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32C408BRPFB-25 Datasheet

  • 32C408BRPFB-25

  • 4 Megabit (512K x 8-Bit) SRAM

  • 11頁

  • MAXWELL

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32C408B
4 Megabit (512K x 8-Bit) SRAM
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A0
A1
A2
A3
A4
CS
I/O1
I/O2
Vcc
Vss
I/O3
I/O4
WE
A5
A6
A7
A8
A9
1
36
NC
A18
A17
A16
A15
OE
I/O8
I/O7
ROW
DECODER
MEMORY MATRIX
1024 ROWS x 4096 COLUMNS
DQ0
32C408B
Vss
Vcc
I/O6
I/O5
A14
A13
A12
A11
A10
CS
DQ7
COLUMN I/O
INPUT
DATA
CONTROL
COLUMN DECODER
A18
A17
A16
A15
A14
A3
A2
A1
A0
DQ0
Memory
WE
OE
DQ7
18
19
NC
Logic Diagram
F
EATURES
:
鈥?512k x 8-bit CMOS architecture
鈥?R
AD
-P
AK
廬 technology hardened against natural space radi-
ation
鈥?Total dose hardness:
- > 100 krad (Si), depending upon space mission
鈥?Single event effect:
- SEL
TH
: > 68 MeV/mg/cm
2
- SEU
TH
: < 3MeV/mg/cm
2
- SEU saturated cross section: 6E-9 cm
2
/bit
鈥?Package:
-36 pin R
AD
-P
AK
廬 flat pack
鈥?Fast propagation time:
-20, 25, 30 ns maximum access time
鈥?Single 5V + 10% power supply
鈥?Low power dissipation:
- Standby: 60mA (TTL); 10mA (CMOS)
- Operating: 180 mA (20 ns); 170 mA (25 ns); 160 mA (30
ns)
鈥?TTL compatible inputs and outputs
鈥?Fully static operation
- No clock or refresh required
鈥?Three state outputs
D
ESCRIPTION
:
Maxwell Technologies鈥?32C408B high-speed 4 Megabit SRAM
microcircuit features a greater than 100 krad (Si) total dose
tolerance, depending upon space mission. Using R
AD
-P
AK
廬
packaging technology, the 32C408B realizes higher density,
higher performance and lower power consumption, and is well
suited for high-speed system application. Its fully static design
eliminates the need for external clocks, while the CMOS cir-
cuitry reduces power consumption and provides higher reli-
ability. The 32C408B is equipped with eight common input/
output lines, chip select and output enable, allowing for
greater system flexibility and eliminating bus contention.
Maxwell Technologies' patented R
AD
-P
AK
packaging technol-
ogy incorporates radiation shielding in the microcircuit pack-
age. In a GEO orbit, R
AD
-P
AK
can provides true greater than
100 krad (Si) total radiation dose tolerance; dependent upon
space mission. The patented radiation-hardened R
AD
-P
AK
technology incorporates radiation shielding in the microcircuit
package. It eliminates the need for box shielding while provid-
ing the required radiation shielding for a lifetime in orbit or a
space mission. This product is available with packaging and
screening up to Class S.
05.02.02 Rev 7
All data sheets are subject to change without notice
1
(858) 503-3300 - Fax: (858) 503-3301 - www.maxwell.com
漏2002 Maxwell Technologies
All rights reserved.

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