GENERAL DESCRIPTION
The EN27LV512 / EN27LV512B is a low voltage, low-power 512K bit, 3.3V one-timeprogrammable (OTP) read-only memory (EPROM). Organized into 64K words with 8 bits per word, it features QuikRiteTM single-address location programming, typically at 20µs per byte. Any byte can be accessed in less than 90ns. The EN27LV512 / EN27LV512B has separate Output Enable ( OE ) and Chip Enable ( CE ) controls which eliminate bus contention issues. The EN27LV512 has a Vcc tolerance range of 3.0V to 3.6V, making it suitable for use in systems that have regulated power supplies. The EN27LV512B has a Vcc tolerance range of 2.7V to 3.6V, making it ideally suited for battery operated systems.

FEATURES
• Read Access Time:
   -90ns, -120ns, -150ns, -200ns
• Single +3.3V Power Supply
   -Regulated power supply 3.0V - 3.6V (EN27LV512)
   -Unregulated power supply 2.7V - 3.6 V (EN27LV512B for battery operated systems)
• Programming Voltage +12.75V
• QuikRiteTM Programming Algorithm
• Typical programming time 20µs
• Low Power CMOS Operation
• 1µA Standby (Typical)
• 15mA Operation (Max.)
• CMOS- and TTL-Compatible I/O
• High-Reliability CMOS Technology
• Latch-Up Immunity to 100mA from -1V to VCC + 1V
• Two-Line Control ( OE & CE )
• Standard Product Identification Code
• JEDEC Standard Pinout
   • 28-pin PDIP
   • 32-pin PLCC
   • 28-pin TSOP (Type 1)
• Commercial and Industrial Temperature Ranges