NM24C08LN

Memory IC Overview

The NM24C08LN is an 8192-bit CMOS serial EEPROM utilizing a Standard IIC 2-wire bus interface. It operates within an extended voltage range of 2.7V to 5.5V and supports clock frequencies up to 400 kHz. The device features a 16-byte page write mode, Schmitt trigger inputs for noise suppression, and hardware write protection capabilities specific to the NM24C09 variant. It offers high endurance with one million data change cycles and retains data for over 40 years. Available in 8-pin DIP, SO, and TSSOP packages, it functions across commercial, extended, and automotive temperature ranges.

Memory IC Feature Summary

• Supports Standard IIC protocol with bi-directional data transfer via SCL and SDA lines.
• Features a 16-byte page write mode to minimize total write time per byte.
• Includes Schmitt trigger inputs and noise suppression filters for signal integrity.
• Provides hardware write protection for the upper memory half on NM24C09 models.

Memory IC Applications

• Small-area networks requiring low pin count memory solutions.
• Automotive electronics operating in harsh thermal environments.
• Consumer audio equipment such as stereos and televisions.
• Embedded systems needing non-volatile storage for configuration data.

Memory IC Procurement Notes

Verify the specific suffix codes against the ordering information table to confirm package type (DIP, SO, or TSSOP), temperature range (Commercial, Extended, or Automotive), and voltage characteristics. Ensure the selected variant matches the required standby current specifications, particularly distinguishing between standard L and low-power LZ options. Confirm that the device density corresponds to the 8K bit requirement rather than the 9K variant which includes write protection features.

Memory IC Selection Notes

Select the NM24C08LN when a standard 8K-bit capacity is sufficient for application needs without requiring the additional write protection hardware found in the NM24C09 series. Choose the LZ suffix if ultra-low standby current below 1µA is critical for power-constrained designs. Ensure the system design accommodates the open-drain nature of the IIC bus by including appropriate pull-up resistors on the SDA and SCL lines. Verify that the operating voltage remains within the 2.7V to 5.5V range to maintain reliable operation.

Memory IC Part Context

This component belongs to the NM24C08/09 family of 8K-bit serial EEPROMs manufactured originally by Fairchild Semiconductor, now part of onsemi. These devices are designed to minimize PCB layout complexity while providing reliable non-volatile storage. The family supports various packaging options and temperature grades to suit diverse industrial and consumer applications, maintaining compatibility with standard IIC bus protocols.

Memory IC Replacement Considerations

Direct replacements include other 8K-bit IIC EEPROMs from compatible manufacturers such as the M24C08 series. When substituting, verify pinout compatibility, specifically the placement of the Write Protect pin if using an NM24C09 equivalent. Ensure the replacement device supports the required 400 kHz clock frequency and operates within the same voltage and temperature constraints.

Memory IC FAQ

Does the NM24C08LN support hardware write protection?

No, the NM24C08LN does not have a Write Protect (WP) pin. Hardware write protection for the upper half of memory is a feature exclusive to the NM24C09 variant.

What is the maximum clock frequency supported by this device?

The device supports a maximum clock frequency of 400 kHz when operating within the 2.7V to 5.5V supply voltage range.

How is the device addressed on the IIC bus?

The device uses a fixed 4-bit device type identifier (1010) followed by address bits A2, A1, and A0. For the 8K-bit density, only the A2 pin is available for device selection, allowing four page blocks to be addressed.