EDI8L21664V
TMS320C54x External SRAM Memory Solution
FEATURES
DESCRIPTION
n DSP Memory Solution
The EDI8L21664VxxBC is a 3.3V, 2x64Kx16 SRAM constructed
with two 64Kx16 die mounted on a multi-layer laminate substrate.
The device is packaged in a 74 lead, 15mm by 15mm, BGA.
Texas Instruments TMS320C54x
n 3.3V Operating Supply Voltage
Operating with a 3.3V power supply and with access times as fast
as 10ns, the device allows the user to develop a fast external
memory for Texas Instuments' TMS320C54x DSP.
n Access Times of 10, 12 and 15ns
n Single Write Control and Output Enable Lines
n One Chip Enable Line per Memory Bank
n 50% Space Savings vs. Monolithic TSOPs
n Upgrade Path Available in Same Footprint
n Multiple VCC and VSS Pins
The device consists of two separate banks of 64Kx16 of memory.
Each bank has a separate Chip Enable pin and higher order
address select pin. Bank 'A' is controlled using CE1\ and A15A.
Bank 'B' is controlled using CE2\ and A15B. The two banks have
common I/Os (DQ0-15) and control lines (WE\ and G\).
n Reduced Inductance and Capacitance
n 74 pin BGA, JEDEC MO-151
PIN CONFIGURATION
1
2
3
4
5
6
7
8
9
10
11
A
B
C
D
E
F
G
H
J
VSS VCC VCC DQ15 DQ14 VCC DQ13 DQ11 DQ9 DQ8 N/C A
VSS VCC VCC VSS VSS VCC DQ12 DQ10 DQ4 VCC VCC B
VSS VSS
VSS VSS
VSS VSS
A15A CE1\
VCC
VSS VCC C
VSS VCC D
VSS VCC E
DQ3 DQ7 F
DQ5 DQ0 G
DQ6 DQ1 H
N/C
WE\
VSS CE2\
VSS A14
VSS A12
A15B A13
VCC
VSS
VSS
DQ2 N\C
J
K
L
K
L
VCC A10
VCC A11
A8
A9
A6
A7
A4
VSS A5
A2
A0
A3
G\
A1
1
2
3
4
5
6
7
8
9
10
11
White Electronic Designs Corporation (508) 366-5151 www.whiteedc.com
Dec. 2002 Rev. 1
ECO #15721
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