24FC128T-I/SN

Memory IC Overview

The Microchip Technology 24FC128T-I/SN is a 16K x 8 (128 Kbit) Serial Electrically Erasable PROM (EEPROM). It operates with a single supply voltage ranging from 1.7V to 5.5V and features an I2C compatible two-wire serial interface supporting up to 1 MHz clock frequency at VCC ≥ 2.5V. The device utilizes low-power CMOS technology, offering a maximum write current of 3 mA and standby current of 1 µA. It includes a 64-byte page write buffer, hardware write-protect capability via the WP pin, and Schmitt trigger inputs for noise suppression. The component is housed in an 8-lead SOIC package and supports industrial temperature ranges.

Memory IC Feature Summary

• Supports high-speed I2C communication with 1 MHz compatibility at sufficient supply voltages
• Features a 64-byte page write buffer for efficient data transfer operations
• Includes hardware write protection controlled by the dedicated WP pin
• Provides robust noise immunity through Schmitt trigger inputs on SDA and SCL lines

Memory IC Applications

• Personal communications devices requiring non-volatile storage
• Data acquisition systems needing reliable parameter retention
• Embedded controllers utilizing I2C bus architectures

Memory IC Procurement Notes

Verify that the ordering suffix 'SN' corresponds specifically to the 8-lead Narrow SOIC package configuration. Confirm the 'I' designation indicates the Industrial temperature range (-40°C to +85°C). Ensure the procurement documentation explicitly references the 24FC128 series specifications rather than generic family datasheets to validate the 1 MHz clock speed capability.

Memory IC Selection Notes

Select this component when operation below 2.5V is required alongside high-speed 1 MHz I2C performance. The 24FC128 differs from the 24LC128 variant which is limited to 400 kHz. Verify that the application environment remains within the specified -40°C to +85°C industrial temperature range. Consider the 64-byte page write limit when designing software buffers to prevent data rollover across page boundaries.

Memory IC Part Context

This part belongs to the 24XX128 family, which also includes the 24AA128 and 24LC128 variants. While sharing identical memory architecture and interface protocols, the 24FC128 is distinguished by its ability to support 1 MHz clock frequencies at higher supply voltages. The 'T' suffix denotes tape and reel packaging, while 'SN' specifies the plastic small outline package type.

Memory IC Replacement Considerations

The 24LC128T-I/SN serves as a functional substitute if the application does not require 1 MHz clock speeds. The 24AA128T-I/SN is compatible but lacks specific automotive qualification. Verify package dimensions and pinout compatibility before substitution.