mt18ld472fg-5 Micron Semiconductor Products, mt18ld472fg-5 Datasheet - Page 12

• Manufacturer Part Number: mt18ld472fg-5
• Description: 2, 4 Meg X 72 Buffered Dram Dimms
• Manufacturer: Micron Semiconductor Products

OBSOLETE
EDO PAGE MODE
AC ELECTRICAL CHARACTERISTICS
(Notes: 5, 6, 7, 8, 9, 12, 35) (V
2, 4 Meg x 72 Buffered DRAM DIMMs
DM33.p65 – Rev. 2/99
AC CHARACTERISTICS - EDO PAGE MODE OPTION
PARAMETER
OE# setup prior to RAS#
during HIDDEN REFRESH cycle
EDO-PAGE-MODE READ or WRITE cycle time
PDE# to valid presence-detect data
PDE# inactive to presence-detect inactive
EDO-PAGE-MODE READ-WRITE cycle time
Access time from RAS#
RAS# to column-address delay time
Row-address hold time
RAS# pulse width
RAS# pulse width (EDO PAGE MODE)
Random READ or WRITE cycle time
RAS# to CAS# delay time
READ command hold time (referenced to CAS#)
READ command setup time
Refresh period (2,048 cycles) (16MB)
Refresh period (4,096 cycles) (32MB)
RAS# precharge time
RAS# to CAS# precharge time
READ command hold time (referenced to RAS#)
RAS# hold time
READ-ZWRITE cycle time
RAS# to WE# delay time
WRITE command to RAS# lead time
Transition time (rise or fall)
WRITE command hold time
WRITE command hold time (referenced to RAS#)
WE# command setup time
Output disable delay from WE#
WRITE command pulse width
WE# pulse to disable at CAS# HIGH
WE# hold time (CBR Refresh)
WE# setup time (CBR Refresh)
DD
= +3.3V ±0.3V)
SYMBOL
t
t
PDOFF
t
t
t
t
t
PRWC
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
RASP
t
t
t
t
RWD
WCH
WHZ
WRH
ORD
RWC
RWL
WCR
WCS
t
WPZ
WRP
RAD
RAH
t
RAC
RAS
RCD
RCH
RRH
RSH
t
t
RCS
REF
REF
t
RPC
WP
PD
RC
PC
RP
t
T
12
MIN
121
20
49
50
50
84
30
18
69
18
13
36
10
10
0
2
7
7
9
2
2
5
0
2
2
2
5
6
-5
125,000
10,000
MAX
Micron Technology, Inc., reserves the right to change products or specifications without notice.
10
50
32
64
50
17
BUFFERED DRAM DIMMs
MIN
104
145
25
58
10
60
60
12
40
20
81
20
15
43
10
12
0
2
8
2
2
5
0
2
2
2
5
8
-6
125,000
10,000
MAX
10
60
32
64
50
20
2, 4 MEG x 72
UNITS
ms
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
ns
©1999, Micron Technology, Inc.
NOTES
17, 22
16, 24
18, 21
21, 28
21, 28
32
31
21
13
22
18
23
23
23
23
22
25
22
21
21