AT25256AN-10SU-1.8

Memory IC Overview

The AT25256AN-10SU-1.8 is a serial electrically-erasable programmable read-only memory (EEPROM) providing 262,144 bits of storage organized as 32,768 words of 8 bits each. It operates with a supply voltage range of 1.8V to 5.5V and supports SPI clock frequencies up to 10 MHz at this voltage level. The device utilizes an 8-lead JEDEC SOIC package and features industrial temperature operation from -40°C to +85°C.

Memory IC Feature Summary

• Supports SPI Modes 0 and 3 for synchronous serial communication
• Includes hardware write protection via the WP pin and software block protection
• Features self-timed write cycles with automatic return to standby state
• Provides high endurance and long-term data retention capabilities

Memory IC Applications

• Industrial control systems requiring non-volatile data storage
• Commercial applications necessitating low-power operation
• Embedded devices storing configuration parameters or calibration data

Memory IC Procurement Notes

Verify that the specific ordering suffix matches the required voltage range and package type. Confirm the component meets RoHS compliance standards if environmental regulations apply to your design. Ensure the source documentation aligns with the manufacturer's current specifications for the AT25256A family.

Memory IC Selection Notes

Select this component when a 256K-bit capacity is required within an 8-lead surface-mount package. It is suitable for designs operating between 1.8V and 5.5V where SPI compatibility is essential. Consider the 10 MHz speed rating for systems requiring moderate data throughput.

Memory IC Part Context

This part belongs to the AT25128A/256A family of SPI Serial EEPROMs manufactured by Microchip Technology (formerly Atmel). These devices are optimized for low-power and low-voltage applications. The family offers various package options including PDIP, SOIC, TSSOP, and dBGA2.

Memory IC Replacement Considerations

Check for AT25256A variants with different voltage suffixes (-2.7) or package codes (PU, TU, YH) if physical footprint or voltage requirements differ. Verify compatibility with existing firmware regarding instruction sets and timing parameters.