WED3DG647V7D2 [WEDC]
Synchronous DRAM Module, 8MX64, CMOS, DIMM-168;
| 型号： | WED3DG647V7D2 |
| 厂家： | 
WHITE ELECTRONIC DESIGNS CORPORATION |
| 描述： | Synchronous DRAM Module, 8MX64, CMOS, DIMM-168 时钟 动态存储器 内存集成电路 |
| 文件： | 总5页 (文件大小：242K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
WED3DG647V-D2
White Electronic Designs
64MB- 8Mx64 SDRAM UNBUFFERED
FEATURES
DESCRIPTION
Burst Mode Operation
The WED3DG647V is a 8Mx64 synchronous DRAM
modulewhichconsistsofeight8Mx8SDRAMcomponents
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.
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
*This datasheet describes a product that may or may not be under development and is
subject to change or cancellation without notice.
Programmable Burst Lengths: 1, 2, 4, 8 or Full Page
3.3V ± 0.3V Power Supply
168 pin DIMM JEDEC
Pin Configurations (Front Side/Back Side)
PIN NAMES
Pin
1
Front
VSS
Pin
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
Front
DQM1
CS0#
DNU
VSS
Pin
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
Front
DQ18
DQ19
VCC
Pin
85
Back
VSS
Pin
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
Back
DQM5
CS1#
RAS#
VSS
Pin
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
Back
DQ50
DQ51
VCC
A0 – A11
BA0-1
DQ0-63
CK0,CK2
CKE0
CS0#,CS2#
RAS#
CAS#
WE#
Address input (Multiplexed)
Select Bank
2
DQ0
DQ1
DQ2
DQ3
VCC
86
DQ32
DQ33
DQ34
DQ35
VCC
3
87
Data Input/Output
Clock input
4
DQ20
NC
88
DQ52
NC
5
A0
89
A1
6
A2
*VREF
*CKE1
VSS
90
A3
*VREF
DNU
VSS
Clock Enable input
Chip select Input
Row Address Strobe
Column Address Strobe
Write Enable
7
DQ4
DQ5
DQ6
DQ7
DQ8
VSS
A4
91
DQ36
DQ37
DQ38
DQ39
DQ40
VSS
A5
8
A6
92
A7
9
A8
DQ21
DQ22
DQ23
VSS
93
A9
DQ53
DQ54
DQ55
VSS
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
A10/AP
BA1
VCC
94
BA0
A11
95
96
VCC
DQ9
DQ10
DQ11
DQ12
DQ13
VCC
VCC
DQ24
DQ25
DQ26
DQ27
VCC
97
DQ41
DQ42
DQ43
DQ44
DQ45
VCC
*CK1
*A12
VSS
DQ56
DQ57
DQ58
DQ59
VCC
CK0
VSS
98
DQM0-7#
VCC
DQM
99
DNU
CS2#
DQM2
DQM3
DNU
VCC
100
101
102
103
104
105
106
107
108
109
110
111
112
CKE0
*CS3#
DQM6
DQM7
*A13
VCC
Power Supply (3.3V)
Ground
VSS
DQ28
DQ29
DQ30
DQ31
VSS
DQ60
DQ61
DQ62
DQ63
VSS
DQ14
DQ15
*CB0
*CB1
VSS
DQ46
DQ47
*CB4
*CB5
VSS
SDA
Serial data I/O
Serial clock
SCL
NC
NC
DNU
Do not use
NC
CK2
NC
*CLK3
NC
NC
No Connect
NC
*CB2
*CB3
VSS
NC
NC
*CB6
*CB7
VSS
NC
WP***
**SDA
**SCL
VCC
NC
**SA0
**SA1
**SA2
VCC
WP
Write Protect
VCC
VCC
*These pins are not used in this module.
**These pins should be NC in the system which
does not support SPD.
