NM93C56M8

Memory IC Overview

The NM93C56M8 is a 2048-bit CMOS serial EEPROM organized as 128 x 16 bits. It utilizes the Microwire synchronous bus interface with Chip Select (CS), Serial Clock (SK), Data Input (DI), and Data Output (DO) signals. The device operates within a supply voltage range of 4.5V to 5.5V, supporting a maximum clock frequency of 1 MHz. It features self-timed write cycles with a typical duration of 10 ms and includes software-based write protection capabilities.

Memory IC Feature Summary

• Supports Microwire synchronous serial communication protocol
• Features self-timed internal programming cycles
• Includes software-controlled write enable and disable instructions

Memory IC Applications

• Microcontroller system configuration storage
• Industrial control parameter retention
• Embedded device calibration data storage

Memory IC Procurement Notes

Verify that the operating environment strictly maintains the required 4.5V to 5.5V power supply range, as lower voltages are not supported by this specific package variant. Confirm compatibility with the Microwire interface timing requirements before integration. Ensure proper handling procedures are followed due to the CMOS fabrication process characteristics.

Memory IC Selection Notes

Select this component when a 128-word x 16-bit memory structure is required for applications needing standard TTL-compatible logic levels. It is suitable for designs where space efficiency is prioritized via the SOIC-8 package but does not require extended temperature ranges or low-voltage operation below 4.5V.

Memory IC Part Context

This part belongs to the NM93C56 family of serial EEPROMs originally manufactured by Fairchild Semiconductor. The 'M8' suffix specifically denotes the 8-pin Small Outline package. The device provides non-volatile data storage using floating-gate CMOS technology, ensuring high reliability and endurance for repeated write operations in embedded systems.

Memory IC Replacement Considerations

CAT93C56

Memory IC FAQ

Does the NM93C56M8 require an erase cycle before writing?

No, the device does not require an Erase instruction prior to a Write instruction, allowing direct overwriting of existing data.

How is the write status monitored during programming?

The status can be polled by bringing the CS signal high; the DO pin outputs a logical 0 if busy or a logical 1 if ready.