The M27C64A is a 64Kbit EPROM offered in the two ranges UV (ultra violet erase) and OTP (one time programmable). It is ideally suited for microprocessor systems requiring large programs and is organized as 8,192 by 8 bits. The FDIP28W (window ceramic frit-seal package) has transparent lid which allows the user to expose the chip to ultraviolet light to erase the bit pattern. A new pattern can then be written to the device by following the programming procedure.

FEATURE summary
■ 5V ± 10% supply voltage in Read operation
■ Access time: 100ns
■ Low power “CMOS” consumption:
  – Active Current 30mA
  – Standby Current 100µA
■ Programming voltage: 12.5V ± 0.25V
■ High speed programming (less than 1 minute)
■ Electronic signature
– Manufacturer Code: 9Bh
– Device Code: 08h
■ ECOPACK® packages available