The BR93C46 is a 1K-bit EEPROM (Electrically Erasable Programmable Read-Only Memory) from Rohm Semiconductor, organized as 64 words x 16 bits. It is a serial EEPROM accessed via a simple 3-wire interface (SI, SO, SK) making it easy to integrate into a variety of applications. The device is designed for low-voltage, low-power operation, making it suitable for battery-powered or energy-conscious systems.

Applications

• Consumer electronics (e.g., TVs, set-top boxes)
• Industrial control systems
• Automotive electronics
• Medical devices
• Smart cards
• Data storage for configuration parameters
• Calibration data storage

Features

• 1K-bit (128 x 8 or 64 x 16) Serial EEPROM
• 3-wire serial interface (SI, SO, SK)
• 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., SOP8, TSSOP8)

Benefits

• Non-volatile memory: Data is retained even when power is removed.
• Simple interface: Easy to integrate into microcontroller-based systems.
• Low power consumption: Suitable for battery-powered devices.
• High endurance: Can withstand a large number of erase/write cycles.
• Small package: Saves board space.
• Write protection: Prevents accidental data corruption.

Additional Details

The BR93C46 utilizes a self-timed write cycle, simplifying the write operation for the host microcontroller. A write protect feature is included to prevent accidental data corruption. The device is available in various package options, including SOP8 and TSSOP8, to accommodate different board space constraints. The operating voltage range varies depending on the specific version of the BR93C46, but it typically covers the range of 1.8V to 5.5V. The device is often used to store small amounts of configuration data or calibration parameters in embedded systems.