AT27C256R-12PC [Microchip]

The AT27C256R is a low-power, high-performance 262,144-bit OTP EPROM organized 32K by 8 bits. It requires only one 5V power supply in normal read mode operation. Any byte can be accessed in less than 45 ns. Features include low-power CMOS operation (100 µA max standby, 20 mA max active at 5 MHz), JEDEC standard packages (28-Lead 600-mil PDIP, 32-Lead PLCC, 28-Lead TSOP and SOIC), 5V ±10% supply, high reliability CMOS technology with 2000V ESD protection and 200 mA latchup immunity, Rapid™ programming algorithm (100 µs/byte typical), CMOS and TTL compatible inputs and outputs, integrated product identification code, and commercial, industrial, and automotive temperature ranges.