White Electronic Designs
WED3DG7232V-D2
256MB- 32Mx72 SDRAM W/ PLL, REGISTER AND SPD
FEATURES
n
n
n
n
n
n
n
n
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
* This product is subject to change without notice.
DESCRIPTION
The WED3DG7232V is a 32Mx72 synchronous DRAM
module which consists of nine 32Meg x 8 SDRAM
components 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.
PIN CONFIGURATIONS (FRONT SIDE/BACK SIDE)
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
FRONT
V
SS
DQ0
DQ1
DQ2
DQ3
V
CC
DQ4
DQ5
DQ6
DQ7
DQ8
V
SS
DQ9
DQ10
DQ11
DQ12
DQ13
V
CC
DQ14
DQ15
CB0
CB1
V
SS
NC
NC
V
CC
WE#
DQM0
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
BACK
DQM1
CS0#
DNU
V
SS
A0
A2
A4
A6
A8
A10/AP
BA1
V
CC
V
CC
CK0
V
SS
DNU
CS2#
DQM2
DQM3
DNU
V
CC
NC
NC
CB2
CB3
V
SS
DQ16
DQ17
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
V
CC
DQ20
NC
*VREF
*CLE1
V
SS
DQ21
DQ22
DQ23
V
SS
DQ24
DQ25
DQ26
DQ27
V
CC
DQ28
DQ29
DQ30
DQ31
V
SS
*CK2
NC
NC
**SDA
**SCL
V
CC
PIN
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
BACK
V
SS
DQ32
DQ33
DQ34
DQ35
V
CC
DQ36
DQ37
DQ38
DQ39
DQ40
V
SS
DQ41
DQ42
DQ43
DQ44
DQ45
V
CC
DQ46
DQ47
CB4
CB5
V
SS
NC
NC
V
CC
CAS#
DQM4
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#
V
SS
A1
A3
A5
A7
A9
BA0
A11
V
CC
*CK1
A12
V
SS
CKE0
*3CS
DQM6
DQM7
*A13
V
CC
NC
NC
CB6
CB7
V
SS
DQ48
DQ49
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
V
CC
DQ52
NC
*V
REF
REGE
V
SS
DQ53
DQ54
DQ55
V
SS
DQ56
DQ57
DQ58
DQ59
V
CC
DQ60
DQ61
DQ62
DQ63
V
SS
*CK3
NC
**SA0
**SA1
*SA2
V
CC
PIN NAMES
A0 – A12
BA0-1
DQ0-63
CB0-7
CK0
CKE0
CS0#, CS2#
RAS#
CAS#
WE#
DQM0-7
V
CC
V
SS
*V
REF
REGE
SDA
SCL
SA0-2
DNU
NC
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
Power Supply for Reference
Register Enable
Serial Data I/O
Serial Clock
Address in EEPROM
Do Not Use
No Connect
* These pins are not used in this module.
** These pins should be NC in the system which does
not support SPD.
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
Sept. 2002
Rev. 0
1
White Electronic Designs Corporation • (602) 437-1520 • www.whiteedc.com
White Electronic Designs
FUNCTIONAL BLOCK DIAGRAM
½½½½
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½½½½½
½½½½½
½½½½½
½½½½½
½½½½½
½½½½½
½½½½½
½½½½½
½½
WED3DG7232V-D2
½½½½½½
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½½
½½
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½½½½½½½½½½½½½½
½½½½½½½
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½
½
½
½
½
½
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½
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½½½½½½½½½½½½½½½
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½½½½½½½½½½½½½½½½½½½
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½
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½
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½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
Sept. 2002
Rev. 0
2
White Electronic Designs Corporation • (602) 437-1520 • www.whiteedc.com
White Electronic Designs
ABSOLUTE MAXIMUM RATINGS
Parameter
Voltage on any pin relative to V
SS
Voltage on V
CC
supply relative to V
SS
Storage Temperature
Power Dissipation
Short Circuit Current
Symbol
V
IN
, V
OUT
V
CC
, V
CCQ
T
STG
P
D
I
OS
Value
-1.0 ~ 4.6
-1.0 ~ 4.6
-55 ~ +150
9
50
WED3DG7232V-D2
Units
V
V
°C
W
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: V
SS
= 0V, T
A
= 0°C to +70°C)
Symbol
V
CC
V
IH
V
IL
V
OH
V
OL
I
LI
Min
3.0
2.0
-0.3
2.4
—
-10
Typ
3.3
3.0
—
—
—
—
Max
3.6
V
CCQ+0.3
0.8
—
0.4
10
Parameter
Supply Voltage
Input High Voltage
Input Low Voltage
Output High Voltage
Output Low Voltage
Input Leakage Current
Unit
V
V
V
V
V
µA
1
2
I
OH
= -2mA
I
OL
= -2mA
3
Note
Note:
1.
