25AA160A-I/MS

Memory IC Overview

The Microchip Technology 25AA160A-I/MS is a 16 Kbit (2048 x 8-bit) Serial Electrically Erasable PROM. It features an SPI-compatible serial bus interface with a maximum clock frequency of 10 MHz. The device operates within a supply voltage range of 1.8 V to 5.5 V and supports industrial temperature ranges from -40 °C to +85 °C. It utilizes low-power CMOS technology, offering high endurance of 1,000,000 erase/write cycles and data retention exceeding 200 years. The component is housed in an 8-lead MSOP package.

Memory IC Feature Summary

• Supports sequential read operations and page write capabilities with a 16-byte page size for the 'A' version devices.
• Includes built-in write protection mechanisms such as a write enable latch, power-on/off data protection circuitry, and a dedicated write-protect pin.
• Features a hold input that allows communication pausing without resetting the serial sequence, facilitating higher priority interrupt servicing.

Memory IC Applications

• Direct interfacing with microcontroller families possessing built-in SPI ports
• Data storage applications requiring non-volatile memory with hardware write protection
• Systems utilizing discrete I/O lines programmed for software-based SPI communication

Memory IC Procurement Notes

Verify the specific suffix against official documentation to confirm package type and temperature grade. Ensure the ordering code matches the required voltage range and page size specifications. Confirm compliance requirements such as RoHS status prior to procurement. Cross-reference the manufacturer part number with authorized distributor listings to validate authenticity and current production status.

Memory IC Selection Notes

Select this component when a 16 Kbit capacity with SPI interface is required for industrial environments. The 1.8 V minimum operating voltage makes it suitable for low-power systems compared to 2.5 V variants. Consider the 16-byte page size limitation for write operations versus the 32-byte option available in 'B' version devices. Verify that the MSOP package dimensions fit the target PCB layout constraints.

Memory IC Part Context

This device 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 lower minimum operating voltage specification. The 'I' designation indicates an industrial temperature rating, distinguishing it from automotive-grade 'E' variants within the same product line.

Memory IC Replacement Considerations

The 25AA160B-I/MS serves as a compatible alternative within the same package, offering a 32-byte page size instead of 16 bytes. For systems requiring a 2.5 V minimum voltage, the 25LC160A-I/MS provides equivalent functionality. Verify pin compatibility and instruction set alignment before substituting these parts.