GENERAL DESCRIPTION
The MR27V402E is a 4 Mbit One Time Programmable Read-Only Memory that can be electrically switched between 262,144-word × 16-bit and 524,288-word × 8-bit by the state of the BYTE pin. The MR27V402E supports high speed asynchronous read operation using a single 3.3V power supply.

FEATURES
· 262,144-word × 16-bit/524,288-word × 8-bit electrically switchable configuration
· +3.3 V power supply
· Access time 80 nS MAX
· Operating current 30 mA MAX
· Standby current 50 µA MAX
· Input/Output TTL compatible
· Three-state output
· Packages:
           40-pin plastic DIP (DIP40-P-600-2.54) (MR27V402ERP)
           40-pin plastic SOP (SOP40-P-525-1.27-K) (MR27V402EMP)
           44-pin plastic TSOP (TSOP(2)44-P-400-0.80-K) (MR27V402ETP)
           42-pin plastic SOJ (SOJ42-P-400-1.27) (MR27V402EJA)