W3DG648V7D1 查看數據表（PDF） - White Electronic Designs Corporation
零件编号
产品描述 (功能)
生产厂家
W3DG648V7D1 Datasheet PDF : 6 Pages
| |||
White Electronic Designs
W3DG648V-D1
64MB – 2x4Mx64 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
Dual Rank
144 pin SO-DIMM JEDEC
• D1: 27.94mm (1.10")
DESCRIPTION
The W3DG648V is a 2x4Mx64 synchronous DRAM module
which consists of eight 4Mx16 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 module is structured as 2 ranks of 8Mx64 SDRAM.
* This product 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 BACK PIN FRONT PIN BACK PIN BACK PIN BACK
1
VSS
2
VSS 49 DQ13 50 DQ45 97 DQ22 98 DQ54
3 DQ0 4 DQ32 51 DQ14 52 DQ46 99 DQ23 100 DQ55
5
DQ1
6 DQ33 53 DQ15 54 DQ47 101
VCC
102
VCC
7
DQ2
8 DQ34 55
VSS
56
VSS 103
A6
104
A7
9
DQ3 10 DQ35 57
NC 58 NC 105
A8
106 BA0
11
VCC
12
VCC
59
NC
60
NC 107
VSS
108
VSS
13 DQ4 14 DQ36 61 CLK0 62 CKE0 109
A9
110 BA1
15 DQ5 16 DQ37 63
VCC
64
VCC 111 A10/AP 112
A11
17 DQ6 18 DQ38 65 RAS# 66 CAS# 113
VCC
114
VCC
19 DQ7 20 DQ39 67 WE# 68 CKE1 115 DQMB2 116 DQMB6
21
VSS
22
VSS
69 CS0# 70
NC 117 DQMB3 118 DQMB7
23 DQMB0 24 DQMB4 71 CS1# 72
NC 119
VSS
120
VSS
25 DQMB1 26 DQMB5 73 NC 74 CLK1 121 DQ24 122 DQ56
27
VCC
28
VCC
75
VSS
76
VSS 123 DQ25 124 DQ57
29
A0
30
A3
77
NC 78 NC 125 DQ26 126 DQ58
31
A1
32
A4
79
NC 80 NC 127 DQ27 128 DQ59
33
A2
34
A5
81
VCC
82
VCC 129
VCC
130
VCC
35
VSS
36
VSS
83 DQ16 84 DQ48 131 DQ28 132 DQ60
37 DQ8 38 DQ40 85 DQ17 86 DQ49 133 DQ29 134 DQ61
39 DQ9 40 DQ41 87 DQ18 88 DQ50 135 DQ30 136 DQ62
41 DQ10 42 DQ42 89 DQ19 90 DQ51 137 DQ31 138 DQ63
43 DQ11 44 DQ43 91
VSS
92
VSS 139
VSS
140
VSS
45 VCC 46 VCC 93 DQ20 94 DQ52 141 SDA** 142 SCL**
47 DQ12 48 DQ44 95 DQ21 96 DQ53 143 VCC 144 VCC
PIN NAMES
A0 – A11
BA0-1
DQ0-63
CLK0, CLK1
CKE0, CKE1
CS0#, CS1#
RAS#
CAS#
WE#
DQMB0-7
VCC
VSS
SDA
SCL
DNU
NC
Address Input (Multiplexed)
Select Bank
Data Input/Output
Clock Input
Clock Enable Input
Chip Select Input
Row Address Strobe
Column Address Strobe
Write Enable
DQMB
Power Supply (3.3V)
Ground
Serial Data I/O
Serial Clock
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.
July 2005
Rev. 6
1
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
Share Link: 