White Electronic Designs
32MB - 4M x 64 SDRAM UNBUFFERED
FEATURES
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
168 pin DIMM JEDEC
W3DG644V-D2
PRELIMINARY*
DESCRIPTION
The W3DG644V is a 4M x 64 synchronous DRAM module
which consists of four 4M x 16 SDRAM components 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.
*This product is under development, is not qualified or characterized and is subject to
change without notice.
PIN CONFIGURATIONS (FRONT SIDE/BACK SIDE)
PIN FRONT
1
V
SS
2
DQ0
3
DQ1
4
DQ2
5
DQ3
6
V
CC
7
DQ4
8
DQ5
9
DQ6
10
DQ7
11
DQ8
12
V
SS
13
DQ9
14 DQ10
15 DQ11
16 DQ12
17 DQ13
18
V
CC
19 DQ14
20 DQ15
21
NC
22
NC
23
V
SS
24
NC
25
NC
26
V
CC
27
WE#
28 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
FRONT
DQM1
CS0#
DNU
V
SS
A0
A2
A4
A6
A8
A10/AP
BA1
V
CC
V
CC
CLK0
V
SS
DNU
CS2#
DQM2
DQM3
DNU
V
CC
NC
NC
NC
NC
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
NC
NC
V
SS
DQ21
DQ22
DQ23
V
SS
DQ24
DQ25
DQ26
DQ27
V
CC
DQ28
DQ29
DQ30
DQ31
V
SS
CLK2
NC
*WP
**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
NC
NC
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
NC
NC
V
SS
CKE0
NC
DQM6
DQM7
NC
V
CC
NC
NC
NC
NC
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
NC
DNU
V
SS
DQ53
DQ54
DQ55
V
SS
DQ56
DQ57
DQ58
DQ59
V
CC
DQ60
DQ61
DQ62
DQ63
V
SS
NC
NC
**SA0
**SA1
**SA2
V
CC
A0 – A11
BA0-1
DQ0-63
CLK0,CLK2
CKE0
CS0#,CS2#
RAS#
CAS#
WE#
DQM0-7#
V
CC
V
SS
SDA
SCL
DNU
NC
PIN NAMES
Address input (Multiplexed)
Select Bank
Data Input/Output
Clock input
Clock Enable input
Chip select Input
Row Address Strobe
Column Address Strobe
Write Enable
DQM
Power Supply (3.3V)
Ground
Serial data I/O
Serial clock
Do not use
No Connect
* WP (write protect) option available on pin 81, see
ordering information on page 5.
** 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.
July 2004
Rev 1
1
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
White Electronic Designs
FUNCTIONAL BLOCK DIAGRAM
CSO#
DQM0
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
DQM1
DQ8
DQ9
DQ10
DQ11
DQ12
DQ13
DQ14
DQ15
CS2#
DQM2
DQ16
DQ17
DQ18
DQ19
DQ20
DQ21
DQ22
DQ23
DQM3
DQ24
DQ25
DQ26
DQ27
DQ28
DQ29
DQ30
DQ31
LDQM
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
UDQM
DQ8
DQ9
DQ10
DQ11
DQ12
DQ13
DQ14
DQ15
LDQM
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
UDQM
DQ8
DQ9
DQ10
DQ11
DQ12
DQ13
DQ14
DQ15
DQM4
W3DG644V-D2
PRELIMINARY
CS#
DQ32
DQ33
DQ34
DQ35
DQ36
DQ37
DQ38
DQ39
DQM5
DQ40
DQ41
DQ42
DQ43
DQ44
DQ45
DQ46
DQ47
U0
LDQM
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
UDQM
DQ8
DQ9
DQ10
DQ11
DQ12
DQ13
DQ14
DQ15
CS#
U2
DQM6
CS#
DQ48
DQ49
DQ50
DQ51
DQ52
DQ53
DQ54
DQ55
DQM7
DQ56
DQ57
DQ58
DQ59
DQ60
DQ61
DQ62
DQ63
U1
LDQM
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
UDQM
DQ8
DQ9
DQ10
DQ11
DQ12
DQ13
DQ14
DQ15
CS#
U3
A0–A11,BA0 &1
RAS#
CAS#
WE#
CKE0
10Ω
SDRAMU0–U3
SDRAMU0–U3
SDRAMU0–U3
SDRAMU0–U3
SDRAMU0–U3
SERIAL PD
SCL
WP
47Ω
SDA
A0
A1
SA1
A2
SA2
SA0
DQ0-63
Every DQpin of SDRAM
V
CC
TWO 0.1 uF CAPACITORS
PER EACH SDRAM
To all SDRAMS
V
CC
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
July 2004
Rev 1
2
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.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
4
50
W3DG644V-D2
PRELIMINARY
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, 0°C ≤ T
A
≤ 70°C
Parameter
Supply Voltage
Input High Voltage
Input Low Voltage
Output High Voltage
Output Low Voltage
Input Leakage Current
Note:
1.
