7025E Dual Port Ram (8k x 16-bit), High Speed CMOS				7025E Information - Product Datasheet - Product Flow - Back to Memory

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 separate 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 technology incorporates radiation shielding in the microcircuit package. 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.