25AA020AT-I/OT

Memory IC Overview

The Microchip Technology 25AA020AT-I/OT is a 2 Kbit Serial Electrically Erasable Programmable Read-Only Memory (EEPROM) utilizing a Serial Peripheral Interface (SPI). It features a 256 x 8-bit organization with a maximum clock frequency of 10 MHz. The device operates within a supply voltage range of 1.8V to 5.5V and supports industrial temperature ranges from -40°C to +85°C. It is housed in a 6-lead SOT-23 package.

Memory IC Feature Summary

• Supports write page mode for up to 16 bytes per cycle
• Includes built-in power-on/off data protection circuitry
• Features hardware write-protect pin for array security
• Allows serial communication pause via hold input

Memory IC Applications

• Microcontroller system data storage
• Configuration parameter retention
• Calibration value storage
• Device identification information logging

Memory IC Procurement Notes

Verify the specific suffix 'I/OT' corresponds to the Industrial temperature grade (-40°C to +85°C) and the 6-lead SOT-23 package configuration. Confirm that the ordering suffix does not alter the functional specifications or electrical characteristics defined in the official datasheet DS21833G. Ensure compatibility with the required SPI bus interface levels.

Memory IC Selection Notes

Select this component when a low-pin-count EEPROM is required for space-constrained designs. The 1.8V minimum operating voltage makes it suitable for low-voltage logic systems. Verify that the application requires SPI interface compatibility and can accommodate the internal write cycle time constraints during programming operations.

Memory IC Part Context

This part belongs to the 25XX020A family of 2 Kbit SPI Serial EEPROMs manufactured by Microchip Technology. It shares architectural similarities with the 25LC020A but differs in its lower minimum operating voltage specification. The device is designed for non-volatile data retention in embedded applications requiring reliable byte-level access.

Memory IC Replacement Considerations

25AA020A-I/OT

Memory IC FAQ

How does the HOLD pin function during serial communication?

The HOLD pin suspends transmission without resetting the sequence. Inputs are ignored except Chip Select, allowing the host to service interrupts while maintaining the current address pointer.

What happens if a page write crosses a physical boundary?

If a Page Write command attempts to cross a physical page boundary, the data wraps around to the beginning of the current page instead of writing to the next page.