V
IH
(max)= 5.6V AC. The overshoot voltage duration is
≤
3ns.
2.
V
IL
(min)= -2.0V AC. The undershoot voltage duration is
≤
3ns.
3.
Any input 0V
≤
V
IN
≤
V
CCQ
Input leakage currents include Hi-Z output leakage for all bi-directional buffers with Tri-State outputs.
CAPACITANCE
(T
A
= 23°C, f = 1MHz, V
CC
= 3.3V, V
REF
=1.4V
±
200mV)
Parameter
Input Capacitance (A0-A12)
Input Capacitance (RAS#,CAS#,WE#)
Input Capacitance (CKE0)
Input Capacitance (CK0)
Input Capacitance (CS0#, CS2#)
Input Capacitance (DQM0-DQM7)
Input Capacitance (BA0-BA1)
Data input/output capacitance (DQ0-DQ63)
Data input/output capacitance (CB0-CB7)
Symbol
C
IN1
C
IN2
C
IN3
C
IN4
C
IN5
C
IN6
C
IN7
C
OUT
C
OUT1
Max
15
15
15
23
15
15
15
16
16
Unit
pF
pF
pF
pF
pF
pF
pF
pF
pF
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
Sept. 2002
Rev. 0
3
White Electronic Designs Corporation • (602) 437-1520 • www.whiteedc.com
White Electronic Designs
OPERATING CURRENT CHARACTERISTICS
(V
CC
= 3.3V, T
A
= 0°C
≤
+70°C)
WED3DG7232V-D2
Version
Parameter
Operating Current
(One bank active)
Precharge Standby Current
in Power Down Mode
Precharge Standby Current
in Non-Power Down Mode
Symbol
I
CC1
Burst Length = 1
t
RC
≥
t
RC
(min)
I
OL
= 0mA
CKE
≤
V
IL
(max), t
CC
= 10ns
CKE & CK
≤
V
IL
(max), t
CC
=
∞
CKE
≥
V
IH
(min), CS
≥
V
IH
(min), tcc =10ns
Input signals are charged one time during 20
CKE
≥
V
IH
(min), CK
≤V
IL
(max), t
CC
=
∞
Input signals are stable
CKE
≥
V
IL
(max), t
CC
= 10ns
CKE & CK
≤
V
IL
(max), t
CC
=
∞
CKE
≥
V
IH
(min), CS
≥
V
IH
(min), tcc = 10ns
Input signals are changed one time during 20ns
CKE
≥
V
IH
(min), CK
≤
V
IL
(max), tcc =
∞
Input signals are stable
Io = mA
Page burst
4 Banks activated
t
CCD
= 2CK
t
RC
≥
t
RC
(min)
CKE
≤
0.2V
Conditions
133
1,580
100
1,490
Units
mA
Note
1
I
CC2P
I
CC2PS
I
cc2N
I
cc2NS
I
CC3P
I
CC3PS
I
CC3N
I
CC3NS
I
CC4
368
20
494
mA
mA
128
404
56
620
227
mA
mA
mA
Active standby current in
power-down mode
Active standby current in
non power-down mode
Operating current (Burst mode)
Refresh current
Self refresh current
I
CC5
I
CC6
1,760
2,480
1,535
2,390
mA
mA
mA
1
2
377
Notes: 1. Measured with outputs open.
2. Refresh period is 64ms.
3. Measured with 1 PLL & 2 Drive ICs.
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
Sept. 2002
Rev. 0
4
White Electronic Designs Corporation • (602) 437-1520 • www.whiteedc.com
White Electronic Designs
ORDERING INFORMATION
Part Number
WED3DG7232V10D2
WED3DG7232V7D2
WED3DG7232V75D2
Speed
100MHz
133MHz
133MHz
CAS Latency
CL=2
CL=2
CL=3
WED3DG7232V-D2
PACKAGE DIMENSIONS
½½½½½½½½½
½½½½½½½½½
½½½½½
½½½
½½½½½½½½½
½½
½½½½
½½½½½
½½½½
½½½½
½½½½
½½½½½
½½½½
½½½½½
½½½½½
½½½½½
½½½½
½½½½
½½½½
½½½½½½½½½½½½
ALL DIMENSIONS ARE IN INCHES
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
Sept. 2002
Rev. 0
5
White Electronic Designs Corporation • (602) 437-1520 • www.whiteedc.com
