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7025ERPQI35

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

MAXWELL TECHNOLOGIES 

7025E

(8K x 16-Bit) Dual Port RAM

High-Speed CMOS

Logic Diagram

FEATURES:

• 8K x 16-bit dual port RAM

- Stand Alone

- Master Slave

• RAD-PAK® radiation-hardened against natural space

radiation

• Total dose hardness:

- > 100 krad (Si), depending upon space mission

• Excellent Single Event Effects:

-SELTH LET = >100 MeV/mg/cm2

-SEUTH LET = 7 MeV/mg/cm2

• Package:

-84 Pin RAD-PAK® quad flat pack

• Separate upper byte and lower byte control for multiplexed

bus compatibility

• High speed access time: 35/45 ns

• Expandable to 32 bits or more using master/slave select

when cascading

• 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

DESCRIPTION:

Maxwell Technologies’ 7025E Dual Port RAM High Speed

CMOS® 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 RAD-PAK® 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, RAD-PAK provides greater than 100

krad (Si) radiation dose tolerance. This product is available

with screening up to Class S.

1000586

12.19.01 Rev 2

(619) 503-3300- Fax: (619) 503-3301- www.maxwell.com

All data sheets are subject to change without notice 1

©2001 Maxwell Technologies

All rights reserved.

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