24128 I2C-Compatible Electrically Erasable PROM (EEPROM)

Overview

The 24128 is a 128-Kbit (16,384 x 8) I2C-compatible Electrically Erasable Programmable Read-Only Memory (EEPROM) designed for non-volatile data storage in a wide range of applications. This device provides reliable data retention and endurance, making it suitable for systems requiring frequent updates to stored data. The 24128 operates across a broad voltage range and supports the I2C serial interface, ensuring compatibility with a variety of microcontrollers and digital systems.

With its high-speed read and write operations, the 24128 is ideal for applications where fast access to configuration data, calibration parameters, or user settings is essential. The device also features hardware write protection and a built-in software write-protect function to prevent accidental data corruption.

Features

• 128-Kbit Memory Organization: 16,384 x 8-bit structure for flexible data storage.
• I2C-Compatible Interface: Supports standard (100 kHz) and fast (400 kHz) modes.
• Wide Voltage Range: Operates from 1.7V to 5.5V, making it suitable for low-power and battery-operated systems.
• High Endurance: Supports up to 1,000,000 write cycles per byte.
• Long Data Retention: Guaranteed data retention for 100 years.
• Hardware and Software Write Protection: Configurable write protection for memory blocks.
• Page Write Mode: Allows up to 64 bytes to be written in a single operation, improving efficiency.
• Low Power Consumption: Active current of 1 mA (typical) and standby current of 1 µA (typical).
• Industrial Temperature Range: Operates from -40°C to +85°C for robust performance in harsh environments.

Applications

The 24128 is widely used in various electronic systems requiring non-volatile memory storage. Key applications include:

• Consumer Electronics: Smartphones, tablets, digital cameras, and smart home devices for storing user preferences and calibration data.
• Automotive Systems: Infotainment systems, instrument clusters, and engine control units for parameter storage.
• Industrial Automation: Programmable logic controllers (PLCs), sensors, and data loggers for configuration and event logging.
• Medical Devices: Patient monitoring equipment and portable medical instruments for storing calibration and usage data.
• Networking Equipment: Routers, switches, and modems for firmware and configuration storage.
• IoT Devices: Wearables and edge computing nodes for secure data retention.

Electrical Characteristics

Absolute Maximum Ratings

• Supply Voltage (V_CC): -0.6V to +6.5V
• Input Voltage (V_IN): -0.6V to V_CC + 0.6V
• Storage Temperature: -65°C to +150°C
• Operating Temperature: -40°C to +85°C

DC Characteristics

• Supply Current (Active): 1 mA (typical) at 100 kHz, 3 mA (typical) at 400 kHz
• Supply Current (Standby): 1 µA (typical)
• Input Low Voltage (V_IL): -0.5V to 0.3V_CC
• Input High Voltage (V_IH): 0.7V_CC to V_CC + 0.5V

AC Characteristics

• Clock Frequency (f_SCL): 100 kHz (Standard Mode), 400 kHz (Fast Mode)
• Write Cycle Time: 5 ms (maximum)
• Data Hold Time: 100 ns (minimum)
• Start Condition Setup Time: 600 ns (minimum)

Package Information

The 24128 is available in multiple industry-standard packages, ensuring compatibility with various PCB designs and assembly processes.

Available Packages

• 8-lead SOIC (208 mil): Compact surface-mount package for space-constrained applications.
• 8-lead TSSOP: Thin shrink small outline package for high-density PCB layouts.
• 8-lead PDIP: Plastic dual in-line package for through-hole mounting in prototyping and legacy systems.

Pin Configuration

• Pin 1 (A0): Address Input (LSB)
• Pin 2 (A1): Address Input
• Pin 3 (A2): Address Input (MSB)
• Pin 4 (V_SS): Ground
• Pin 5 (SDA): Serial Data Line (I2C)
• Pin 6 (SCL): Serial Clock Line (I2C)
• Pin 7 (WP): Write Protect (active low)
• Pin 8 (V_CC): Power Supply

Conclusion

The 24128 is a versatile and reliable EEPROM solution for applications requiring non-volatile memory with I2C interface compatibility. Its robust electrical characteristics, wide operating voltage range, and flexible packaging options make it an excellent choice for designers across industries. Whether used in consumer electronics, automotive systems, or industrial applications, the 24128 delivers high performance and long-term data integrity.