Overview

The LC378000RP is an 8-Mbit mask ROM that can be switched between byte mode, which provides an 8-bit × 1,048,576-word structure, and word mode, which provides a 16-bit × 524,288-word structure. Since this device operates over the wide supply voltage range of 2.6 to 5.5 V and achieves access times (tAA) of 100 ns (at VCC = 4.5 to 5.5 V) and 200 ns (at VCC = 2.6 to 5.5 V), it can be used in a wide range of systems, from 5-V systems requiring high-speed access to 3-V battery operated systems.

Features

• Supply voltage range: 2.6 to 5.5 V

• Access time (tAA): 100 ns (VCC = 4.5 to 5.5 V)

(tCA): 110 ns (VCC = 4.5 to 5.5 V)

200 ns (VCC = 2.6 to 5.5 V)

• Switchable between 8-bit and 16-bit data path widths

Byte mode: 1,048,576 words × 8 bits

Word mode: 524,288 words × 16 bits

• Operating current drain: 90 mA (maximum)

• Standby current: 30 µA (maximum)

• Fully static operation (internal synchronization)

• Three-state outputs

• Package: 42-pin DIP (600 mil) plastic package