W3DG64128V-D1 Datasheet, PDF (1/7 Pages) White Electronic Designs Corporation – 1GB - 2x64Mx64 SDRAM, UNBUFFERED w/PLL

White Electronic Designs
W3DG64128V-D1
PRELIMINARY*
1GB – 2x64Mx64 SDRAM, UNBUFFERED w/PLL
FEATURES
DESCRIPTION
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
144 Pin SO-DIMM
• PBC height: 31.75 (1.25”)
The W3DG64128V is a 2x64Mx64 synchronous DRAM
module which consists of eight 128Mx8 stack of SDRAM
components in TSOP II package, and one 2Kb EEPROM
in an 8 pin TSSOP package for Serial Presence Detect
which are mounted on a 144 pin SO-DIMM multilayer
FR4 Substrate. This module is structured as 2 Ranks of
64Mx64 SDRAM.
* This product is under development, is not qualified or characterized and is subject to
change without notice.
NOTE: Consult factory for availability of:
• RoHS Products
• Vendor source control options
• Industrial temperature option
PIN CONFIGURATIONS (FRONT SIDE/BACK SIDE)
PINOUT
PIN FRONT PIN BACK PIN FRONT PIN BACK PIN BACK PIN BACK
1
VSS
2
VSS 49 DQ13 50 DQ45 97 DQ22 98 DQ54
3 DQ0 4 DQ32 51 DQ14 52 DQ46 99 DQ23 100 DQ55
5
DQ1
6
DQ33 53 DQ15 54 DQ47 101
VCC
102
VCC
7
DQ2
8
DQ34 55
VSS
56
VSS 103
A6
104
A7
9
DQ3 10 DQ35 57
NC
58
NC 105
A8
106 BA0
11
VCC
12
VCC
59
NC
60
NC 107
VSS
108
VSS
13 DQ4 14 DQ36 61 CK0 62 CKE0 109
A9
110 BA1
15 DQ5 16 DQ37 63 VCC 64 VCC 111 A10 112 A11
17 DQ6 18 DQ38 65 RAS# 66 CAS# 113
VCC
114
VCC
19 DQ7 20 DQ39 67 WE# 68 CKE1 115 DQMB2 116 DQMB6
21
VSS
22
VSS
69 CS0# 70 A12 117 DQMB3 118 DQMB7
23 DQM0 24 DQM4 71 CS1# 72
NC 119
VSS
120
VSS
25 DQM1 26 DQM5 73 NC 74 NC 121 DQ24 122 DQ56
27
VCC
28
VCC
75
VSS
76
VSS 123 DQ25 124 DQ57
29
A0
30
A3
77
NC 78 NC 125 DQ26 126 DQ58
31
A1
32
A4
79
NC 80 NC 127 DQ27 128 DQ59
33
A2
34
A5
81
VCC
82
VCC 129
VCC
130
VCC
35
VSS
36
VSS
83 DQ16 84 DQ48 131 DQ28 132 DQ60
37 DQ8 38 DQ40 85 DQ17 86 DQ49 133 DQ29 134 DQ61
39 DQ9 40 DQ41 87 DQ18 88 DQ50 135 DQ30 136 DQ62
41 DQ10 42 DQ42 89 DQ19 90 DQ51 137 DQ31 138 DQ63
43 DQ11 44 DQ43 91
VSS
92
VSS 139
VSS
140
VSS
45
VCC
46
VCC
93 DQ20 94 DQ52 141 SDA 142
SCL
47 DQ12 48 DQ44 95 DQ21 96 DQ53 143 VCC 144 VCC
PIN NAMES
A0 – A12
BA0-1
DQ0-63
CK0
Address Input (Multiplexed)
Select Bank
Data Input/Output
Clock Input
CKE0, CKE1 Clock Enable Input
CS0#, CS1# Chip Select Input
RAS#
Row Address Strobe
CAS#
WE#
DQM0-7
VCC
VSS
SDA
SCL
DNU
Column Address Strobe
Write Enable
DQM
Power Supply (3.3V)
Ground
Serial Data I/O
Serial Clock
Do Not Use
NC
No Connect
** These pins should be NC in the system which
does not support SPD.
May 2005
Rev. 2
1
White Electronic Designs Corporation • [phone] • www.wedc.com