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PDF WED3DG7264V-D1 Data sheet ( Hoja de datos )
| Número de pieza | WED3DG7264V-D1 | |
| Descripción | 512MB - 2x32Mx72 SDRAM | |
| Fabricantes | White Electronic Designs | |
| Logotipo |  |
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Whitewww.datasheet4u.com Electronic Designs
WED3DG7264V-D1
PRELIMINARY*
512MB – 2x32Mx72 SDRAM, UNBUFFERED w/PLL
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
• D1: 31.75mm (1.25”)
DESCRIPTION
The WED3DG7264V is a 2x32Mx72 synchronous DRAM
module which consists of eighteen 32Mx8 stack SDRAM
components in TSOP II package, and one 2Kb EEPROM
in an 8 pin TSSOP 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 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
1 VSS 2
3 DQ0 4
5 DQ1 6
7 DQ2 8
9 DQ3 10
11 VCC 12
13 DQ4 14
15 DQ5 16
17 DQ6 18
19 DQ7 20
21 VSS 22
23 DQM0 24
25 DQM1 26
27 VCC 28
29 A0 30
31 A1 32
33 A2 34
35 VSS 36
37 DQ8 38
39 DQ9 40
41 DQ10 42
43 DQ11 44
45 VCC 46
47 DQ12 48
BACK
VSS
DQ32
DQ33
DQ34
DQ35
VCC
DQ36
DQ37
DQ38
DQ39
VSS
DQM4
DQM5
VCC
A3
A4
A5
VSS
DQ40
DQ41
DQ42
DQ43
VCC
DQ44
PIN FRONT PIN
49 DQ13 50
51 DQ14 52
53 DQ15 54
55 VSS 56
57 CB0 58
59 CB1 60
61 CLK0 62
63 VCC 64
65 RAS# 66
67 WE# 68
69 CS0# 70
71 CS1# 72
73 NC 74
75 VSS 76
77 CB2 78
79 CB3 80
81 VCC 82
83 DQ16 84
85 DQ17 86
87 DQ18 88
89 DQ19 90
91 VSS 92
93 DQ20 94
95 DQ21 96
BACK
DQ45
DQ46
DQ47
VSS
CB4
CB5
CKE0
VCC
CAS#
CKE1
A12
NC
NC
VSS
CB6
CB7
VCC
DQ48
DQ49
DQ50
DQ51
VSS
DQ52
DQ53
PIN FRONT PIN
97 DQ22 98
99 DQ23 100
101 VCC 102
103 A6 104
105 A8 106
107 VSS 108
109 A9 110
111 A10 112
113 VCC 114
115 DQM2 116
117 DQM3 118
119 VSS 120
121 DQ24 122
123 DQ25 124
125 DQ26 126
127 DQ27 128
129 VCC 130
131 DQ28 132
133 DQ29 134
135 DQ30 136
137 DQ31 138
139 VSS 140
141 SDA 142
143 VCC 144
BACK
DQ54
DQ55
VCC
A7
BA0
VSS
BA1
A11
VCC
DQM6
DQM7
VSS
DQ56
DQ57
DQ58
DQ59
VCC
DQ60
DQ61
DQ62
DQ63
VSS
SCL
VCC
PIN NAMES
A0 – A12
BA0-1
DQ0-63
CLK0
CB0-7
CKE0,CKE1
CS0#,CS1#
RAS#
CAS#
WE#
DQM0-7
VCC
VSS
SDA
SCL
Address Input (Multiplexed)
Select Bank
Data Input/Output
Clock Input
Check Bit (Data-In/Data-Out)
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
DNU Do Not Use
NC 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.
July 2005
Rev. 4
1 White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
1 page  
Whitewww.datasheet4u.com Electronic Designs
WED3DG7264V-D1
PRELIMINARY
ELECTRICAL CHARACTERISTICS AND RECOMMENDED AC OPERATING CONDITIONS
VCC = 3.3V ±0.3V, 0°C ≤ TA ≤ +70°C
AC CHARACTERISTICS
7 75/10
PARAMETER
Access time from CLK (pos. edge)
Address hold time
Address setup time
CLK high-level width
CLK low-level width
Clock cycle time
CKE hold time
CKE setup time
CS#, RAS#, CAS#, WE#, DQM hold time
CS#, RAS#, CAS#, WE#, DQM setup time
Data-in hold time
Data-in setup time
Data-out high-impedance time
Data-out low-impedance time
Data-out hold time (load)
Data-out hold time (no load)
ACTIVE to PRECHARGE command
ACTIVE to ACTIVE command period
ACTIVE to READ or WRITE delay
Refresh period (8,192 rows)
AUTO REFRESH period
PRECHARGE command period
ACTIVE bank a to ACTIVE bank b command
Transition time
WRITE recovery time
Exit SELF REFRESH to ACTIVE command
CL = 3
CL = 2
CL = 3
CL = 2
CL = 3
CL = 2
SYMBOL
tAC(3)
tAC(2)
tAH
tAS
tCH
tCL
tCK(3)
tCK(2)
tCKH
tCKS
tCMH
tCMS
tDH
tDS
tHZ(3)
tHZ(2)
tLZ
tOH
tOHN
tRAS
tRC
tRCD
tREF
tRFC
tRP
tRRD
tT
tWR
tXSR
MIN
0.8
1.5
2.5
2.5
7
7.5
0.8
1.5
0.8
1.5
0.8
1.5
1
2.7
1.8
37
60
15
66
15
14
0.3
1 CLK +
7ns
14
67
MAX
5.4
5.4
5.4
5.4
120K
64
1.2
MIN
0.8
1.5
2.5
2.5
7.5
10
0.8
1.5
0.8
1.5
0.8
1.5
1
2.7
1.8
44
66
20
66
20
15
0.3
1 CLK +
7ns
15
75
MAX
5.4
6
5.4
6
120K
64
1.2
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ms
ns
ns
ns
ns
-
NOTES
27
23
23
10
10
28
7
24
ns 14, 25
ns 20
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
July 2005
Rev. 4
5 White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet WED3DG7264V-D1.PDF ] | |
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