25AA040AT-I/MC

Memory IC Overview

The Microchip Technology 25AA040AT-I/MC is a 4 Kbit (512 x 8) Serial Electrically Erasable Programmable Read-Only Memory (EEPROM). It operates via a SPI-compatible serial bus with a maximum clock frequency of 10 MHz. The device supports a supply voltage range of 1.8V to 5.5V and features low-power CMOS technology with standby current as low as 5 µA. It includes hardware write protection, block write protection, and self-timed erase/write cycles of 5 ms max. The component is housed in an 8-lead MSOP package and is rated for industrial temperature ranges from -40°C to +85°C.

Memory IC Feature Summary

• Supports high-speed SPI communication with up to 10 MHz clock frequency
• Includes built-in hardware write protection and block write protection capabilities
• Features self-timed internal write cycles with automatic page write functionality
• Provides data retention exceeding 200 years and endurance of 1 million erase/write cycles

Memory IC Applications

• Microcontroller system configuration storage
• Calibration data and parameter storage
• Non-volatile memory for embedded systems requiring small data retention

Memory IC Procurement Notes

Verify the specific ordering suffix 'I/MC' corresponds to the Industrial temperature grade (-40°C to +85°C) and the 8-lead MSOP package type. Confirm that the 'T' suffix indicates tape and reel packaging if required for automated assembly processes. Ensure compatibility with the target system's SPI interface voltage levels and pinout requirements before finalizing procurement.

Memory IC Selection Notes

Select this part when a 4 Kbit EEPROM is needed with a wide 1.8V to 5.5V operating voltage range. It is suitable for applications requiring industrial temperature stability and compact surface-mount packaging. Consider alternatives like the 25LC040 series if automotive temperature grades or different voltage minimums are required.

Memory IC Part Context

This component belongs to the 25XX040A family of 4 Kbit Serial EEPROMs manufactured by Microchip Technology. The family shares identical functional specifications but varies by voltage range, temperature grade, and physical package. The 25AA variant specifically supports lower voltage operation starting at 1.8V compared to other family members.

Memory IC Replacement Considerations

Direct replacements include other 25AA040A variants with different packages (e.g., 25AA040AT-I/MS for MSOP tube) or temperature grades. Cross-family substitutes like the 25LC040AT-I/MC offer similar functionality but require a minimum supply voltage of 2.5V instead of 1.8V.