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