25LC160B-E/ST

Overview

The Microchip Technology 25LC160B-E/ST 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. The device supports a supply voltage range of 2.5 V to 5.5 V and operates within an extended temperature range of -40 °C to +125 °C. It is housed in an 8-lead TSSOP package.

Feature Summary

• Supports 32-byte page write operations for efficient data storage
• Includes hardware write protection via the WP pin and software block protection
• Features self-timed erase and write cycles with built-in power-on/off data protection

Applications

• Industrial control systems requiring non-volatile data retention
• Automotive electronics operating under high temperature conditions
• Embedded microcontroller memory expansion via SPI interface

Procurement Notes

Verify that the ordering suffix 'E' corresponds to the Automotive grade (-40 °C to +125 °C) as specified in the datasheet selection table. Confirm the 'ST' suffix indicates the 8-lead TSSOP package. Ensure compatibility with system voltage requirements, noting this variant requires a minimum of 2.5 V.

Selection Notes

Select this component when automotive-grade temperature stability is required alongside standard SPI EEPROM functionality. The 'B' version provides a larger 32-byte page size compared to the 'A' version, improving write efficiency. Verify that the host controller supports the necessary SPI modes and voltage levels for reliable communication.

Part Context

This part belongs to the 25LC160A/B family of 16 Kbit Serial EEPROMs from Microchip Technology. The 'LC' designation indicates a 2.5 V to 5.5 V supply range, distinguishing it from the 'AA' series which supports lower voltages. The 'B' suffix denotes the 32-byte page architecture.

Replacement Considerations

The 25LC160A-E/ST serves as a functional alternative but features a smaller 16-byte page size. Other compatible parts include the 25LC160B-I/ST for industrial temperature ranges or variants with different package types such as SOIC or MSOP.