24AA01/P

Memory IC Overview

The Microchip Technology 24AA01/P is a 1 Kbit Electrically Erasable PROM (EEPROM) organized as one block of 128 x 8-bit memory. It features a 2-wire serial interface compatible with I2C protocols. The device operates on a single supply voltage ranging from 1.7V to 5.5V, supporting industrial temperature ranges from -40°C to +85°C. It utilizes low-power CMOS technology with maximum standby current of 1 µA and active read current of 1 mA. The component includes an 8-byte page write buffer, hardware write-protect functionality via the WP pin, and Schmitt trigger inputs for noise suppression.

Memory IC Feature Summary

• Supports bidirectional data transmission over a 2-wire serial bus with I2C compatibility
• Includes hardware write protection controlled by the WP pin to inhibit write operations
• Features Schmitt trigger inputs and filter circuits to suppress noise spikes on the SCL and SDA lines
• Provides acknowledge polling capability to determine when internal write cycles are complete

Memory IC Applications

• Data storage in battery-powered devices requiring low standby current
• Configuration parameter retention in embedded systems
• Calibration data storage for sensors and measurement instruments
• Device identification and serial number storage in consumer electronics

Memory IC Procurement Notes

Verify that the ordering suffix 'P' corresponds to the 8-Lead Plastic Dual In-Line package. Confirm the specific temperature grade required for the application environment. Ensure the design supports the necessary pull-up resistors for the open-drain SDA and SCL lines. Check for RoHS compliance status if restricted substances are a concern. Validate that the operating voltage range aligns with the system power supply.

Memory IC Selection Notes

Select this component when a small, non-volatile memory solution is needed for low-volume data storage. It is suitable for applications where space is limited but through-hole mounting is preferred. Consider the 1.7V minimum operating voltage for compatibility with low-voltage logic families. Evaluate the need for hardware write protection if data integrity against accidental writes is critical. Compare page write capabilities against byte write requirements for throughput needs.

Memory IC Part Context

The 24AA01 is part of the 24XX01 family of 1 Kbit serial EEPROMs manufactured by Microchip Technology. This family shares common architectural features such as the I2C interface and page write buffers. Other variants in the series include the 24LC01B and 24FC01, which differ primarily in operating voltage ranges and maximum clock frequencies. The 24AA01 specifically supports operation down to 1.7V, distinguishing it from higher-voltage counterparts.

Memory IC Replacement Considerations

Direct substitutes within the same package and electrical specifications may include other 24AA01 variants with different suffixes indicating alternative packages or temperature grades. Cross-family replacements like the 24LC01B require verification of the minimum operating voltage, as it starts at 2.5V compared to the 24AA01's 1.7V. Ensure any replacement maintains the 8-pin PDIP form factor and I2C protocol compatibility.