AT25020AN-10SU-1.8

Memory IC Overview

The AT25020AN-10SU-1.8 is a serial electrically erasable programmable read-only memory (EEPROM) device providing 2048 bits of storage, organized as 256 words of 8 bits each. It operates within a supply voltage range of 1.8V to 5.5V and supports SPI clock frequencies up to 20 MHz at 5V. The component utilizes an 8-lead JEDEC SOIC package and functions as a slave device on the serial interface.

Memory IC Feature Summary

• Supports SPI Modes 0 and 3 with hardware write protection via the WP pin
• Features block write protection allowing selection of one-quarter, one-half, or entire array segments
• Includes a HOLD pin to suspend serial communication without resetting the sequence
• Provides self-timed write cycles with high endurance and long data retention

Memory IC Applications

• Industrial applications requiring low-power operation
• Commercial systems needing non-volatile data storage
• Microcontroller-based designs utilizing SPI interfaces

Memory IC Procurement Notes

Verify that the specific ordering suffix corresponds to the required voltage range and package type. Confirm RoHS compliance status and lead finish specifications against current manufacturer documentation. Ensure the source document matches the exact part number to avoid discrepancies in electrical characteristics or physical dimensions.

Memory IC Selection Notes

Select this component for designs requiring small footprint serial EEPROM with flexible voltage operation. Consider the 8-byte page write capability for efficient data programming. Evaluate the block write protection features if security against inadvertent writes is necessary for the application environment.

Memory IC Part Context

This device belongs to the AT25010A/020A/040A family of serial EEPROMs manufactured by Atmel Corporation. The family shares identical interface protocols and functional blocks, differing primarily in memory density. The AT25020A variant specifically offers double the capacity of the AT25010A while maintaining the same pinout and operational characteristics.

Memory IC Replacement Considerations

Compatible substitutes include AT25010A and AT25040A variants from the same family. These parts share identical pin configurations and instruction sets, allowing for direct pin-compatible upgrades or downgrades depending on memory requirements.