Microchip Technology

AT28HC64B-90TU-T  

Memory ICs Products

AT28HC64B-90TU-T Description

The AT28HC64B-90TU-T is a 64Kbit EEPROM memory IC designed for parallel interfacing applications. Manufactured by Microchip Technology, this device is housed in a 28-pin TSOP package and is suitable for surface mount applications. The memory is organized as 8K x 8, providing a robust and reliable storage solution for various electronic systems. This EEPROM operates within a supply voltage range of 4.5V to 5.5V, ensuring compatibility with a wide range of power supplies. The access time of 90 nanoseconds and a write cycle time of 10 milliseconds for word or page operations make it highly efficient for data storage and retrieval tasks. Despite being marked as obsolete, the AT28HC64B-90TU-T remains a viable option for legacy systems and specific applications where its unique features are advantageous.

AT28HC64B-90TU-T Features

• Memory Size: 64Kbit, organized as 8K x 8, offering a substantial storage capacity for data.
• Access Time: 90 nanoseconds, ensuring rapid data access and retrieval.
• Write Cycle Time: 10 milliseconds for word or page operations, balancing speed and reliability.
• Voltage Range: 4.5V to 5.5V, providing flexibility in power supply requirements.
• Memory Interface: Parallel, facilitating straightforward integration with existing parallel bus architectures.
• Package Type: 28-pin TSOP, suitable for surface mount technology (SMT) and compact designs.
• Moisture Sensitivity Level: MSL 3 (168 hours), ensuring reliability in various environmental conditions.
• RoHS Compliance: ROHS3 Compliant, meeting environmental standards for restricted hazardous substances.
• Memory Format: EEPROM, allowing for non-volatile data storage that retains information even when power is removed.

AT28HC64B-90TU-T Applications

The AT28HC64B-90TU-T is ideal for applications requiring reliable and efficient non-volatile memory storage. Its parallel interface and EEPROM technology make it suitable for a variety of industries and use cases, including:

• Embedded Systems: Providing persistent storage for configuration data, firmware, and other critical information in embedded devices.
• Industrial Control: Storing calibration data, operational parameters, and logs in industrial control systems.
• Telecommunications: Maintaining configuration settings and operational data in communication equipment.
• Consumer Electronics: Storing user preferences, settings, and firmware in devices such as routers, modems, and other consumer electronics.
• Automotive: Storing critical data in automotive systems, such as engine control units and infotainment systems.

Conclusion of AT28HC64B-90TU-T

The AT28HC64B-90TU-T is a versatile EEPROM memory IC that offers a balance of performance, reliability, and compatibility. Despite its obsolete status, it remains a valuable component for applications where its specific features are required. Its 64Kbit storage capacity, 90 nanosecond access time, and 10 millisecond write cycle time make it suitable for a wide range of electronic systems. The parallel interface and surface mount package further enhance its integration capabilities. For systems that require non-volatile memory storage with fast data access and reliable performance, the AT28HC64B-90TU-T is an excellent choice.

AT28HC64B-90TU-T Documents

Download datasheets and manufacturer documentation for AT28HC64B-90TU-T

Datasheets :

AT28HC64B      

PCN Packaging :

MBB/Label Chgs 16/Nov/2018      

Design Resources :

AT28HC64B Development Tool Selector      

PCN Obsolescence/ EOL :

AT28xx64B/AT28xx256x 25/Feb/2021      

HTML Datasheet :

AT28HC64B      

Environmental Information :

Microchip CA Prop65       Microchip RoHS       Microchip REACH