24LC04B-I/P

Memory IC Overview

The Microchip Technology 24LC04B-I/P is a 4-Kbit Electrically Erasable PROM (EEPROM) organized as two blocks of 256 x 8-bit memory. It operates with a single supply voltage ranging from 2.5V to 5.5V and supports a maximum clock frequency of 400 kHz via a Two-Wire Serial Interface compatible with I²C. The device features an access time of 900 ns, a page write time of 5 ms maximum, and a 16-byte page write buffer. It functions within an industrial temperature range of -40°C to +85°C and is housed in an 8-Lead PDIP package.

Memory IC Feature Summary

• Supports bidirectional data transmission using a standard Two-Wire Serial Interface compatible with I²C protocols.
• Includes hardware write protection functionality controlled by the WP pin to inhibit write operations when tied to VCC.
• Features Schmitt trigger inputs and output slope control to suppress noise spikes and eliminate ground bounce.
• Provides self-timed erase/write cycles with automatic acknowledgment polling capabilities.

Memory IC Applications

• Embedded systems requiring non-volatile storage for configuration parameters.
• FPGA designs utilizing IIC protocol for external memory expansion.
• Sensor applications needing calibration data or zero-point offset compensation storage.
• Industrial controllers storing firmware version records or log buffers.

Memory IC Procurement Notes

Verify that the specific ordering suffix matches the required package type, as the base part number covers multiple form factors. Confirm the temperature grade corresponds to the application environment, ensuring the Industrial grade meets the thermal requirements. Check RoHS compliance status if restricted substances are mandated. Ensure the supply voltage range aligns with the system's power rails before integration.

Memory IC Selection Notes

Select this component when a 4-Kbit capacity is sufficient for the target application. Choose the PDIP package only if through-hole mounting is necessary for mechanical stability or prototyping. Verify that the 400 kHz clock speed meets the system's timing constraints. Consider the 16-byte page buffer size when designing write algorithms to optimize bus throughput and prevent data corruption across page boundaries.

Memory IC Part Context

This device belongs to the 24XX04 family, which includes the 24AA04 and 24FC04 variants. While sharing similar architecture, the 24LC04B is distinguished by its minimum operating voltage of 2.5V, whereas other family members support lower voltages or higher clock speeds. The 'I' designation indicates the industrial temperature rating, and '/P' specifies the 8-lead plastic dual in-line package.

Memory IC Replacement Considerations

The 24AA04 and 24FC04 are electrically compatible alternatives within the same datasheet. The 24AA04 supports operation down to 1.7V, while the 24FC04 supports up to 1 MHz clock frequency. Ensure voltage levels and timing requirements match the specific design constraints when substituting these parts.