White Electronic Designs
FEATURES
n
n
n
n
n
n
n
Fast clock speed: 225, 200, 166 and 150MHz
Fast access times: 2.8, 3.0, 3.5 and 3.8ns
Fast OE access times: 2.8, 3.0, 3.5 and 3.8ns
Separate Core and I/O Power Supply
Snooze Mode for reduced-standby power
Individual Byte Write control
Clock-controlled and registered addresses, data I/Os
and control signals
WED2ZL362MSJ
Advanced
72Mb, 2M x 36 Synchronous Pipeline Burst NBL SRAM
DESCRIPTION
n
Burst control (interleaved or linear burst)
n
Packaging:
聲 119-bump BGA package, JEDEC Pin Definition
n
Low capacitive bus loading
The WEDC SyncBurst - SRAM family employs high-
speed, low-power CMOS designs that are fabricated
using an advanced CMOS process. WEDC聮s 72Mb
SyncBurst SRAMs integrate two 2M x 18 SRAMs into a
single BGA package to provide a 2M x 36 configuration.
All synchronous inputs pass through registers con-
trolled by a positive-edge-triggered single-clock input
(CLK). The NBL or No Bus Latency Memory utilizes all
the bandwidth in any combination of operating cycles.
Address, data inputs, and all control signals except
output enable and linear burst order are synchronized
to input clock. Burst order control must be tied 聯(lián)High or
Low.聰 Asynchronous inputs include the sleep mode en-
able (ZZ) and Output Enable (OE). Write cycles are in-
ternally self-timed and initiated by the rising edge of the
clock input. This feature eliminates complex off-chip
write pulse generation and provides increased timing
flexibility for incoming signals.
FIG. 1
PIN CONFIGURATION
(TOP VIEW)
1
A
B
C
D
E
F
G
H
J
K
L
M
N
P
R
T
U
V
DDQ
NC
NC
DQ
C
DQ
C
V
DDQ
DQ
C
DQ
C
V
DDQ
DQ
D
DQ
D
V
DDQ
DQ
D
DQ
D
NC
NC
V
DDQ
2
SA
CE
2
SA
DQP
C
DQ
C
DQ
C
DQ
C
DQ
C
V
DD
DQ
D
DQ
D
DQ
D
DQ
D
DQP
D
SA
SA
RFU
3
SA
SA
SA
V
SS
V
SS
V
SS
BW
C
V
SS
NC
V
SS
BW
D
V
SS
V
SS
V
SS
LBO
SA
RFU
4
SA
ADV
V
DD
NC
CE
1
OE
SA
WE
V
DD
CLK
NC
CKE
SA
1
SA
0
V
DD
SA
RFU
5
SA
SA
SA
V
SS
V
SS
V
SS
BW
B
V
SS
NC
V
SS
BW
A
V
SS
V
SS
V
SS
NC
SA
RFU
6
SA
CE
2
SA
DQP
B
DQ
B
DQ
B
DQ
B
DQ
B
V
DD
DQ
A
DQ
A
DQ
A
DQ
A
DQP
A
SA
SA
NC
7
V
DDQ
NC
NC
DQ
B
DQ
B
V
DDQ
DQ
B
DQ
B
V
DDQ
DQ
A
DQ
A
V
DDQ
DQ
A
DQ
A
NC
ZZ
V
DDQ
BLOCK DIAGRAM
BW
C
BW
D
BW
A
BW
B
2M x 18
CLK
CKE
ADV
LBO
CE1
CE2
CE2
OE
WE
ZZ
CLK
CKE
ADV
LBO
CS1
CS2
CS2
OE
WE
ZZ
CLK
CKE
ADV
LBO
CS1
CS2
CS2
OE
WE
ZZ
2M x 18
Address Bus
(SA
0
帽 SA
20
)
DQ
C
, DQ
D
DQP
C
, DQP
D
DQ
A
, DQ
B
DQP
A
, DQP
B
DQ
A
帽
DQ
D
DQP
A
帽
DQP
D
July 2002 Rev 0
ECO # 15239
1
White Electronic Designs Corporation 聲 (508) 366-5151 聲 www.whiteedc.com