25AA160/SN

Memory IC Overview

The Microchip Technology 25AA160/SN is a 16 Kbit Serial Electrically Erasable PROM featuring a 2048 x 8-bit organization. It operates on an SPI-compatible serial bus with SCK, SI, SO, and CS signals. The device supports a supply voltage range of 1.8V to 5.5V and a maximum clock frequency of 1 MHz. It utilizes an 8-pin SOIC package and functions within an industrial temperature range of -40°C to +85°C.

Memory IC Feature Summary

• Supports block write protection for none, 1/4, 1/2, or all of the memory array.
• Includes built-in power on/off data protection circuitry and a write enable latch.
• Features a hold pin to pause transmission without resetting the serial sequence.

Memory IC Applications

• Interface with microcontrollers lacking built-in SPI ports via discrete I/O lines.
• Data storage in systems requiring hardware write-protect capabilities.
• Applications necessitating low-power standby modes and high ESD protection.

Memory IC Procurement Notes

Verify that the specific ordering suffix matches the required package type and temperature grade. Confirm the voltage range requirements align with the 1.8V to 5.5V specification. Check for any errata sheets associated with this datasheet revision. Ensure the component meets RoHS compliance standards if applicable to your manufacturing process.

Memory IC Selection Notes

Select this component for designs requiring 16 Kbit non-volatile storage with SPI interface compatibility. Consider the 1 MHz maximum clock speed when designing system timing constraints. Evaluate the need for hardware write protection features provided by the WP pin and status register bits. Verify that the 8-pin SOIC package fits the available PCB footprint.

Memory IC Part Context

This device belongs to the 25XX160 family of Serial EEPROMs from Microchip Technology. It shares architectural similarities with the 25LC160 and 25C160 variants, differing primarily in operating voltage ranges and temperature specifications. The 25AA160 specifically targets applications requiring operation down to 1.8V.

Memory IC Replacement Considerations

Microchip recommends using the 25AA160A/B or 25LC160A/B series instead of this part for new designs. These newer variants offer updated specifications while maintaining functional compatibility with the existing 25XX160 architecture.