White Electronic Designs
16Mx32 SDRAM
FEATURES
40% Space Savings vs. Monolithic Solution
Reduced System Inductance and Capacitance
3.3V Operating Supply Voltage
Fully Synchronous to Positive Clock Edge
Clock Frequencies of 100MHz - 133MHz
Burst Operation
• Sequential or Interleave
• Burst Length = Programmable 1, 2, 4, 8
or Full Page
• Burst Read and Write
• Multiple Burst Read and Single Write
Data Mask Control Per Byte
Auto and Self Refresh
Automatic and Controlled Precharge Commands
Suspend Mode and Power Down Mode
119 Pin BGA, 17mm x 23mm
WED3DL3216V
DESCRIPTION
The WED3DL3216V is an 16Mx32 Synchronous DRAM
configured as 4x4Mx32. The SDRAM BGA is constructed
with two 16Mx16 SDRAM die mounted on a multi-layer
laminate substrate and packaged in a 119 lead, 17mm
by 23mm, BGA.
The WED3DL3216V is available in clock speeds
of 133MHz, 125MHz, and 100MHz. The range of
operating frequencies, programmable burst lengths and
programmable latencies allow the same device to be
useful for a variety of high bandwidth, high performance
memory system applications.
The package and design provides performance
enhancements via a 50% reduction in capacitance vs.
two monolithic devices. The design includes internal
ground and power planes which reduces inductance
on the ground and power pins allowing for improved
decoupling and a reduction in system noise.
PIN CONFIGURATION
(Top view)
1
A
B
C
D
E
F
G
H
J
K
L
M
N
P
R
T
U
V
CCQ
NC
NC
DQC
DQC
V
CCQ
DQC
DQC
V
CCQ
DQD
DQD
V
CCQ
DQD
DQD
NC
NC
V
CCQ
1
2
NC
NC
NC
NC
DQC
DQC
DQC
DQC
V
CC
DQD
DQD
DQD
DQD
NC
A6
NC
NC
2
3
4
BA0
NC
A12
CAS#
BA1
V
CC
NC
V
SS
V
SS
CE#
V
SS
RAS#
DQMC NC
CKE
V
SS
NC
V
CC
V
SS
CK
DQMD NC
V
SS
WE#
V
SS
A1
V
SS
NC
A5
NC
3
A0
V
CC
A4
NC
4
5
A10
A11
A9
V
SS
V
SS
V
SS
DQMB
V
SS
NC
V
SS
DQMA
V
SS
V
SS
V
SS
NC
A3
NC
5
6
A7
NC
A8
NC
DQB
DQB
DQB
DQB
V
CC
DQA
DQA
DQA
DQA
NC
A2
NC
NC
6
7
V
CCQ
NC
NC
DQB
DQB
V
CCQ
DQB
DQB
V
CCQ
DQA
DQA
V
CCQ
DQA
DQA
NC
NC
V
CCQ
7
A
B
C
D
E
F
G
H
J
K
L
M
N
P
R
T
U
PIN DESCRIPTION
A0 – A12
BA0-1
DQ
CK
CKE
DQM
RAS#
CAS#
CE#
V
CC
V
CCQ
V
SS
Address Bus
Bank Select Addresses
Data Bus
Clock
Clock Enable
Data Input/Output Mask
Row Address Strobe
Column Address Strobe
Chip Enable
Power Supply pins, 3.3V
Data Bus Power Supply pins,3.3V
Ground pins
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
January, 2004
Rev. 0
1
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
WEDC [ WHITE ELECTRONIC DESIGNS CORPORATION ]
