WV3DG72256V-AD2 Datasheet, PDF (1/9 Pages) White Electronic Designs Corporation – 2GB - 2x128Mx72 SDRAM, REGISTERED

White Electronic Designs
WV3DG72256V-AD2
PRELIMINARY
2GB – 2x128Mx72 SDRAM, REGISTERED
FEATURES
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
Dual Rank
168 Pin DIMM JEDEC
• PCB - AD2: 28.58mm (1.125”) TYP
DESCRIPTION
The WV3DG72256V is a 2x128Mx72 synchronous DRAM
module which consists of eighteen 256Mx4 stack SDRAM
components (stacked from 128Mx4) in TSOP II package,
two 18 bit Drive ICs for input control signal and one 2Kb
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.
NOTE: Consult factory for availability of:
• RoHS compliant products
• Vendor source control options
• Industrial temperature option
PIN CONFIGURATIONS (FRONT SIDE/BACK SIDE)
PIN FRONT PIN BACK 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
NC
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 REGE
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
NC
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
NC
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
NC
76 DQ30 104 DQ47 132
NC
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
NC 107 VSS 135
NC
163
NC
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 Address Input (Multiplexed)
BA0-1
Select Bank
DQ0-63
Data Input/Output
CB0-7
Check Bit (Data-In/Data-Out)
CLK0
Clock Input
CKE0
Clock Enable Input
CS0# - CS3# Chip Select Input
RAS#
Row Address Strobe
CAS#
Column Address Strobe
WE#
Write Enable
DQM0-7
DQM
VCC
Power Supply (3.3V)
VSS
Ground
VREF
Power Supply for Reference
REGE
Register Enable
SDA
Serial Data I/O
SCL
Serial Clock
SA0-2
Address in EEPROM
NC
No Connect
* Pins not used in this module.
January 2006
Rev. 0
1
White Electronic Designs Corporation • [phone] • www.wedc.com