24AA044-I/MS

Memory IC Overview

The Microchip Technology 24AA044-I/MS is a 4-Kbit (512 x 8) serial electrically erasable PROM featuring an I2C-compatible Two-Wire interface. It operates on a single supply voltage ranging from 1.7V to 5.5V, with maximum clock frequencies of 1 MHz at VCC ≥ 2.2V, 400 kHz at 1.8V ≤ VCC < 2.2V, and 100 kHz below 1.8V. The device supports page writes up to 16 bytes with a maximum cycle time of 5 ms. It includes hardware write protection via the WP pin and offers industrial temperature range operation from -40°C to +85°C in an 8-lead MSOP package.

Memory IC Feature Summary

• Supports cascading up to four devices on a single bus using chip select inputs for expanded memory addressing.
• Includes Schmitt trigger inputs and noise suppression filters to ensure reliable data transmission on noisy buses.
• Features output slope control designed to eliminate ground bounce during switching operations.
• Provides hardware write protection capability through the dedicated WP pin to secure array data.

Memory IC Applications

• Embedded systems requiring non-volatile storage for configuration parameters
• Industrial control units needing reliable data retention under varying voltage conditions
• Consumer electronics utilizing low-power serial memory interfaces

Memory IC Procurement Notes

Verify that the ordering suffix matches the required package type and temperature grade. Confirm the specific voltage operating range requirements align with the device's frequency limitations at lower supply voltages. Ensure compatibility with the host controller's I2C pull-up resistor values for the intended clock speed. Check for any specific factory programming requirements if custom data initialization is needed prior to deployment.

Memory IC Selection Notes

Select this component when a 4-Kbit capacity is sufficient and I2C connectivity is required. The Industrial temperature grade (-40°C to +85°C) suits general commercial and industrial environments. Consider the 16-byte page buffer for efficient data writing compared to byte-write-only alternatives. Verify that the 1.7V minimum supply voltage meets the system's lowest operational power constraints.

Memory IC Part Context

This part belongs to the 24AA044 family of serial EEPROMs manufactured by Microchip Technology. It shares functional similarities with other members like the 24LC044 and 24FC044, differing primarily in voltage ranges and clock speeds. The 'I' suffix denotes the Industrial temperature range, while 'MS' specifies the 8-lead Micro Small Outline Package.

Memory IC Replacement Considerations

Direct substitutes within the same family include the 24AA044-E/MS for extended temperature applications or the 24LC044-I/MS for standard voltage ranges. Cross-family replacements may require verification of voltage compatibility and interface timing specifications.