25C160-I/SN

Memory IC Overview

The Microchip Technology 25C160-I/SN is a 16 Kbit (2048 x 8-bit) Serial Electrically Erasable PROM accessed via an SPI-compatible serial bus. It operates within a VCC range of 4.5V to 5.5V with a maximum clock frequency of 3 MHz. The device supports industrial temperature ranges (-40°C to +85°C) and features low-power CMOS technology with typical standby current of 500 nA. It includes block write protection, self-timed erase/write cycles, and high reliability with over 1 million cycle endurance and data retention exceeding 200 years.

Memory IC Feature Summary

• Supports hardware write protection via the WP pin combined with the WPEN bit in the Status register.
• Includes built-in power on/off data protection circuitry and a write enable latch to prevent inadvertent writes.
• Allows selective array protection by enabling users to protect none, one-quarter, one-half, or all of the memory array.

Memory IC Applications

• Microcontroller systems requiring non-volatile data storage for configuration parameters.
• Industrial control applications needing reliable data retention under varying environmental conditions.
• Embedded systems utilizing SPI interfaces for sequential read operations.

Memory IC Procurement Notes

Verify that the application voltage supply strictly adheres to the 4.5V to 5.5V operating range specified for the 25C160 variant. Confirm the package type matches the SOIC-8 designation. Ensure compatibility with the Industrial temperature grade (-40°C to +85°C). Note that this specific part number is not recommended for new designs; consult the manufacturer for updated alternatives such as the 25AA160A/B or 25LC160A/B series.

Memory IC Selection Notes

Select this component when a 5V-only supply system requires SPI EEPROM functionality with robust hardware write protection. The 25C160 is distinct from the 25LC160 due to its higher minimum voltage requirement and slightly different clock speed characteristics. It is suitable for environments where extended temperature performance up to 125°C is required using the 'E' suffix variant, though the 'I' suffix covers standard industrial ranges.

Memory IC Part Context

The 25C160 belongs to the 25XX160 family of 16 Kbit Serial EEPROMs manufactured by Microchip Technology. This family shares common architectural features including SPI interface compatibility and page-based write capabilities. The 'C' designation specifically indicates the 5V operation variant, distinguishing it from the 1.8V/2.5V compatible 25AA160 and 25LC160 models within the same datasheet documentation.

Memory IC Replacement Considerations

Publicly confirmed substitute part numbers include 25AA160A/B and 25LC160A/B. These newer variants offer improved specifications and are recommended by the manufacturer for new designs. Verify voltage compatibility and pinout equivalence before substitution.