WE#
DQM0
DQ16
DQ17
CAS#
DQM4
DQ48
DQ49
*** WP Available on the WED3DG637V-D2 only.
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
Month, Year
1
White Electronic Designs Corporation • (602) 437-1520 • www.whiteedc.com
Rev. #
WED3DG647V-D2
White Electronic Designs
FUNCTIONAL BLOCK DIAGRAM
CSO#
DQM0
DQM4
D Q M CS#
D Q M
CS#
DQ32
DQ33
DQ34
DQ35
DQ36
DQ37
DQ38
DQ39
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
DQ0
DQ1
U0
U4
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
DQM1
DQM5
D Q M
D Q M
CS#
CS#
DQ40
DQ41
DQ42
DQ43
DQ44
DQ45
DQ46
DQ47
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
DQ8
DQ9
U5
U1
DQ10
DQ11
DQ12
DQ13
DQ14
DQ15
CS2#
DQM2
DQM6
D Q M
CS#
DQM
CS#
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
DQ48
DQ49
DQ50
DQ51
DQ52
DQ53
DQ54
DQ55
DQ16
DQ17
DQ18
DQ19
DQ20
DQ21
DQ22
DQ23
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
U6
U2
DQM3
DQM7
DQM
CS#
DQM
CS#
DQ56
DQ57
DQ58
DQ59
DQ60
DQ61
DQ62
DQ63
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
DQ24
DQ25
DQ26
DQ27
DQ28
DQ29
DQ30
DQ31
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
U7
U3
SDA
SCL
WP
A0 A1 A2
SA1 SA2
SA0
SDRAM U0–U7
SDRAM U0–U7
U0/U2
A0–A11,BA0 &1
RAS#
U4/U6
U1/U3
10Ω
CK0/2
SDRAM
CAS#
U0–U7
SDRAM U0–U7
SDRAM U0–U7
U5/U7
WE#
CKE0
1.5pF
10Ω
Every DQpin of SDRAM
DQn
10Ω
V
CC
SS
CK1/3
TWO 0.1 uF CAPACITORS
PER EACH SDRAM
10pF
To all SDRAMS
V
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
Month, Year
2
White Electronic Designs Corporation • (602) 437-1520 • www.whiteedc.com
Rev. #
WED3DG647V-D2
White Electronic Designs
ABSOLUTE MAXIMUM RATINGS
Parameter
Symbol
VIN, VOUT
VCC, VCCQ
TSTG
Value
-1.0 ~ 4.6
-1.0 ~ 4.6
-55 ~ +150
8
Units
V
Voltage on any pin relative to VSS
Voltage on VCC supply relative to VSS
Storage Temperature
V
°C
W
Power Dissipation
PD
Short Circuit Current
IOS
50
mA
Note: Permanent device damage may occur if "ABSOLUTE MAXIMUM RATINGS" are exceeded.
Functional operation should be restricted to recommended operating condition.
Exposure to higher than recommended voltage for extended periods of time could affect device reliability.
RECOMMENDED DC OPERATING CONDITIONS
(Voltage Referenced to: VSS = 0V, TA = 0°C to +70°C)
Parameter
Supply Voltage
Symbol
VCC
VIH
Min
3.0
2.0
-0.3
2.4
—
Typ
3.3
3.0
—
Max
3.6
Unit
V
Note
Input High Voltage
Input Low Voltage
VCCQ+0.3
0.8
V
1
VIL
V
2
Output High Voltage
Output Low Voltage
Input Leakage Current
VOH
VOL
ILI
—
—
V
IOH= -2mA
IOL= -2mA
3
—
0.4
V
-10
—
10
µA
Note: 1. VIH (max)= 5.6V AC. The overshoot voltage duration is ≤ 3ns.
2. VIL (min)= -2.0V AC. The undershoot voltage duration is ≤ 3ns.
3. Any input 0V ≤ VIN ≤ VCC
Input leakage currents include Hi-Z output leakage for all bi-directional buffers with Tri-State
outputs.
