Overview
The LC374500ST is a 524288-word  × 8-bit (4M) mask programmable ROM that is pin compatible with flash memory. Since this product supports the wide operating voltage range of 2.6 to 5.5 V and achieves access times of 100 ns (tCA) when VCC is between 4.5 and 5.5 V and 200 ns when VCC is between 2.6 and 5.5 V, it can be used both in high-speed 5-V systems and battery-operated 3-V systems. Since this product is pin compatible with flash memory it can replace flash memory used during prototyping and production.

FEATUREs
• 524288-word × 8-bit organization
• Wide supply voltage range: 2.6 to 5.5 V
• Access times (tAA): 120 ns (maximum) at VCC = 4.5 to 5.5 V
                         (tCA): 100 ns (maximum) at VCC = 4.5 to 5.5 V
                                    200 ns (maximum) at VCC = 2.6 to 5.5 V
• Operating supply current: 50 mA (maximum)
• Standby mode supply current: 30 µA (maximum)
• Fully static operation (internal synchronization)
• Three-state outputs
• Pin compatible with flash memory
• Package—32-pin TSOP ( 8 × 20 mm) plastic package: LC374500ST