WED9LAPC2C16V8BC
White Electronic Designs
512K x 32 SSRAM / 1M x 64 SDRAM
EXTERNAL MEMORY SOLUTION FOR LUCENT’S LUCTAPC640 ATM PORT CONTROLLER
FEATURES
DESCRIPTION
The WED9LAPC2C16V8BC is a 3.3V, 512K x 32
Synchronous Pipeline SRAM and a 1M x 64 Synchronous
DRAM array packaged in a 21mm x 21mm 192 lead
BGA.
Clock speeds:
SSRAM: 100 MHz
SDRAM: 100 MHz
100% tested to timing requirements of
LUCTAPC640’s memory interface
The WED9LAPC2C16V8BC provides the memory
required for the CRAM (Control Memory) and VCRAM
(Virtual Connection Memory) memory ports for Lucent’s
LUCTAPC640ATM port controller. When used in conjunction
with the WED9LAPC2B16P8BC, which provides memory for
the BRAM (Buffer Memory) and PRAM (Pointer Memory)
memory ports, the entire memory requirement of the
LUCTAPC640 can be met using these 2 BGA devices.
Packaging:
192 pin BGA, 21mm x 21mm
3.3V Operating supply voltage
Direct control interface to both the CRAM and
VCRAM ports on the LUCTAPC640
The WED9LAPC2C16V8BC is 100% tested to the timing
requirements of the LUCTAPC640’s memory interface
timing for both Commercial and Industrial temperature
ranges.
62% space savings vs. monolithic solution
Reduced system inductance and capacitance
PIN CONFIGURATION
PINOUT CRAM AND VCRAM MCM -- TOP VIEW
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
CADDR
CADDR
VCC
CDATA
CDATA
VSS
CDATA
CDATA
VCC
CDATA
CDATA
VSS
CDATA
CDATA
VCC
CADDR
A
B
C
D
E
CWE#
COE#
VSS
CADDR
CADDR
CADDR
VSS
CDATA
CDATA
CADDR
NC
CDATA
CDATA
VCC
CDATA
CDATA
VCC
CDATA
CDATA
VCC
CDATA
CDATA
VSS
CDATA
CDATA
VSS
CDATA
CDATA
VSS
CDATA
CDATA
VCC
CDATA
CDATA
VCC
CDATA
CDATA
VCC
CDATA
CDATA
VSS
CDATA
CDATA
CADDR
CADDR
CADDR
CADDR
CADDR
CADDR
CADDR
CADDR
CADDR
CADDR
GCK
VCC
VSS
VSS
VCDATA_b
VCDATA_b
VCDATA_b
VCDATA_b
VCDATA_b
VCDATA_b
VCDATA_b
VCDATA_b
VCDATA_b
VCDATA_b
VCDATA_b
VSS
VCC
VSS
VCC
VCC
VSS
VSS
VSS
VCC
VCC
VCC
CADDR0
CADDR1
VSS
F
G
H
J
VCDATA_b VCDATA_b
VCDATA_b VCDATA_b
VCDATA_a VCDATA_a VCDATA_a
VCDATA_a VCDATA_a VCDATA_a
VSS
VCC
VCDATA_b
VSS
VCDATA_a VCDATA_a
VCC
VCDATA_b VCDATA_b
VCDATA_b VCDATA_b
VCC
VCDATA_a VCDATA_a VCDATA_a
VCDATA_a VCDATA_a VCDATA_a
K
L
VCC
VSS
VCDATA_b
VCC
VCDATA_a VCDATA_a
VSS
M
N
P
R
T
VCDATA_b VCDATA_b
VCDATA_b VCDATA_b
VSS
VSS
VSS
VSS
VCC
VCC
VCC
VSS
VSS
VSS
VSS
VCC VCDATA_a VCDATA_a
VCDATA_b
VCDATA_b
VCDATA_b
VCDATA_b
VCBS
VCADDR0 VCADDR2
VCADDR10
VCADDR4
VCADDR5
VCADDR6
VCADDR7
VCADDR9/AP
VCDATA_a VCDATA_a VCDATA_a VCDATA_a VCDATA_a
VCDATA_a VCDATA_a VCDATA_a VCDATA_a VCC
VCDATA_a VCDATA_a VSS VCDATA_a VCDATA_a
VCC
VCDATA_b
VCADDR8 VCADDR1 VCADDR3
VCCAS# VCWE# VCRAS#
VCDATA_a
VCC
VCDATA_b VCDATA_b
VCDQM
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
July, 2000
1
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
July 2000 Rev. 0
Rev. 0
ECO #15168