25AA010AT-I/ST

Memory IC Overview

The Microchip Technology 25AA010AT-I/ST is a 1 Kbit Serial Electrically Erasable Programmable Read-Only Memory (EEPROM) utilizing a SPI-compatible serial bus. It features a 128 x 8-bit organization with a maximum clock frequency of 10 MHz and operates within a supply voltage range of 1.8V to 5.5V. The device supports page write modes up to 16 bytes, self-timed erase/write cycles of 5 ms max, and block write protection. It is housed in an 8-lead TSSOP package and rated for industrial temperatures from -40°C to +85°C.

Memory IC Feature Summary

• Supports sequential read operations and page write modes up to 16 bytes
• Includes built-in hardware write protection via the WP pin and software control through the STATUS register
• Features a HOLD input to suspend communication without resetting the serial sequence

Memory IC Applications

• Microcontroller data storage
• Configuration parameter retention
• Calibration value storage

Memory IC Procurement Notes

Verify that the ordering suffix 'I' corresponds to the Industrial temperature grade (-40°C to +85°C) and 'ST' indicates the 8-lead TSSOP package. Confirm the 'T' suffix denotes tape and reel packaging if required by assembly equipment. Ensure the specific part number matches the datasheet DS21832H specifications for voltage and interface compatibility.

Memory IC Selection Notes

Select this component when a low-pin-count non-volatile memory solution is needed for small data sets. The 1.8V minimum operating voltage makes it suitable for modern low-power systems. The TSSOP package offers a compact footprint for space-constrained designs. Verify that the system's SPI controller can handle the required clock speeds and instruction formats.

Memory IC Part Context

This device belongs to the 25AA010A family of 1 Kbit SPI EEPROMs manufactured by Microchip Technology. It shares functional similarities with the 25LC010A but differs in its lower minimum operating voltage of 1.8V compared to 2.5V. The family provides high reliability with over 1 million erase/write cycles and data retention exceeding 200 years.

Memory IC Replacement Considerations

The 25AA010A-I/ST is a direct electrical and pin-compatible substitute for the 25AA010AT-I/ST, differing only in the absence of the tape-and-reel suffix. Other compatible variants include the 25LC010A series, though users must account for the higher minimum supply voltage requirement of 2.5V.