25AA160AT-I/SN

Memory IC Overview

The Microchip Technology 25AA160AT-I/SN 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 and operates within a supply voltage range of 1.8 V to 5.5 V. The device supports industrial temperature ranges from -40 °C to +85 °C and is housed in an 8-lead SOIC package.

Memory IC Feature Summary

• Supports sequential read operations with automatic address pointer incrementation across the memory array.
• 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 suspension of serial communication without resetting the sequence or requiring retransmission.

Memory IC Applications

• Direct interface with microcontroller families possessing built-in SPI ports
• Systems utilizing discrete I/O lines programmed for software-based SPI communication
• Applications requiring hardware-level block write protection

Memory IC Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging configuration. Confirm the 'I' designation aligns with required industrial temperature specifications. Ensure the 'SN' package code matches the target PCB footprint requirements. Validate RoHS compliance status against current manufacturing standards before finalizing procurement orders.

Memory IC Selection Notes

Select this component when a 16-byte page size is required for write operations. Choose this variant over the 'B' version if smaller page granularity is preferred. Ensure the system voltage supports the 1.8 V minimum operating threshold. Verify that the 10 MHz maximum clock speed meets the application's timing constraints.

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 other devices in the series but differs in page size and voltage specifications. The 'A' designation specifically denotes the 16-byte page architecture compared to the 32-byte pages found in 'B' variants.

Memory IC Replacement Considerations

The 25AA160B-I/SN serves as a direct physical replacement but features a 32-byte page size instead of 16 bytes. Software must be adjusted to prevent page boundary crossings during write operations. Other family members like the 25LC160A require a minimum 2.5 V supply voltage.