The CY27C256T55WC is a high-performance 256K CMOS EPROM (Erasable Programmable Read-Only Memory) manufactured by Cypress Semiconductor Corp. This memory device offers fast access times and low power consumption, making it suitable for a variety of embedded applications. Its non-volatile nature ensures data retention even when power is removed.

Applications:

• Firmware storage in embedded systems
• Program storage for microcontrollers and microprocessors
• Boot code storage in computer systems
• Lookup tables in digital signal processing (DSP) applications
• Storing configuration data in programmable logic devices (PLDs)

Features:

• Fast access time of 55 ns, enabling high-speed operation
• Low power CMOS technology for reduced energy consumption
• 256K memory capacity (32K x 8 bits)
• Programmable using standard EPROM programmers
• Non-volatile data storage with long-term data retention
• Available in a ceramic DIP package (windowed for UV erasure)

Benefits:

• Improved system performance due to fast access times
• Reduced power consumption, extending battery life in portable devices
• Reliable data storage with long-term retention
• Flexibility to reprogram the device using UV erasure
• Easy integration into existing systems with standard EPROM programmers

Additional Details:

The CY27C256T55WC operates on a single 5V power supply. It is available in a 28-pin ceramic DIP package with a quartz window, allowing the memory to be erased using ultraviolet (UV) light. Once erased, the EPROM can be reprogrammed with new data using a standard EPROM programmer. The fast access time of 55ns ensures that data can be read quickly, minimizing delays in system operation. The CMOS technology provides low power consumption, making it suitable for battery-powered applications. The 32K x 8 bit organization provides a convenient memory configuration for various applications. The device is often used in older embedded systems and industrial equipment where reliable non-volatile memory is required. It's JEDEC standard compatible for pinout and timing.