168-pin Low Profile SDRAM DIMMs
32MB, 64MB, 128MB, 256MB, 512MB
Data Sheet
512MB DIMM Functional Block Diagram – SM51208BLDT
S0#
S1#
Clock Wiring
CK0
CK1
CK2
CK3
4 SDRAM+3.3 pf
4 SDRAM+3.3 pf
4 SDRAM+3.3 pf
4 SDRAM+3.3 pf
DQMB0
DQ(7:0)
DQMB4
DQ(39:32)
U0
U1
U8
U9
U4
U5
U12
U13
10
CK0-3
SDRAMs
DQMB1
DQ(15:8)
DQMB5
DQ(47:40)
SCL
SDA
Serial PD
SA0-2
WP
47K
S2#
S3#
BA0
BA1
BA0 SDRAM U0-15
BA1 SDRAM U0-15
A0-A12 SDRAM U0-15
Vdd SDRAM U0-15
Vss SDRAM U0-15
DQMB2
DQMB6
DQ(55:48)
U2
U3
U10
U11
U6
U7
U14
U15
DQ(23:16)
A0-A12
Vdd
Vss
DQMB3
DQ(31:24)
DQMB7
DQ(63:56)
RAS#
CAS#
WE#
RAS# SDRAM U0-15
CAS# SDRAM U0-15
WE# SDRAM U0-15
CKE SDRAM U0-7
CKE0
CKE1
CKE SDRAM U8-15
Note:
All DQ resistor values are 10 ohms.
All CK resistor values are 10 ohms.
U0-U15 are 32Mx8 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.
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Revision 1.1
RAMTRON [ RAMTRON INTERNATIONAL CORPORATION ]
