描述 Description

DESCRIPTION
The MR27V402D is a 4Mbit electrically Programmable Read-Only Memory whose configuration can be electrically switched between 262,144 word x 16bit and 524,288 word x 8bit. The MR27V402D operates on a single +3V-3.3V power supply and is TTL compatible. Since the MR27V402D operates asynchronously , external clocks are not required , making this device easy-to-use. The MR27V402D is suitable as large-capacity fixed memory for microcomputers and data terminals. It is manufactured using a CMOS double silicon gate technology and is offered in 40-pin DIP, 40-pin SOP or 44-pin TSOP packages.FEATURES
? 262,144 word x 16bit / 524,288 word x 8bit electrically switchable configuration
? Single +3V-3.3V power supply
? Access time 100ns access time (Vcc=+3V)
????????????????? ? 80ns access time (Vcc=+3.3V)
? Input / Output TTL compatible
? Three-state output
? Packages
??????????? 40-pin plastic DIP (DIP40-P-600-2.54) (Product name : MR27V402DRP)
??????????? 40-pin plastic SOP (SOP40-P-525-1.27-K) (Product name : MR27V402DMP)
??????????? 44-pin plastic TSOP (TSOP II 44-P-400-0.80-K) (Product name : MR27V402DTP)

特性 Features

? 262,144 word x 16bit / 524,288 word x 8bit electrically switchable configuration
? Single +3V-3.3V power supply
? Access time 100ns access time (Vcc=+3V)
????????????????? ? 80ns access time (Vcc=+3.3V)
? Input / Output TTL compatible
? Three-state output
? Packages
??????????? 40-pin plastic DIP (DIP40-P-600-2.54) (Product name : MR27V402DRP)
??????????? 40-pin plastic SOP (SOP40-P-525-1.27-K) (Product name : MR27V402DMP)
??????????? 44-pin plastic TSOP (TSOP II 44-P-400-0.80-K) (Product name : MR27V402DTP)?