7025E
器件描述：(8K x 16-Bit) Dual Port RAM High-Speed CMOS
器件厂商：MAXWELL [Maxwell Technologies]
文件大小：524.28KB，共20页
Sponsor by e络盟器件资料摘要：
1
Memory
All data sheets are subject to change without notice
(619) 503-3300- Fax: (619) 503-3301- www.maxwell.com
(8K x 16-Bit) Dual Port RAM
7025E
©2002 Maxwell Technologies
All rights reserved.
High-Speed CMOS
08.15.02 Rev 2
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:
-SEL
TH
LET = >100 MeV/mg/cm
2
-SEU
TH
LET = 7 MeV/mg/cm
2
• 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.
Logic Diagram
Memory
All data sheets are subject to change without notice
(619) 503-3300- Fax: (619) 503-3301- www.maxwell.com
(8K x 16-Bit) Dual Port RAM
7025E
©2002 Maxwell Technologies
All rights reserved.
High-Speed CMOS
08.15.02 Rev 2
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:
-SEL
TH
LET = >100 MeV/mg/cm
2
-SEU
TH
LET = 7 MeV/mg/cm
2
• 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.
Logic Diagram