Summary 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.
   
Features
■ 2.7V to 3.6V Supply Voltage in Read Operation
■ Access Time:
    – 70 ns at VCC = 3.0V to 3.6V
    – 80 ns at VCC = 2.7V to 3.6V
■ Pin Compatible with M27C256B
■ Low Power Consumption:
    – 15 µA Max. Standby Current
    – 15 mA Max. Active Current at 5 MHz
■ Programming Time 100 µs/byte
■ High Reliability CMOS Technology
    – 2,000V ESD Protection
    – 200 mA Latchup Protection Immunity
■ Electronic Signature
    – Manufacturer Code: 20h
    – Device Code: 3dh
■ ECOPACK® packages available