25LC160A-I/SN

Overview

The Microchip Technology 25LC160A-I/SN 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 at VCC levels between 4.5V and 5.5V. The device operates within a supply voltage range of 2.5V to 5.5V and supports industrial temperature ranges from -40°C to +85°C. It utilizes low-power CMOS technology, offers 1,000,000 erase/write cycle endurance, and provides data retention exceeding 200 years.

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 programmable block write protection.
• Features a Hold input pin that allows suspension of serial communication without resetting the sequence or requiring retransmission.

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

Procurement Notes

Verify the specific suffix 'I' confirms the Industrial temperature rating (-40°C to +85°C). Confirm the 'SN' designation corresponds to the 8-lead SOIC package type. Ensure the 'A' variant is selected for the 16-byte page size requirement rather than the 'B' version which uses 32-byte pages. Cross-reference the datasheet revision to confirm compatibility with current manufacturing processes.

Selection Notes

Select this component when a 16 Kbit capacity is required with SPI interface compatibility. The 2.5V to 5.5V operating range suits standard logic systems. Consider the 16-byte page size limitation for write operations; if larger page writes are needed, evaluate the 'B' version variants instead. Ensure the application environment remains within the specified industrial temperature limits.

Part Context

This part belongs to the 25XX160A/B family of 16 Kbit Serial EEPROMs manufactured by Microchip Technology. The 'LC' prefix indicates a 2.5V minimum supply voltage operation, distinguishing it from the 'AA' series which supports lower voltages down to 1.8V. The 'A' suffix denotes the 16-byte page architecture, whereas 'B' devices utilize a 32-byte page structure.

Replacement Considerations

The 25LC160B-I/SN serves as a functional substitute but utilizes a 32-byte page size instead of 16 bytes. The 25AA160A-I/SN offers identical functionality but supports a wider voltage range starting at 1.8V. Verify that any replacement maintains the same SOIC-8 package and industrial temperature rating.