4 Megabit, ROM Compatible CMOS EPROM

4 Megabit, ROM Compatible CMOS EPROM

4-Megabit 256K x 16 or 512K x 8 OTP EPROM

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

4 Mbit (512Kb x8 or 256Kb x16) UV EPROM and OTP EPROM

DESCRIPTION The M27C400 is an 4 Mbit EPROM offered in the two ranges UV (ultra violet erase) and OTP (one time programmable). It is ideally suited for microprocessor systems requiring large data or program storage. It is organised as either 512 Kwords of 8 bit or 256 Kwords of 16 bit. The pin-o