SM4M64ALDT-6 Enhanced Memory Systems, Inc., SM4M64ALDT-6 Datasheet - Page 9

• Manufacturer Part Number: SM4M64ALDT-6
• Description: 168-pin Low Profile ESDRAM DIMM
• Manufacturer: Enhanced Memory Systems, Inc.

Preliminary Data Sheet
AC Characteristics (T
1.
2.
3.
4. AC measurements assume t
5.
Enhanced Memory Systems Inc., 1850 Ramtron Dr., Colo Spgs, CO 80921
PHONE: (800) 545-DRAM; FAX: [phone];
Revision 1.0
An initial pause of 200 s is required after power-up, then a Precharge All Banks command must be given followed by a minimum
of eight Auto (CBR) Refresh cycles before the Mode Register Set operation can begin.
AC timing tests have V
The transition time is measured between V
In addition to meeting the transition rate specification, the clock and CKE must transition V
a monotonic manner.
Clock
Input
Output
t
SETUP
t
HOLD
t
A
LZ
IL
T
= 0 C to 70 C)
t
= 1ns.
AC
= 0.8V and V
http://www.edram.com
IH
and V
IH
t
OH
= 2.0V with the timing referenced to the V
IL
(or between V
t
V
T
TT
VIH
VTT
VIL
IH
and V
IL
Output
).
The information contained herein is subject to change without notice.
168-pin Low Profile ESDRAM DIMMs
AC Output Load Circuit
Z
0
2001 Enhanced Memory Systems. All rights reserved.
= 50 ohm
IH
and V
TT
IL
32MB, 64MB, 128MB
V
TT
(or between V
= 1.4V crossover point.
R
C
T
LOAD
= 50 ohm
= 50pF
IH
and V
Page 9 of 15
IL
) in