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WED3DG728V-D1 Datasheet Preview

WED3DG728V-D1 Datasheet

8Mx72 SDRAM UNBUFFERED

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Whitewww.datasheet4u.com Electronic Designs
WED3DG728V-D1
ADVANCED*
64MB – 8Mx72 SDRAM UNBUFFERED
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
144 Pin SO-DIMM
• PCB height: 27.94mm (1.10")
DESCRIPTION
The WED3DG728V is a 8Mx72 synchronous DRAM
module which consists of nine 8Mx8 SDRAM components
in TSOP II package, and one 2Kb EEPROM in an 8
pin TSOP package for Serial Presence Detect which
are mounted on a 144 pin SO-DIMM multilayer FR4
Substrate.
* This product is under development, is not qualified or characterized and is subject to
change or cancellation without notice.
NOTE: Consult factory for availability of:
• RoHS compliant products
• Vendor source control options
• Industrial temperature option
PIN CONFIGURATIONS (FRONT SIDE/BACK SIDE)
PINOUT
PIN FRONT PIN BACK PIN FRONT PIN
1 VSS 2 VSS 49 DQ13 50
3 DQ0 4 DQ32 51 DQ14 52
5 DQ1 6 DQ33 53 DQ15 54
7 DQ2 8 DQ34 55 VSS 56
9 DQ3 10 DQ35 57 CB0 58
11 VCC 12 VCC 59 CB1 60
13 DQ4 14 DQ36 61 CLK0 62
15 DQ5 16 DQ37 63 VCC 64
17 DQ6 18 DQ38 65 RAS# 66
19 DQ7 20 DQ39 67 WE# 68
21 VSS 22 VSS 69 SO# 70
23 DQMB0 24 DQMB4 71 NC 72
25 DQMB1 26 DQMB5 73 NC 74
27 VCC 28 VCC 75 VSS 76
29 A0 30 A3 77 CB2 78
31 A1 32 A4 79 CB3 80
33 A2 34 A5 81 VCC 82
35 VSS 36 VSS 83 DQ16 84
37 DQ8 38 DQ40 85 DQ17 86
39 DQ9 40 DQ41 87 DQ18 88
41 DQ10 42 DQ42 89 DQ19 90
43 DQ11 44 DQ43 91 VSS 92
45 VCC 46 VCC 93 DQ20 94
47 DQ12 48 DQ44 95 DQ21 96
BACK
DQ45
DQ46
DQ47
VSS
CB4
CB5
CKE0
VCC
CAS#
NC
NC
NC
CK1
VSS
CB6
CB7
VCC
DQ48
DQ49
DQ50
DQ51
VSS
DQ52
DQ53
PIN FRONT PIN BACK
97 DQ22 98 DQ54
99 DQ23 100 DQ55
101 VCC 102 DQ55
103 A6 104 A7
105 A8 106 BA0
107 VSS 108 VSS
109 A9 110 BA1
111 A10 112 A11
113 VCC 114 VCC
115 DQMB2 116 DQMB6
117 DQMB3 118 DQMB7
119 VSS 120 VSS
121 DQ24 122 DQ56
123 DQ25 124 DQ57
125 DQ26 126 DQ58
127 DQ27 128 DQ59
129 VCC 130 VCC
131 DQ28 132 DQ60
133 DQ29 134 DQ61
135 DQ30 136 DQ62
137 DQ31 138 DQ63
139 VSS 140 VSS
141 SDA 142 SCL
143 VCC 144 VCC
PIN NAMES
A0 – A11
BA0-1
DQ0-63
CB0-7
CLK0,CLK1
CKE0
CS0#
RAS#
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
CAS#
WE#
DQMB0-7
VCC
VSS
SDA
SCL
NC
Column Address Strobe
Write Enable
DQM
Power Supply (3.3V)
Ground
Serial Data I/O
Serial Clock
No Connect
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
October 2005
Rev. 0
1 White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com




White Electronic Designs

WED3DG728V-D1 Datasheet Preview

WED3DG728V-D1 Datasheet

8Mx72 SDRAM UNBUFFERED

No Preview Available !

Whitewww.datasheet4u.com Electronic Designs
WED3DG728V-D1
ADVANCED
FUNCTIONAL BLOCK DIAGRAM
WE#
DQMB0
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
DQMB1
DQ8
DQ9
DQ10
DQ11
DQ12
DQ13
DQ14
DQ15
S0#
DQM
I/O0
I/O1
I/O2
I/O3
I/O4
I/O5
I/O6
I/O7
DQM
I/O0
I/O1
I/O2
I/O3
I/O4
I/O5
I/O6
I/O7
S0# WE#
S0# WE#
CB0
CB1
CB2
CB3
CB4
CB5
CB6
CB7
DQMB2
DQ16
DQ17
DQ18
DQ19
DQ20
DQ21
DQ22
DQ23
DQMB3
DQ24
DQ25
DQ26
DQ27
DQ28
DQ29
DQ30
DQ31
RAS#
CAS#
CKE0
BA0-BA1
A0-A11
DQM
I/O0
I/O1
I/O2
I/O3
I/O4
I/O5
I/O6
I/O7
S0# WE#
DQM
I/O0
I/O1
I/O2
I/O3
I/O4
I/O5
I/O6
I/O7
S0# WE#
DQM
I/O0
I/O1
I/O2
I/O3
I/O4
I/O5
I/O6
I/O7
S0# WE#
RAS#: SDRAM
CAS#: SDRAM
CKE0: SDRAM
BA0-BA1: SDRAM
A0-A11: SDRAM
DQMB4
DQ32
DQ33
DQ34
DQ35
DQ36
DQ37
DQ38
DQ39
DQMB5
DQ40
DQ41
DQ42
DQ43
DQ44
DQ45
DQ46
DQ47
DQMB6
DQ48
DQ49
DQ50
DQ51
DQ52
DQ53
DQ54
DQ55
DQMB7
DQ56
DQ57
DQ58
DQ59
DQ60
DQ61
DQ62
DQ63
DQM
I/O0
I/O1
I/O2
I/O3
I/O4
I/O5
I/O6
I/O7
S0#
WE#
DQM
I/O0
I/O1
I/O2
I/O3
I/O4
I/O5
I/O6
I/O7
S0#
WE#
DQM
I/O0
I/O1
I/O2
I/O3
I/O4
I/O5
I/O6
I/O7
S0#
WE#
DQM
I/O0
I/O1
I/O2
I/O3
I/O4
I/O5
I/O6
I/O7
S0#
WE#
*CLOCK WIRING
CLOCK
INPUT
SDRAMS
*CLK0 4 0R 5 SDRAMS
*CLK1 4 0R 5 SDRAMS
SCL
SERIAL PD
A0 A1 A2
SDA
VCC SDRAM
VSS SDRAM
NOTE: DQ wiring may differ than described in this drawing, however DQ/DQMB/
CKE/S relationships must be maintianed as shown.
All resister values are 22 ohms ±5% unless otherwise specified.
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
October 2005
Rev. 0
2 White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com


Part Number WED3DG728V-D1
Description 8Mx72 SDRAM UNBUFFERED
Maker White Electronic Designs
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