24AA025-I/P

Memory IC Overview

The Microchip Technology 24AA025-I/P is a 2 Kbit (256 x 8) Serial Electrically Erasable PROM featuring an I2C-compatible 2-wire serial interface. It operates on a single supply voltage ranging from 1.7V to 5.5V with typical standby current of 1 μA and active read current of 1 mA. The device supports clock frequencies up to 400 kHz, providing a maximum access time of 900 ns at VCC ≥ 1.8V. It includes a 16-byte page write buffer and self-timed erase/write cycles with a maximum duration of 5 ms. Designed for industrial applications, it functions within a temperature range of -40°C to +85°C and offers high reliability with over 1 million erase/write cycles and data retention exceeding 200 years.

Memory IC Feature Summary

• Supports cascading up to eight devices on the same bus using hardware address pins A0, A1, and A2 for contiguous memory expansion.
• Includes Schmitt trigger inputs and output slope control to suppress noise spikes and eliminate ground bounce during operation.
• Features a self-timed internal write cycle that automatically manages erase/write operations without external control signals.
• Provides robust ESD protection rated at greater than 4,000V across all pins.

Memory IC Applications

• Data acquisition systems requiring non-volatile storage
• Personal communications devices
• Industrial automation controllers

Memory IC Procurement Notes

Verify the specific suffix 'I' confirms the Industrial temperature grade (-40°C to +85°C) and '/P' denotes the 8-lead PDIP package. Confirm the part number lacks the '24' prefix variant if hardware write protection is not required, as the 24AA025 does not utilize the WP pin internally. Ensure compatibility with the target system's I2C voltage levels and pull-up resistor requirements.

Memory IC Selection Notes

Select this component when a 2 Kbit EEPROM capacity is needed with standard I2C connectivity. The Industrial temperature rating makes it suitable for general-purpose electronics operating in moderate environmental conditions. Consider the 24AA024 variant if hardware write protection via the WP pin is necessary, or the 24LC025 if the application strictly requires a minimum supply voltage of 2.5V.

Memory IC Part Context

This device belongs to the 24AA024/24LC024/24AA025/24LC025 family of low-power CMOS Serial EEPROMs. It shares functional similarities with the 24AA024 but omits the hardware write-protect pin. It is distinct from the 24LC series by its wider voltage operating range starting at 1.7V. The PDIP package provides through-hole mounting options for prototyping or specific board layout requirements.

Memory IC Replacement Considerations

Public confirmed substitute part numbers: 24AA025T-I/SN, 24AA025-I/MS, 24AA025-I/ST.