24LC128T-I/SMG

Memory IC Overview

The Microchip Technology 24LC128T-I/SMG is a 128 Kbit (16K x 8) serial electrically erasable programmable read-only memory (EEPROM). It operates on a single supply voltage ranging from 2.5V to 5.5V and features an I2C compatible two-wire serial interface with a maximum clock frequency of 400 kHz. The device supports page write operations with a 64-byte buffer and includes hardware write protection via the WP pin. It is designed for industrial temperature applications, functioning reliably between -40°C and +85°C.

Memory IC Feature Summary

• Supports cascading up to eight devices on the same bus using configurable chip select inputs.
• Includes Schmitt trigger inputs for enhanced noise suppression and output slope control to eliminate ground bounce.
• Features self-timed erase/write cycles with automatic address pointer incrementation.

Memory IC Applications

• Personal communications systems requiring low-power data storage
• Data acquisition modules needing non-volatile configuration retention
• Industrial control units utilizing I2C communication protocols

Memory IC Procurement Notes

Verify the specific suffix 'I/SMG' against official Microchip documentation to confirm package type and temperature grade. Confirm RoHS compliance status and check for any recent Product Change Notifications (PCN) affecting assembly or material composition before finalizing procurement orders.

Memory IC Selection Notes

Select this component when a 128 Kbit capacity is required within a standard SOIC-8 footprint. Ensure the system power supply remains above 2.5V to maintain the specified 400 kHz clock speed. Verify that the application environment stays within the -40°C to +85°C industrial temperature range for optimal performance.

Memory IC Part Context

This part belongs to the 24XX128 family, which also includes the 24AA128 and 24FC128 variants. While sharing similar interfaces and capacities, the 24LC128 is distinguished by its minimum operating voltage of 2.5V, whereas other family members support lower voltages or higher clock speeds.

Memory IC Replacement Considerations

Direct replacements include the 24LC128-I/SN, 24LC128-I/ST, and 24LC128-I/MF. These parts share identical electrical characteristics and pinouts but differ in physical package dimensions. Verify mechanical fitment before substitution.