MT18LSDT6472 Micron, MT18LSDT6472 Datasheet - Page 15

• Manufacturer Part Number: MT18LSDT6472
• Description: 168-Pin SDRAM DIMMs (x72) ECC
• Manufacturer: Micron

ELECTRICAL CHARACTERISTICS AND RECOMMENDED AC OPERATING CONDITIONS*
(Notes: 5, 6, 8, 9, 11; notes appear following parameter tables)
16, 32, 64 Meg x 72 PC133/PC100 Registered SDRAM DIMMs
SD18C16_32_64x72G_B.p65 – Pub. 11/01
*Module AC timing parameters comply with PC100 and PC133 Design Specs, based on component parameters.
AC CHARACTERISTICS
PARAMETER
Access time from
CLK (pos. edge)
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-impedance
time
Data-out low-impedance 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 (8,192 rows)
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
CL = 3
CL = 2
CL = 3
CL = 2
CL = 3
CL = 2
SYMBOL
t
t
t
t
t
t
t
AC(3)
AC(2)
CK(3)
CK(2)
t
t
HZ(3)
HZ(2)
t
t
t
t
CMH
t
t
t
OH
t
t
t
t
CKH
CMS
t
t
CKS
RAS
RCD
RRD
XSR
t
t
t
t
t
REF
RFC
t
WR
AH
DH
OH
CH
AS
DS
RC
RP
CL
LZ
t
T
N
1 CLK +
MIN
7ns
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
15
-13E
168-PIN REGISTERED SDRAM DIMM
128MB / 256MB / 512MB (x72, ECC)
120,000
MAX
5.4
5.4
5.4
5.4
1.2
64
1 CLK +
7.5ns
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
Micron Technology, Inc., reserves the right to change products or specifications without notice.
-133
120,000
MAX
5.4
5.4
1.2
64
6
6
1 CLK +
MIN
7ns
1.8
0.3
10
50
70
20
70
20
20
15
80
1
2
3
3
8
1
2
1
2
1
2
1
3
-10E
120,000
MAX
1.2
64
6
6
6
6
UNITS
©2001, Micron Technology, Inc.
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
29
24
25
20
7