
t CKS
active banks
t CMS
t
SINGLE BANK
AS
PRECHARGE
ALL BANKS
BANK(S)
T0
MIN
2.5
10
20
t CKH
1
3
3
8
t CMH
t
AH
t CK
-8
MAX
t RP
T1
NOP
MIN
2.5
10
12
25
t CH
1
3
3
Enter self refresh mode
-10
MAX
SELF REFRESH MODE
t CKS
t CL
REFRESH
AUTO
CLK stable prior to exiting
T2
UNITS
ns
ns
ns
ns
ns
ns
ns
self refresh mode
> t RAS
t
RAS(MAX) applies to non-Self Refresh mode.
(
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(
1
(
45
)
(
)
)
3
SYMBOL*
t
t
t
t
t
t
t
CKH
CKS
CMH
CMS
RAS
RP
XSR
(Restart refresh time base)
Exit self refresh mode
Tn + 1
Micron Technology, Inc., reserves the right to change products or specifications without notice.
t XSR
NOP
(
(
(
(
(
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(
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2
)
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)
t CKS
To + 1
3
t
REF, or faster. However, the
MIN
2.5
2.5
48
20
80
1
1
MOBILE SDRAM
-8
120,000
©2003 Micron Technology, Inc. All rights reserved.
MAX
To + 2
256Mb: x16
REFRESH
AUTO
PRELIMINARY
MIN
DON’T CARE
100
2.5
2.5
50
20
1
1
-10
120,000
MAX
UNITS
ns
ns
ns
ns
ns
ns
ns