168-pin Low Profile SDRAM DIMMs
32MB, 64MB, 128MB, 256MB, 512MB
Data Sheet
32MB DIMM Functional Block Diagram – SM3208LDT
S0#
Clock Wiring
CK0
CK1
CK2
CK3
2 SDRAM+15 pf
Termination
2 SDRAM+15 pf
Termination
DQMB0
U0
U2
DQMB1
DQ(15:0)
10
CK0,2
SDRAMs
DQMB4
DQMB5
Clock Termination
10
DQ(47:32)
CK1,3
10 pf
S2#
DQMB2
DQMB3
SCL
SA0-2
SDA
U1
U3
Serial PD
WP
47K
DQ(31:16)
DQMB6
DQMB7
BA0
BA1
BA0 SDRAM U0-3
BA1 SDRAM U0-3
A0-A11 SDRAM U0-3
Vdd SDRAM U0-3
Vss SDRAM U0-3
DQ(63:48)
A0-A11
Vdd
Vss
RAS#
CAS#
WE#
RAS# SDRAM U0-3
CAS# SDRAM U0-3
WE# SDRAM U0-3
CKE SDRAM U0-3
CKE0
Note:
All DQ resistor values are 10 ohms.
All CK resistor values are 10 ohms.
U0-U3 are 4Mx16 PC133 SDRAM Devices.
Enhanced Memory Systems Inc., 1850 Ramtron Dr., Colo Spgs, CO 80921
PHONE: (800) 545-DRAM; FAX: (719) 488-9095; http://www.edram.com
2001 Enhanced Memory Systems. All rights reserved.
The information contained herein is subject to change without notice.
Revision 1.1
Page 3 of 20
RAMTRON [ RAMTRON INTERNATIONAL CORPORATION ]