CAPACITANCE
(TA = 23°C, f = 1MHz, VCC = 3.3V, VREF=1.4V ± 200mV)
Parameter
Input Capacitance (A0-A12)
Input Capacitance (RAS#,CAS#,WE#)
Input Capacitance (CKE0)
Symbo
CIN1
Minl
Max
45
Unit
pF
-
-
-
CIN2
45
pF
CIN3
45
pF
Input Capacitance (CLK0, CLK2)
Input Capacitance (CS0#,CS2#)
Input Capacitance (DQM0-DQM7)
Input Capacitance (BA0-BA1)
CIN4
CIN5
CIN6
CIN7
COUT
-
-
-
-
-
30
25
10
45
12
pF
pF
pF
pF
pF
Data input/output capacitance (DQ0-DQ63)
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
Month, Year
3
White Electronic Designs Corporation • (602) 437-1520 • www.whiteedc.com
Rev. #
WED3DG647V-D2
White Electronic Designs
OPERATING CURRENT CHARACTERISTICS
(VCC = 3.3V, 0°C≤TA≤70°C)
Parameters
Symbol
Conditions
Versions
Units
Note
133
100
Operating Current
(One bank active)
ICC1
600
520
mA
1
Burst Length = 1
tRC ≥ tRC(min)
IOL = 0mA
ICC2P
ICC2PS
ICC2N
10
10
mA
mA
mA
Precharge Standby Current
in Power Down Mode
CKE ≤ VIL(max), tCC = 10ns
CKE & CK ≤ VIL(max), tCC = ∞
Precharge Standby Current
in Non-Power Down Mode
120
CKE ≥ VIH(min), CS ≥ VIH(min), tCC =10ns
Input signals are charged one time during 20
50
mA
mA
ICC2NS
CKE ≥ VIH(min), CK ≤ VIL(max), tCC= ∞
Input signals are stable
25
25
Active standby current in power-
down mode
ICC3P
CKE ≥ VIL(max), tCC = 10ns
ICC3PS
CKE & CK ≤ VIL(max), tCC = ∞
Active standby in current non
power-down mode
ICC3N
200
120
mA
CKE ≥ VIH(min), CS ≥ VIH(min), tCC = 10ns
Input signals are charged one time during 20ns
ICC3NS
mA
mA
CKE ≥ VIH(min), CK ≤ VIL(max), tCC = ∞
input signals are stable
ICC4
920
840
810
1
2
Operating current (Burst mode)
Io = mA
Page burst
4 Banks activated
tCCD = 2CK
Refresh current
ICC5
ICC6
1080
mA
mA
tRC ≥ tRC(min)
CKE ≤ 0.2V
Self refresh current
10
Notes: 1. Measured with outputs open.
2. Refresh period is 64ms.
3. Unless otherwise noticed, input swing level is CMOS (VIH/VIL = VCC/VssQ)
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
Month, Year
4
White Electronic Designs Corporation • (602) 437-1520 • www.whiteedc.com
Rev. #
WED3DG647V-D2
White Electronic Designs
ORDERING INFORMATION
Part Number
Speed
100MHz
133MHz
133MHz
CAS Latency
CL=2
Part Number
Speed
100MHz
133MHz
133MHz
CAS Latency
CL=2
WED3DG647V10D2
WED3DG647V7D2
WED3DG647V75D2
WED3DG637V10D2
WED3DG637V7D2
WED3DG637V75D2
CL=2
CL=2
CL=3
CL=3
Note: Modules are available in industrial temperature - 40°C to 85°C.
Note: Available with "WP" Write Protect on pin 81.
PACKAGE DIMENSIONS
5.255 MAX.
.100
MAX.
.125 (2X)
.157
(2X)
1.200
MAX.
.700
P1
1.450
1.660
.450
.157 MIN.
2.150
.350
.250
.250
.050 .004
4.550
ALL DIMENSIONS ARE IN INCHES
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
Month, Year
5
White Electronic Designs Corporation • (602) 437-1520 • www.whiteedc.com
Rev. #
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