STMicroelectronics 27C256B-12F1 EPROM

The 27C256B-12F1 is a high-speed 256 Kilobit UV erasable and programmable read-only memory (EPROM) device from STMicroelectronics, a leading global semiconductor company. This particular model is designed to offer a combination of fast access time and low power consumption, making it an ideal choice for a wide range of applications that require reliable and efficient non-volatile memory storage.

With its 32K x 8-bit organization, the 27C256B-12F1 provides a substantial amount of storage for firmware, boot code, and program data that need to be preserved when power is removed. The access time of 120 ns (nanoseconds) allows for quick data retrieval, which is essential for high-performance microprocessor systems.

The device operates within a single 5V power supply, ensuring compatibility with many standard digital systems and contributing to its ease of integration into a variety of circuit designs. It also features a two-line control function that helps to simplify system design by providing the option to place the entire device in standby mode, further reducing power consumption when the memory is not in active use.

The 27C256B-12F1 is encased in a 28-pin, 600 mil width, windowed ceramic frit-seal Dual-in-line Package (DIP), which allows for exposure to ultraviolet light to erase the stored data. This feature enables the device to be reused, making it a cost-effective solution for prototyping and development phases where code frequently needs to be updated and reprogrammed.

Programming the 27C256B-12F1 is achieved through a standard EPROM programmer, and the device supports fast programming algorithms, which can significantly reduce programming time during the development process. Additionally, the EPROM is designed with input and output levels that are TTL compatible, ensuring that it can be easily interfaced with a wide range of digital circuits.

Overall, the STMicroelectronics 27C256B-12F1 EPROM is a robust and reliable memory solution that balances performance, power efficiency, and flexibility, making it an excellent choice for applications in embedded systems, telecommunications, computing, and beyond.