24128 B

Technical Summary: 24128 B I2C-Compatible EEPROM

Overview

The 24128 B is a high-performance, I2C-compatible Electrically Erasable Programmable Read-Only Memory (EEPROM) device designed for non-volatile data storage in a wide range of applications. With a storage capacity of 128 Kbits (16 Kbytes), this component provides reliable and flexible memory solutions for embedded systems, consumer electronics, and industrial applications. The 24128 B supports the I2C serial interface, enabling easy integration with microcontrollers and other digital systems while maintaining low power consumption and high endurance.

Features

• Memory Capacity: 128 Kbits (16 Kbytes) organized as 16,384 words × 8 bits
• Interface: I2C-compatible (supports standard, fast, and fast-mode plus up to 1 MHz)
• Operating Voltage: 1.7V to 5.5V, making it suitable for low-power and battery-operated devices
• Write Endurance: 1,000,000 write cycles per byte, ensuring long-term reliability
• Data Retention: 100 years at 25°C, guaranteeing data integrity over extended periods
• Page Write Mode: Supports 64-byte page writes for efficient data storage
• Hardware Write Protection: WP pin enables protection against accidental writes
• Temperature Range: Industrial-grade operation from -40°C to +85°C
• Low Power Consumption: Active current of 1 mA (typical) and standby current of 1 µA (typical)

Applications

The 24128 B is widely used in applications requiring non-volatile memory with a simple serial interface. Key application areas include:

• Embedded Systems: Configuration storage, firmware updates, and parameter retention
• Consumer Electronics: Smartphones, wearables, and IoT devices for storing user settings
• Automotive Systems: Event logging and calibration data storage
• Industrial Automation: Sensor calibration data and system configuration
• Medical Devices: Patient data logging and device settings
• Networking Equipment: MAC address storage and configuration parameters

Electrical Characteristics

The 24128 B operates under a wide voltage range and exhibits robust performance across temperature variations. Below are the key electrical specifications:

Absolute Maximum Ratings

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

DC Characteristics

• Supply Current (Read, V_CC = 5V): 1 mA (typical)
• Standby Current (V_CC = 5V): 1 µA (typical)
• Input Low Voltage (V_IL): -0.5V to 0.3 × V_CC
• Input High Voltage (V_IH): 0.7 × V_CC to V_CC + 0.5V

AC Characteristics

• Clock Frequency (f_SCL): Up to 1 MHz (Fast-mode Plus)
• Write Cycle Time: 5 ms (maximum)
• Bus Timing (t_HD;STA): 600 ns (minimum for start condition)
• Bus Timing (t_SU;STO): 600 ns (minimum for stop condition)

Package Information

The 24128 B is available in multiple industry-standard packages, ensuring compatibility with various PCB layouts and assembly processes. The following package options are offered:

8-Lead PDIP (Plastic Dual In-line Package)

• Dimensions: 9.81 mm × 6.35 mm
• Pitch: 2.54 mm
• Lead Count: 8
• Mounting: Through-hole

8-Lead SOIC (Small Outline Integrated Circuit)

• Dimensions: 5.00 mm × 4.00 mm
• Pitch: 1.27 mm
• Lead Count: 8
• Mounting: Surface-mount

8-Lead TSSOP (Thin Shrink Small Outline Package)

• Dimensions: 3.00 mm × 4.40 mm
• Pitch: 0.65 mm
• Lead Count: 8
• Mounting: Surface-mount

Conclusion

The 24128 B is a versatile and reliable EEPROM solution, offering high endurance, low power consumption, and broad compatibility with I2C interfaces. Its robust electrical characteristics and multiple package options make it suitable for a wide range of applications, from consumer electronics to industrial systems. With its long data retention and high write endurance, the 24128 B is an excellent choice for designers seeking dependable non-volatile memory.