The CY27C64-90WM is a high-performance CMOS Erasable Programmable Read-Only Memory (EPROM) device from Cypress Semiconductor. It offers a non-volatile storage solution with fast access times, making it suitable for various embedded systems and applications.

Applications

• Embedded systems firmware storage
• Microcontroller program storage
• Look-up tables
• Data logging
• Code storage for programmable logic devices (PLDs)

Features

• 64 Kbit (8K x 8) organization
• Fast access time: 90 ns
• CMOS for low power consumption
• Single 5V power supply
• Programmable using standard EPROM programmers
• Available in a windowed package for UV erasure
• TTL compatible inputs and outputs

Benefits

• Reliable non-volatile storage
• Fast read access for high-performance applications
• Low power consumption for battery-powered devices
• Easy programming and erasure
• Wide operating temperature range

Additional Details

The CY27C64-90WM is organized as 8192 words of 8 bits each. The 90 ns access time ensures rapid data retrieval, crucial for time-sensitive applications. The CMOS technology minimizes power consumption, extending battery life in portable devices. This EPROM is programmed using industry-standard EPROM programmers. Data is erased by exposing the chip to ultraviolet (UV) light through the window on the package. The TTL compatible inputs and outputs simplify interfacing with other logic devices. The device is commonly available in a DIP package. It is important to follow proper programming and erasure procedures to ensure data integrity. Always consult the datasheet for detailed electrical characteristics, timing diagrams, and programming algorithms. When erasing the EPROM, ensure the UV light source is appropriate and the exposure time is sufficient to completely erase the data. Proper handling and storage are essential to prevent damage to the device.