Description
The AT27C040 chip is a low-power, high-performance, 4,194,304-bit one-time programmable read-only memory (OTP EPROM) organized as 512K by 8 bits. The AT27C040 requires only one 5V power supply in normal read mode operation. Any byte can be accessed in less than 70 ns, eliminating the need for speed reducing WAIT states on high-performance microprocessor systems.

Features
• Fast Read Access Time – 70 ns
• Low Power CMOS Operation
   – 100 µA Max Standby
   – 30 mA Max Active at 5 MHz
• JEDEC Standard Packages
   – 32-lead PDIP
   – 32-lead PLCC
   – 32-lead TSOP
• 5V ±10% Supply
• High Reliability CMOS Technology
   – 2000V ESD Protection
   – 200 mA Latchup Immunity
• Rapid Programming Algorithm – 100 µs/Byte (Typical)
• CMOS and TTL Compatible Inputs and Outputs
• Industrial Temperature Range
• Green (Pb/Halide-free) Packaging Option