25LC160A-I/ST

Overview

The Microchip Technology 25LC160A-I/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 at VCC ≥ 4.5V. 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 incorporates a 16-byte page size, self-timed erase/write cycles with a maximum duration of 5 ms, and high reliability metrics including 1 million endurance cycles and over 200 years of data retention.

Feature Summary

• Supports hardware write protection via the WP pin and STATUS register bits for array security
• Includes power-on/off data protection circuitry and a write enable latch mechanism
• Features a HOLD input to pause serial communication without resetting the sequence

Applications

• Microcontroller system data storage
• Configuration parameter retention
• Calibration value storage

Procurement Notes

Verify the specific suffix 'I/ST' corresponds to the Industrial temperature grade (-40°C to +85°C) and TSSOP-8 package. Confirm that the 'A' designation indicates the 16-byte page size variant rather than the 32-byte 'B' version. Ensure compatibility with the required SPI mode and voltage levels before finalizing procurement.

Selection Notes

Select this component when a 16 Kbit capacity with SPI interface is required in a surface-mount TSSOP-8 package. The 'A' version is appropriate for designs utilizing 16-byte page writes. Consider the 'B' version if 32-byte pages are preferred, or the 'AA' series if lower voltage operation below 2.5V is necessary.

Part Context

This part belongs to the 25XX160A/B family of 16 Kbit Serial EEPROMs. The 'LC' prefix denotes a 2.5V minimum operating voltage, distinguishing it from the 'AA' (1.8V min) and 'C' (5V only) variants. The 'I' suffix specifies the industrial temperature rating, while 'ST' identifies the 8-lead Thin Shrink Small Outline Package.

Replacement Considerations

The 25LC160B-I/ST offers identical electrical characteristics but features a 32-byte page size instead of 16 bytes. The 25LC160-I/SN provides the same functionality in an SOIC-8 package.