24AA04T-I/MC

Memory IC Overview

The Microchip Technology 24AA04T-I/MC is a 4-Kbit (512 x 8) Electrically Erasable PROM (EEPROM) featuring a two-wire I²C serial interface. It operates on a single supply voltage ranging from 1.7V to 5.5V with a maximum clock frequency of 400 kHz at voltages above 2.5V, and 100 kHz below 2.5V. The device utilizes low-power CMOS technology, drawing a maximum active current of 1 mA and standby current of 1 µA. It supports page writes of up to 16 bytes with a maximum write cycle time of 5 ms. The component is housed in an 8-lead DFN package and is rated for industrial temperatures between -40°C and +85°C.

Memory IC Feature Summary

• Supports bidirectional data transmission via a standard two-wire I²C compatible serial bus protocol.
• Includes hardware write protection controlled by the WP pin to inhibit memory writes when tied high.
• Features Schmitt trigger inputs and noise suppression filters to ensure reliable operation on noisy buses.
• Provides output slope control to eliminate ground bounce during switching operations.

Memory IC Applications

• Non-volatile data storage for system configuration parameters
• Calibration data retention in embedded systems
• Device identification and security code storage

Memory IC Procurement Notes

Verify that the ordering suffix 'T' corresponds to tape-and-reel packaging as indicated by distributor listings. Confirm the 'I' suffix denotes the industrial temperature range (-40°C to +85°C). Ensure the specific DFN package variant matches the design footprint requirements. Cross-reference the datasheet revision to confirm electrical characteristics remain consistent with the intended application voltage levels.

Memory IC Selection Notes

Select this part for applications requiring low-voltage operation down to 1.7V and I²C connectivity. The 400 kHz speed is suitable for general-purpose data logging where higher speeds are unnecessary. Consider the 8-lead DFN package for space-constrained surface-mount designs. Verify that the 16-byte page buffer size aligns with the host controller's write strategy to prevent data rollover across page boundaries.

Memory IC Part Context

This component belongs to the 24XX04 family of 4-Kbit serial EEPROMs, which also includes the 24LC04B and 24FC04 variants. While sharing similar architecture and interfaces, these variants differ in minimum operating voltage and maximum clock frequency specifications. The 24AA04 specifically targets low-voltage applications with a 1.7V lower limit compared to the 2.5V requirement of the 24LC04B.

Memory IC Replacement Considerations

• 24AA04T-I/MCDKR
• 24AA04T-I/MCCT

Memory IC FAQ

How does the device handle page write operations that cross physical page boundaries?

If a page write command attempts to write across a physical page boundary, the data wraps around to the beginning of the current page, overwriting previously stored data, rather than proceeding to the next page.

What is the function of the A0, A1, and A2 pins on this device?

These pins are not used by the 24AA04 device. They may be left floating or tied to either VSS or VCC without affecting functionality.