2.
3.
V
IH
(max)= 5.6V AC. The overshoot voltage duration is
≤
3ns.
V
IL
(min)= -2.0V AC. The undershoot voltage duration is
≤
3ns.
Any input 0V
≤
V
IN
≤
V
CCQ
Input leakage currents include Hi-Z output leakage for all bi-directional buffers with Tri-State outputs.
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
Unit
V
V
V
V
V
A
Note
1
2
I
OH
= -2mA
I
OL
= -2mA
3
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 (CLK0,CLK2)
Input Capacitance (CS0#,CS2#)
Input Capacitance (DQM0-DQM7)
Input Capacitance (BA0-BA1)
Data input/output capacitance (DQ0-DQ63)
Symbol
C
IN1
C
IN2
C
IN3
C
IN4
C
IN5
C
IN6
C
IN7
C
OUT
Max
25
25
25
13
15
8
25
10
Unit
pF
pF
pF
pF
pF
pF
pF
pF
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
July 2004
Rev 1
3
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
White Electronic Designs
OPERATING CURRENT CHARACTERISTICS
(V
CC
= 3.3V, 0°C
≤
T
A
≤
70°C)
Parameters
Symbol
Conditions
Versions
133
Operating Current
(One bank active)
Precharge Standby Current
in Power Down Mode
Precharge Standby Current
in Non-Power Down Mode
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), t
CC
=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), t
CC
= 10ns
Input signals are charged one time during 20ns
CKE ≥ V
IH
(min), CK ≤ V
IL
(max), t
CC
= ∞
input signals are stable
Io = mA
Page burst
4 Banks activated
t
CCD
= 2CK
t
RC
≥ t
RC
(min)
CKE ≤ 0.2V
460
300
W3DG644V-D2
PRELIMINARY
100
300
Units
mA
Note
1
I
CC2P
I
CC2PS
I
CC2N
I
CC2NS
4
4
48
24
8
8
80
mA
mA
mA
mA
mA
Active standby current in power-
down mode
Active standby in current non
power-down mode
I
CC3P
I
CC3PS
I
CC3N
mA
I
CC3NS
Operating current (Burst mode)
I
CC4
40
460
mA
mA
1
Refresh current
Self refresh current
Notes: 1. Measured with outputs open.
2. Refresh period is 64ms.
I
CC5
I
CC6
360
4
360
mA
mA
2
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
July 2004
Rev 1
4
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
White Electronic Designs
ORDERING INFORMATION
Part Number
W3DG644V10D2
W3DG644V7D2
W3DG644V75D2
Speed
100MHz
133MHz
133MHz
CAS Latency
CL=2
CL=2
CL=3
Height*
25.40 (1.00")
25.40 (1.00")
25.40 (1.00")
Part Number
W3DG634V10D2
W3DG634V7D2
W3DG634V75D2
Speed
100MHz
133MHz
133MHz
W3DG644V-D2
PRELIMINARY
CAS Latency
CL=2
CL=2
CL=3
Height*
25.40 (1.00")
25.40 (1.00")
25.40 (1.00")
Note: Modules are available in industrial temperature - 40°C
≤
T
A
≤
85°C.
Add an "I" to the end of the part number.
Note: Available with WP (write protect) on pin 81.
PACKAGE DIMENSIONS
133.48 (5.255) MAX.
0.00 (0.125) (2X)
278
3.81
(0.150)
MAX.
25.40
(1.000)
MAX
3.99
(0.157)
(2X)
17.78
(0.700)
P1
11.43
(0.450)
8.89
(0.350)
15.60 (0.614)
36.83 (1.450)
6.35 (0.250)
57.79 (2.275)
115.57 (4.550)
54.61 (2.150)
3.99
(0.157)
MIN
1.27 ± 0.10
(0.050 ± 0.0039)
* ALL DIMENSIONS ARE IN MILLIMETERS AND (INCHES)
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
July 2004
Rev 1
5
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
