24AA025T-I/MNY

Memory IC Overview

The Microchip Technology 24AA025T-I/MNY is a 2 Kbit (256 x 8-bit) serial Electrically Erasable PROM featuring an I²C-compatible 2-wire interface. It operates on a single supply voltage ranging from 1.7V to 5.5V and supports clock frequencies of up to 400 kHz at VCC ≥ 1.8V, or 100 kHz at lower voltages. The device utilizes low-power CMOS technology with typical standby current of 1 μA and active read current of 1 mA. It includes a 16-byte page write buffer, Schmitt trigger inputs for noise suppression, and output slope control to minimize ground bounce.

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.
• Features a 16-byte page write buffer that allows multiple data bytes to be stored internally before being written to the EEPROM array upon receiving a Stop condition.
• Includes internal VCC threshold detection to disable erase/write logic if power drops below nominal levels, alongside Schmitt trigger inputs for enhanced noise immunity.

Memory IC Applications

• Low-power embedded systems requiring non-volatile data storage
• Industrial control applications operating within industrial temperature ranges
• Bus expansion projects utilizing multiple EEPROM devices on a shared I²C line

Memory IC Procurement Notes

Verify the specific package marking code 'AR1' for the TDFN-8 variant to confirm authenticity. Ensure the application design accounts for the absence of a hardware write-protect pin on this specific model compared to the 24AA024 series. Confirm that the system voltage remains above 1.7V to maintain full 400 kHz clock compatibility.

Memory IC Selection Notes

Select this component when a compact TDFN-8 footprint is required for space-constrained designs. Choose this part over the 24LC025 if operation below 2.5V is necessary, as the 24LC025 requires a minimum of 2.5V. This model is suitable for applications needing software-controlled write protection rather than hardware pin-based locking.

Memory IC Part Context

This device belongs to the 24AA024/24LC024/24AA025/24LC025 family of 2 Kbit Serial EEPROMs. It shares functional similarities with the 24AA024 but lacks the dedicated hardware write-protect pin found in the 24XX024 variants. The 'I' suffix indicates an industrial temperature range rating, while 'MNY' specifies the TDFN-8 package type.

Memory IC Replacement Considerations

The 24AA025T-I/SN serves as a direct replacement offering identical electrical specifications but utilizes an 8-SOIC package instead of TDFN-8. Other family members like the 24LC025 are functionally similar but require a higher minimum supply voltage of 2.5V.