The BL24C128A-PARC is a 128K-bit (16K x 8) CMOS EEPROM (Electrically Erasable Programmable Read-Only Memory) device manufactured by SHANGHAI BELLING CO., LTD. It is organized as 16,384 words of 8 bits each. This device features a 2-wire serial interface, making it suitable for applications requiring non-volatile memory storage with a minimal number of interface pins.

Applications

• Data storage in consumer electronics
• Parameter storage in industrial control systems
• Serial presence detect (SPD) in memory modules
• Configuration data storage in network devices
• Storing calibration data in sensors
• Storing user preferences in appliances

Features

• 128K-bit (16K x 8) EEPROM
• 2-wire serial interface (I2C compatible)
• Low voltage operation (typically 1.8V to 5.5V)
• Write protect feature
• Self-timed write cycle
• High reliability with data retention of typically 100 years
• Low power consumption
• Available in various package options (e.g., SOP, TSSOP)

Benefits

• Non-volatile memory storage ensures data retention even when power is removed.
• The 2-wire interface simplifies system design and reduces pin count.
• Low voltage operation makes it suitable for battery-powered applications.
• Write protect feature prevents accidental data corruption.
• Self-timed write cycle simplifies programming and reduces the need for external timing circuitry.
• High reliability ensures long-term data integrity.
• Small package options allow for integration into compact devices.

Additional Details

The BL24C128A-PARC uses the standard I2C protocol for communication. The device address is configurable through hardware pins, allowing multiple devices to share the same I2C bus. The device supports page write operations, allowing up to a certain number of bytes (typically 8 or 16) to be written in a single write cycle. The write cycle time is typically a few milliseconds. The device also features a software write protection mechanism to prevent accidental overwriting of data. The EEPROM is fabricated using CMOS technology, resulting in low power consumption during both read and write operations. It comes in various surface mount packages.

This EEPROM is a popular choice for embedded systems needing small amounts of non-volatile storage, easy interfacing, and reliable operation.