UT28F256LVQLE 3V 256K PROM

The PROM features fully asynchronous operation requiring no external clocks or timing strobes.  An advanced radiation-hardened twin-well CMOS process technology is used to implement the UT28F256LVQLE.  The combination of radiation hardness, fast access time, and low power consumption make the PROM ideal for high-speed systems designed for operation in harsh environments.

Features:

• 256Kb, 32K x 8-bit 

• +3.3V Single Supply Voltage

• Supported by industry standard programmer

• 65ns maximum address access time (-55°C to +125°C)

• TTL compatible input and TTL/CMOS compatible output levels

• Three-state data bus

• Low operating and standby current

  • Operating 50mA maximum @ 15.4MHz

    • Derating 1.7mA/MHz

  • Standby 1.0mA maximum (post-rad)

• No post program conditioning

Applications:

• Boot Code Storage for Microcontrollers and Microprocessors

Operational Environment:

• Temperature Range: -55°C to +125°C

• Total Ionizing Dose: <1000 krad (Si)

• SEL Immune: ≤110 MeV-cm2/mg

Physical:

• 28-Lead Ceramic Flatpack
  50 mil pitch

Power:

• 40mW (typical during 100% read cycling)

Flight Grade:

• QML-Q, QML-V