DESCRIPTION
The M27W256 is a low voltage 256 Kbit EPROM offered in the two ranges UV (ultra violet erase) and OTP (one time programmable). It is ideally suited for microprocessor systems and is organized as 32,768 by 8 bits.
   
■ 2.7V to 3.6V SUPPLY VOLTAGE in READ
    OPERATION
■ ACCESS TIME:
    – 70ns at VCC = 3.0V to 3.6V
    – 80ns at VCC = 2.7V to 3.6V
■ PIN COMPATIBLE with M27C256B
■ LOW POWER CONSUMPTION:
    – 15µA max Standby Current
    – 15mA max Active Current at 5MHz
■ PROGRAMMING TIME 100µs/byte
■ HIGH RELIABILITY CMOS TECHNOLOGY
    – 2,000V ESD Protection
    – 200mA Latchup Protection Immunity
■ ELECTRONIC SIGNATURE
    – Manufacturer Code: 20h
    – Device Code: 3Dh