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DESCRIPTION

The M27W400 is a low voltage 4 Mbit EPROM offered in the two range 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 pinout is compatible with the most common 4 Mbit Mask ROM.

■ 2.7 to 3.6V LOW VOLTAGE in READ OPERATION

■ READ ACCESS TIME:

– 80ns at VCC = 3.0 to 3.6V

– 100ns at VCC = 2.7 to 3.6V

■ BYTE-WIDE or WORD-WIDE CONFIGURABLE

■ 4 Mbit MASK ROM REPLACEMENT

■ LOW POWER CONSUMPTION

– Active Current 20mA at 8MHz

– Stand-by Current 15μA

■ PROGRAMMING VOLTAGE: 12.5V ± 0.25V

■ PROGRAMMING TIME: 50μs/word

■ ELECTRONIC SIGNATURE

– Manufacturer Code: 20h

– Device Code: B8h