Description

The AT27C400 is a low-power, high-performance 4,194,304-bit one-time programmable read only memory (OTP EPROM) organized as either 256K by 16 or 512K by 8 bits. It requires a single 5V power supply in normal read mode operation. Any word can be accessed in less than 70 ns, eliminating the need for speed-reducing WAIT states. The by-16 organization makes this part ideal for high-performance 16- and 32-bit microprocessor systems.

Features

? Fast Read Access Time - 70 ns

? Word-wide or Byte-wide Configurable

? 4 Megabit Flash and Mask ROM Compatible

? Low Power CMOS Operation

– 100 μA Maximum Standby

– 50 mA Maximum Active at 5 MHz

? Wide Selection of JEDEC Standard Packages

– 40-Lead 600 mil PDIP

– 40-Lead SOIC (SOP)

– 48-Lead TSOP (12 mm x 20 mm)

? 5V ± 10 Power Supply

? High Reliability CMOS Technology

– 2,000V ESD Protection

– 200 mA Latchup Immunity

? Rapid?Programming Algorithm - 50 μs/word (typical)

? CMOS and TTL Compatible Inputs and Outputs

? Integrated Product Identification Code

? Commercial and Industrial Temperature Ranges