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7025ERPQB-45 Datasheet

  • 7025ERPQB-45

  • (8K x 16-Bit) Dual Port RAM High-Speed CMOS

  • 524.68KB

  • 20頁(yè)

  • MAXWELL

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(8K x 16-Bit) Dual Port RAM
High-Speed CMOS
7025E
Memory
Logic Diagram
F
EATURES
:
鈥?8K x 16-bit dual port RAM
- Stand Alone
- Master Slave
鈥?R
AD
-P
AK
廬 radiation-hardened against natural space
radiation
鈥?Total dose hardness:
- > 100 krad (Si), depending upon space mission
鈥?Excellent Single Event Effects:
-SEL
TH
LET = >100 MeV/mg/cm
2
-SEU
TH
LET = 7 MeV/mg/cm
2
鈥?Package:
-84 Pin R
AD
-P
AK
廬 quad flat pack
鈥?Separate upper byte and lower byte control for multiplexed
bus compatibility
鈥?High speed access time: 35/45 ns
鈥?Expandable to 32 bits or more using master/slave select
when cascading
鈥?High speed CMOS technology
-TTL compatible, single 5V power supply
-Interrupt flag for port-to-port communication
-On chip port arbitration logic
-Asynchronous operation from either port
D
ESCRIPTION
:
Maxwell Technologies鈥?7025E Dual Port RAM High Speed
CMOS廬 microcircuit features a greater than 100 krad (Si) total
dose tolerance, depending upon space mission. The 7025E is
designed to be used as a stand-alone 128k-bit Dual Port RAM
or as a combination MASTER/SLAVE Dual-Port RAM for 32-
bit or more word systems. This design results in full-speed,
error-free operation without the need for additional discrete
logic. The 7025E provides two independent ports with sepa-
rate control, address, and I/O pins that permit independent,
asynchronous access for reads or writes to any location in
memory. An automatic power down feature controlled by CS
permits the on-chip circuitry of each port to enter a very low
standby power mode.
Maxwell Technologies' patented R
AD
-P
AK
廬 packaging technol-
ogy incorporates radiation shielding in the microcircuit pack-
age. It eliminates the need for box shielding while providing
the required radiation shielding for a lifetime in orbit or space
mission. In a GEO orbit, R
AD
-P
AK
provides greater than 100
krad (Si) radiation dose tolerance. This product is available
with screening up to Class S.
08.15.02 Rev 2
All data sheets are subject to change without notice
1
(619) 503-3300- Fax: (619) 503-3301- www.maxwell.com
漏2002 Maxwell Technologies
All rights reserved.

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