24LC128-I/PG

Memory IC Overview

The Microchip Technology 24LC128-I/PG is a 16K x 8 (128 Kbit) Serial Electrically Erasable PROM (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 offers over one million erase/write cycles, data retention exceeding 200 years, and ESD protection greater than 4,000V. The component is housed in an 8-lead PDIP package and functions within an industrial temperature range of -40°C to +85°C.

Memory IC Feature Summary

• Supports bidirectional two-wire serial communication protocol compatible with standard I2C bus specifications.
• Includes a 64-byte page write buffer to facilitate efficient sequential data storage operations.
• Provides hardware-based write protection capability through the dedicated WP pin input.
• Features Schmitt trigger inputs designed to suppress noise spikes on the SDA and SCL lines.

Memory IC Applications

• Personal communications devices requiring non-volatile configuration storage
• Data acquisition systems needing reliable parameter retention
• Industrial control applications utilizing low-power memory solutions

Memory IC Procurement Notes

Verify that the specific ordering suffix corresponds to the required package type and temperature grade. Confirm compliance with current RoHS directives and REACH regulations before integration. Ensure the design accounts for the specified voltage range and interface timing requirements to maintain operational integrity.

Memory IC Selection Notes

Select this component when a 128 Kbit capacity is required with I2C connectivity. The Industrial temperature grade ensures functionality across wide environmental variations. Consider the 64-byte page write limit when designing software drivers to prevent data overflow during bulk writes.

Memory IC Part Context

This part belongs to the 24XX128 family, which also includes the 24AA128 and 24FC128 variants. These devices share identical pinouts and functional architectures but differ in operating voltage ranges and maximum clock frequencies. The 24LC128 specifically targets applications requiring a minimum 2.5V supply.

Memory IC Replacement Considerations

Direct substitutes include the 24AA128 and 24FC128, provided voltage and speed constraints are met. Verify package compatibility and temperature ratings when cross-referencing with other manufacturers' EEPROM offerings.

Memory IC FAQ

How does the WP pin affect write operations?

When the WP pin is tied to VCC, write operations are inhibited while read operations remain unaffected. Tying it to VSS enables write access to the entire array.

What happens if a page write crosses a physical boundary?

If a page write command attempts to cross a physical page boundary, the data wraps around to the beginning of the current page instead of proceeding to the next page.