NM24C04EM8

Memory IC Overview

The NM24C04EM8 is a 4-Kbit (512 x 8) CMOS serial EEPROM manufactured by Fairchild Semiconductor, now part of onsemi. It features an I²C interface with a maximum clock frequency of 400 kHz and operates within a supply voltage range of 2.7V to 5.5V. The device supports standard and low-voltage operation modes, offering typical standby currents as low as 1µA in the LZ variant. It provides 1,000,000 write endurance cycles and data retention exceeding 40 years. The component is housed in an 8-pin SOIC package and is rated for extended industrial temperature ranges.

Memory IC Feature Summary

• Supports high-speed 400 kHz I²C communication alongside standard 100 kHz mode
• Enables efficient data storage through 16-byte page write capabilities
• Ensures long-term data integrity with over 40-year retention and million-cycle endurance
• Operates reliably across wide voltage and temperature conditions

Memory IC Applications

• Embedded systems requiring non-volatile configuration storage
• Industrial control units needing reliable parameter logging
• Consumer electronics utilizing low-power memory interfaces

Memory IC Procurement Notes

Verify that the specific ordering suffix matches the required voltage and temperature specifications. Confirm package type compatibility during sourcing. Check RoHS compliance status for environmental regulations. Ensure the manufacturer source is recognized for legacy Fairchild inventory. Validate pinout alignment with existing PCB layouts before finalizing orders.

Memory IC Selection Notes

Select this component when a 4-Kbit capacity is sufficient for application needs. Choose based on the required operating temperature range and voltage constraints. Consider the 400 kHz speed if faster bus communication is necessary. Evaluate power consumption requirements against available standby current options. Ensure system design accommodates the open-drain I²C interface requirements.

Memory IC Part Context

This device belongs to the NM24C04/05 family of serial EEPROMs designed for I²C bus applications. It shares architectural similarities with other densities in the series, such as the NM24C02 and NM24C08. The product line emphasizes low pin count and simplified board layout. It serves as a non-volatile memory solution for microprocessor-based systems requiring frequent data updates.

Memory IC Replacement Considerations

Direct replacements include the NM24C04M8 from Fairchild or compatible parts from other manufacturers supporting the same I²C protocol and pinout. Verify electrical characteristics match the original design requirements. Ensure physical dimensions align with the existing footprint.