Microchip Technology, Inc. Memory AT27C512R-45RI

The AT27C512R-45RI is a low-power, high-performance one-time programmable (OTP) EPROM with a storage capacity of 512K bits, organized as 64K x 8 bits. It operates with a single 5V power supply and features a fast read access time of 45 ns, making it suitable for high-performance microprocessor systems without the need for speed-reducing WAIT states. The device consumes a maximum of 20 mA in active mode at 5 MHz and only 100 µA in standby mode. This memory chip is available in multiple industry-standard packages, including 28-Lead PDIP, 32-Lead PLCC, and 28-Lead SOIC, providing flexibility for various design requirements. The AT27C512R-45RI utilizes a Rapid Programming Algorithm, allowing for programming speeds of approximately 100 µs per byte, which enhances production efficiency. It also includes features such as 2,000V ESD protection and 200 mA latchup immunity, ensuring high reliability in various applications. The device supports both CMOS and TTL compatible inputs and outputs, and it includes an integrated product identification code for easy recognition by programming equipment. It is suitable for commercial, industrial, and automotive temperature ranges, making it versatile for different environments.