DESCRIPTION
The M27V400 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-out is compatible with the most common 4 Mbit Mask ROM.

■ M27V400 is replaced by the M27W400
■ 3V to 3.6V LOW VOLTAGE in READ OPERATION
■ ACCESS TIME: 100ns
■ BYTE-WIDE or WORD-WIDE CONFIGURABLE
■ 4 Mbit MASK ROM REPLACEMENT
■ LOW POWER CONSUMPTION
    – Active Current 30mA at 8MHz
    – Stand-by Current 20µA
■ PROGRAMMING VOLTAGE: 12.5V ± 0.25V
■ PROGRAMMING TIME: 50µs/word
■ ELECTRONIC SIGNATURE
    – Manufacturer Code: 20h
    – Device Code: B8h