mt18lsdt12872a Micron Semiconductor Products, mt18lsdt12872a Datasheet - Page 17

• Manufacturer Part Number: mt18lsdt12872a
• Description: Synchronous Dram Module
• Manufacturer: Micron Semiconductor Products

AC Operating Specifications
Table 16:
PDF: 09005aef8088b1bf/Source: 09005aef808807ca
SD9_18C64_128X72AG.fm - Rev. C 6/05 EN
AC Characteristics
Parameter
Access time from CLK (positive edge) CL = 3
Address hold time
Address setup time
CLK high-level width
CLK low-level width
Clock cycle time
CKE hold time
CKE setup time
CS#, RAS#, CAS#, WE#, DQM hold time
CS#, RAS#, CAS#, WE#, DQM setup time
Data-in hold time
Data-in setup time
Data-out High-Z time
Data-out Low-Z time
Data-out hold time (load)
Data-out hold time (no load)
ACTIVE-to-PRECHARGE command
ACTIVE-to-ACTIVE command period
ACTIVE-to-READ or WRITE delay
Refresh period (8,192rows)
AUTO REFRESH period
PRECHARGE command period
ACTIVE bank a to ACTIVE bank b command
Transition time
WRITE recovery time
Exit SELF REFRESH-to-ACTIVE command
Electrical Characteristics and Recommended AC Operating Conditions
Notes: 5, 6, 8, 9, 11, 31; notes appear on page 19
Module AC timing parameters comply with PC100 and PC133 design specifications, based on component
parameters
CL = 2
CL = 3
CL = 2
CL = 3
CL = 2
512MB (SR), 1GB (DR): (x72, ECC) 168-Pin SDRAM UDIMM
Symbol
t
t
t
t
t
t
t
t
AC(3)
AC(2)
CK(3)
CK(2)
t
HZ(3)
HZ(2)
t
t
t
t
t
t
CMH
t
t
t
t
t
CKH
CMS
t
t
OH
RCD
RRD
t
t
CKS
t
RAS
t
RFC
t
XSR
t
REF
WR
OH
AH
CH
DH
AS
DS
RC
CL
RP
t
LZ
T
N
1 CLK + 7ns
17
Min
0.8
1.5
2.5
2.5
7.5
0.8
1.5
0.8
1.5
0.8
1.5
1.8
0.3
37
60
15
66
15
14
14
67
7
1
3
-13E
Micron Technology, Inc., reserves the right to change products or specifications without notice.
120,000
Max
5.4
5.4
5.4
5.4
1.2
64
1 CLK + 7.5ns
AC Operating Specifications
Min
0.8
1.5
2.5
2.5
7.5
0.8
1.5
0.8
1.5
0.8
1.5
1.8
0.3
10
44
66
20
66
20
15
15
75
1
3
-133
©2002 Micron Technology, Inc. All rights reserved.
120,000
Max
5.4
5.4
1.2
64
6
6
Units
ms
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Notes
27
23
23
10
10
28
32
24
25
20
7