25AA160A-I/ST

Memory IC Overview

The Microchip Technology 25AA160A-I/ST is a 16 Kbit Serial Electrically Erasable PROM featuring a 2048 x 8-bit organization. It utilizes an SPI-compatible serial bus with a maximum clock frequency of 10 MHz. The device supports a supply voltage range of 1.8 V to 5.5 V and operates within an industrial temperature range of -40 °C to +85 °C. It incorporates a 16-byte page size, self-timed erase/write cycles with a maximum duration of 5 ms, and high reliability metrics including 1,000,000 erase/write cycle endurance and data retention exceeding 200 years.

Memory IC Feature Summary

• Supports hardware write protection via the WP pin and STATUS register bits for array security
• Includes built-in power-on/off data protection circuitry and a write enable latch
• Allows serial communication pausing via the HOLD input without resetting the sequence

Memory IC Applications

• Microcontroller systems requiring non-volatile data storage
• Industrial control applications operating in wide temperature ranges
• Embedded devices utilizing standard SPI interfaces

Memory IC Procurement Notes

Verify that the specific suffix 'I' confirms the Industrial temperature grade (-40 °C to +85 °C) and 'ST' denotes the SOIC-8 package. Confirm the 'A' variant designation corresponds to the 16-byte page size requirement. Ensure compatibility with the 1.8 V to 5.5 V supply voltage range for your target system design.

Memory IC Selection Notes

Select this component when a 16 Kbit capacity with low-voltage operation down to 1.8 V is required. The 'A' version provides a 16-byte page buffer, distinct from the 32-byte pages found in 'B' versions. Verify that the host microcontroller supports the necessary SPI modes and timing constraints for reliable data transfer at the specified clock frequencies.

Memory IC Part Context

This part belongs to the 25XX160A/B family of 16 Kbit Serial EEPROMs manufactured by Microchip Technology. It shares functional similarities with the 25LC160A series but differs in its minimum operating voltage specifications. The device is designed for direct interface with popular microcontroller families, offering a compact solution for persistent memory needs in space-constrained electronic designs.

Memory IC Replacement Considerations

The 25AA160B-I/ST serves as a compatible alternative within the same package, differing only in page size (32 bytes). The 25LC160A-I/ST is functionally similar but requires a higher minimum supply voltage of 2.5 V.