MT46H16M16 데이터 시트보기 (PDF) - Micron Technology
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MT46H16M16 Datasheet PDF : 79 Pages
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256Mb: x16, x32 Mobile DDR SDRAM
Electrical Specifications
Table 18: Electrical Characteristics and Recommended AC Operating Conditions
Notes: 1–6, 22 apply to all parameters in this table; notes appear on pages 63–65; VDD/VDDQ = 1.70–1.95V
-6
-75
Parameter
Access window of DQ from CK/CK#
CL = 3
CL = 2
CK high-level width
CK low-level width
Clock cycle time
CL = 3
Minimum tCKE HIGH/LOW time
CL = 2
Auto precharge write recovery + precharge time
DQ and DM input hold time relative to DQS
DQ and DM input setup time relative to DQS
DQ and DM input pulse width (for each input)
Access window of DQS from CK/CK#
CL = 3
CL = 2
DQS input HIGH pulse width
DQS input LOW pulse width
DQS–DQ skew, DQS to last DQ valid, per group, per
access
WRITE command to first DQS latching transition
DQS falling edge to CK rising - setup time
DQS falling edge from CK rising - hold time
Data valid output window (DVW)
Half clock period
Symbol
tAC(3)
tAC(2)
tCH
tCL
tCK(3)
tCK(2)
tCKE
tDAL
tDH
tDS
tDIPW
tDQSCK(3)
tDQSCK(2)
tDQSH
tDQSL
tDQSQ
tDQSS
tDSS
tDSH
n/a
tHP
Data-out High-Z window from CK/CK#
CL = 3
CL = 2
Data-out Low-Z window from CK/CK#
Address and control input hold time (fast slew rate)
Address and control input setup time (fast slew rate)
Address and control input hold time (slow slew rate)
Address and control input setup time (slow slew rate)
Address and control input pulse width
LOAD MODE REGISTER command cycle time
DQ–DQS hold, DQS to first DQ to go non-valid, per access
tHZ(3)
tHZ(2)
tLZ
tIHF
tISF
tIHS
tISS
tIPW
tMRD
tQH
Data hold skew factor
ACTIVE-to-PRECHARGE command
ACTIVE-to-ACTIVE or ACTIVE-to-AUTO REFRESH
command period
ACTIVE-to-READ or WRITE delay
Refresh period
Average periodic refresh interval (x16)
Average periodic refresh interval (x32)
AUTO REFRESH command period
PRECHARGE command period
tQHS
tRAS
tRC
tRCD
tREF
tREFI
tREFI
tRFC
tRP
Min
2.0
2.0
0.45
0.45
6
12
1
–
0.5
0.5
1.8
2.0
2.0
0.35
0.35
–
Max
5.0
6.5
0.55
0.55
–
–
–
–
–
–
–
5.0
6.5
0.6
0.6
0.5
Min
2.0
2.0
0.45
0.45
7.5
12
1
–
0.75
0.75
1.8
2.0
2.0
0.4
0.4
–
Max
6.0
6.5
0.55
0.55
–
–
–
–
–
–
–
6.0
6.5
0.6
0.6
0.6
0.75 1.25 0.75 1.25
0.2
–
0.2
–
0.2
–
tQH - tDQSQ
tCH,
–
tCL
0.2
–
tQH - tDQSQ
tCH,
–
tCL
–
5.0
–
6.0
–
6.5
–
6.5
1.0
–
1.0
–
1.1
–
1.3
–
1.1
–
1.3
–
1.2
–
1.5
–
1.2
–
1.5
–
2.6
–
2.6
–
2
tHP
- tQHS
–
2
–
–
tHP
–
- tQHS
0.65
–
0.75
42 70,000 45 70,000
60
–
75
–
18
–
22.5
–
–
64
–
64
–
7.8
–
7.8
–
15.6
–
15.6
70
–
70
–
18
–
22.5
–
Units
ns
tCK
tCK
ns
tCK
ns
ns
ns
ns
tCK
tCK
ns
tCK
tCK
tCK
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
tCK
ns
ns
ns
ns
ns
ms
µs
µs
ns
ns
Notes
24
32
19,23,31
19,23,31
33
18, 19
18
24
12, 30
12, 30
11
11
11
11
33
18, 19
25
37
37
PDF: 09005aef82091978 / Source: 09005aef8209195b
MT46H16M16LF__2.fm - Rev. H 6/08 EN
61
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©2005 Micron Technology, Inc. All rights reserved.
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