The HN27C4096ACC-12 is a 4,194,304-bit (4Mbit) UV Erasable Programmable Read-Only Memory (EPROM) organized as 524,288 words by 8 bits manufactured by Hitachi. It is designed for applications where non-volatile storage of program code or data is required, and where the contents of the memory may need to be updated or reprogrammed periodically.

Applications:

• Embedded Systems: Storing firmware and program code in embedded systems such as industrial controllers, automotive electronics, and consumer electronics.
• Microcontroller Programs: Storing boot code and application programs for microcontrollers.
• Data Storage: Storing configuration data, calibration data, or other non-volatile data in electronic devices.
• Development and Prototyping: Used during the development and prototyping phases for storing and testing different software versions.
• Legacy Systems: As a replacement EPROM for older systems.

Features:

• 4Mbit Capacity: 4,194,304-bit storage capacity.
• Organized as 524,288 x 8 bits: Organized to read a byte (8 bits) at a time.
• UV Erasable: Can be erased by exposure to ultraviolet light.
• Programmable: Can be programmed electrically using a suitable EPROM programmer.
• Fast Access Time: Access time of 120ns allows for quick retrieval of data.
• Single 5V Supply: Operates from a single 5V power supply.
• TTL Compatible Inputs/Outputs: Compatible with TTL logic levels.

Benefits:

• Non-Volatile Storage: Retains data even when power is removed.
• Reprogrammable: Allows for updating or changing the stored data as needed.
• Easy Development: Facilitates easy prototyping and development of embedded systems.
• Fast Access: Provides fast data access for quick program execution.
• Wide Temperature Range: Suitable for use in a wide range of operating temperatures.

Additional Details:

The HN27C4096ACC-12 is typically packaged in a ceramic DIP package with a transparent window for UV erasure. Programming requires a suitable EPROM programmer that supports the specific programming algorithm for this device. Erasing the EPROM requires exposure to UV light of a specific wavelength and intensity for a specified duration. The EPROM can be erased and reprogrammed multiple times. Proper handling procedures should be followed to prevent electrostatic discharge (ESD) damage. The HN27C4096ACC-12 is a reliable solution for non-volatile data storage in a variety of electronic applications where reprogramming capability is desired.