W3DG6435V-D2 Datasheet, PDF (1/6 Pages) White Electronic Designs Corporation – 256MB - 32Mx64 SDRAM UNBUFFERED

White Electronic Designs
W3DG6435V-D2
PRELIMINARY*
256MB - 32Mx64 SDRAM UNBUFFERED
FEATURES
PC100 and PC133 compatible
Burst Mode Operation
Auto and Self Refresh capability
LVTTL compatible inputs and outputs
Serial Presence Detect with EEPROM
Fully synchronous: All signals are registered on the
positive edge of the system clock
Programmable Burst Lengths: 1, 2, 4, 8 or Full
Page
3.3V ± 0.3V Power Supply
168 Pin DIMM JEDEC
DESCRIPTION
The W3DG6435V is a 32Mx64 synchronous DRAM module
which consists of eight 32Mx8 SDRAM components in
TSOP II package and one 2K EEPROM in an 8 pin TSSOP
package for Serial Presence Detect which are mounted
on a 168 Pin DIMM multilayer FR4 Substrate.
* This product is under development, is not qualified or characterized and is subject to
change without notice.
PIN CONFIGURATIONS (FRONT SIDE/BACK SIDE)
PIN FRONT PIN FRONT PIN FRONT PIN BACK PIN BACK PIN BACK
1
VSS
29 DQM1 57 DQ18 85
VSS
113 DQM5 141 DQ50
2
DQ0 30 CS0# 58 DQ19 86 DQ32 114 CS1# 142 DQ51
3
DQ1 31 DNU 59
VCC
87 DQ33 115 RAS# 143 VCC
4
DQ2 32
VSS
60 DQ20 88 DQ34 116 VSS 144 DQ52
5
DQ3 33
A0
61
NC
89 DQ35 117
A1
145
NC
6
VCC
34
A2
62
*VREF
90
VCC
118
A3
146 *VREF
7
DQ4 35
A4
63 CKE1 91 DQ36 119
A5
147 DNU
8
DQ5 36
A6
64
VSS
92 DQ37 120
A7
148
VSS
9
DQ6 37
A8
65 DQ21 93 DQ38 121
A9
149 DQ53
10 DQ7 38 A10/AP 66 DQ22 94 DQ39 122 BA0 150 DQ54
11 DQ8 39 BA1 67 DQ23 95 DQ40 123 A11 151 DQ55
12
VSS
40
VCC
68
VSS
96
VSS
124
VCC
152
VSS
13
DQ9
41
VCC
69 DQ24 97 DQ41 125 CLK1 153 DQ56
14 DQ10 42 CLK0 70 DQ25 98 DQ42 126 *A12 154 DQ57
15 DQ11 43
VSS
71 DQ26 99 DQ43 127 VSS 155 DQ58
16 DQ12 44 DNU 72 DQ27 100 DQ44 128 CKE0 156 DQ59
17 DQ13 45 CS2# 73
VCC 101 DQ45 129 CS3# 157 VCC
18
VCC
46 DQM2 74 DQ28 102 VCC 130 DQM6 158 DQ60
19 DQ14 47 DQM3 75 DQ29 103 DQ46 131 DQM7 159 DQ61
20 DQ15 48 DNU 76 DQ30 104 DQ47 132 *A13 160 DQ62
21 *CB0 49
VCC
77 DQ31 105 *CB4 133 VCC 161 DQ63
22 *CB1 50
NC
78
VSS
106 *CB5 134
NC
162
VSS
23
VSS
51
NC
79 CLK2 107 VSS 135 NC 163 CLK3
24
NC
52 *CB2 80
NC 108 NC 136 *CB6 164 NC
25
NC
53 *CB3 81 WP*** 109 NC 137 *CB7 165 **SA0
26
VCC
54
VSS
82 **SDA 110 VCC 138 VSS 166 **SA1
27 WE# 55 DQ16 83 **SCL 111 CAS# 139 DQ48 167 **SA2
28 DQM0 56 DQ17 84
VCC 112 DQM4 140 DQ49 168 VCC
PIN NAMES
A0 – A12
BA0-1
DQ0-63
CB0-7
CLK0-CLK3
CKE0#
CS0#-CS2#
RAS#
CAS#
WE#
DQM0-7
VCC
VSS
SDA
SCL
DNU
NC
WP
Address input (Multiplexed)
Select Bank
Data Input/Output
Check bit (Data-in/Data-out)
Clock input
Clock Enable input
Chip select Input
Row Address Strobe
Column Address Strobe
Write Enable
DQM
Power Supply (3.3V)
Ground
Serial data I/O
Serial clock
Do not use
No Connect
Write Protect
** These pins should be NC in the system
which does not support SPD.
*** WP available on the WED3DG6335V-D2.
July 2004
Rev. 0
1
White Electronic Designs Corporation • [phone] • www.wedc.com