The X28C64EM-20T1 is a 64K (8K x 8) EEPROM (Electrically Erasable Programmable Read-Only Memory) manufactured by Intersil, now part of Renesas Electronics. EEPROMs are non-volatile memory devices that can be electrically erased and reprogrammed in-circuit. They are used for storing configuration data, calibration parameters, and other non-volatile information in electronic systems.

Applications

• Data Storage: Used for storing configuration parameters, calibration data, and serial numbers in embedded systems.
• Program Storage: Employed for storing firmware and boot code in microcontrollers and microprocessors.
• Data Logging: Integrated into data loggers for recording sensor data and other information.
• Industrial Control Systems: Used in industrial control equipment for storing program code and configuration settings.
• Automotive Electronics: Utilized in automotive systems for storing calibration data and diagnostic information.

Features

• High Density: 64K (8K x 8) memory capacity.
• Fast Access Time: 200 ns access time (indicated by the "20" representing 200ns, not 20ns).
• Low Power Consumption: Designed for low power operation, suitable for battery-powered applications.
• In-Circuit Programmability: Can be programmed and erased electrically without removing it from the circuit.
• Page Mode Write Operation: Simplifies the write process and reduces programming time.

Benefits

• Non-Volatile Storage: Retains data even when power is removed.
• In-System Programmability: Allows for easy updating of data and firmware in the field.
• Fast Access Time: Enables quick retrieval of stored data.
• Low Power Consumption: Extends battery life and reduces energy costs.
• High Reliability: Ensures data integrity and prevents data loss.

Additional Details

The X28C64EM-20T1 is typically available in a 28-pin DIP (Dual In-line Package) or SOIC (Small Outline Integrated Circuit) package. The memory is organized as 8,192 bytes. The device supports both byte-wide and page-mode write operations. It operates from a single 5V power supply. The address inputs (A0-A12) select one of the 8,192 memory locations. The data inputs/outputs (DQ0-DQ7) are used to write data into and read data from the selected memory location. The device also features a chip enable (CE), output enable (OE), and write enable (WE) control signals.

The device utilizes Intersil's proprietary technology, which provides high endurance and data retention. It also features a page write operation, which allows for writing up to 32 bytes of data in a single operation. The X28C64EM-20T1 is commonly used in applications where non-volatile data storage, in-system programmability, and low power consumption are required.