The CAT93C86VI-26490T is an 16K-bit serial EEPROM (Electrically Erasable Programmable Read-Only Memory) manufactured by ON Semiconductor (formerly Catalyst Semiconductor). It is organized as 1024 words x 16 bits (or 2048 words x 8 bits) and utilizes a Microwire interface for communication. This device offers low-power operation and is designed for applications requiring non-volatile storage of small amounts of data, such as configuration parameters or calibration constants.

Applications

• Consumer electronics (e.g., TVs, set-top boxes, DVD players)
• Industrial control systems
• Automotive electronics
• Medical devices
• Instrumentation
• Data logging
• Storing configuration settings

Features

• 16K-bit (2048 x 8 or 1024 x 16) Serial EEPROM
• Microwire serial interface
• Low-voltage operation (1.8V to 5.5V depending on version)
• Self-timed write cycle
• Write protect feature
• High reliability: 1 million erase/write cycles
• Data retention: 100 years
• Small package options (e.g., SOIC-8, TSSOP-8)

Benefits

• Non-volatile memory: Retains data when power is off.
• Microwire interface: Simple to interface with microcontrollers.
• Low power consumption: Suitable for battery-powered applications.
• High endurance: Supports a large number of write cycles.
• Small package: Saves valuable board space.
• Write protection: Prevents accidental data changes.

Additional Details

The CAT93C86VI-26490T uses a self-timed write cycle, simplifying the programming process. A write protect input is provided to prevent accidental overwriting of the memory contents. The Microwire interface consists of three signals: Chip Select (CS), Serial Clock (SK), and Serial Data (SI/SO). The operating voltage range varies depending on the specific version but typically covers 1.8V to 5.5V. It is typically used in applications that require a small amount of non-volatile memory for storing configuration parameters, calibration data, or user preferences.