25LC160B-I/PG

Overview

The Microchip Technology 25LC160B-I/PG is a 16 Kbit (2048 x 8-bit) Serial Electrically Erasable PROM. It utilizes a low-power CMOS technology and interfaces via a standard SPI-compatible serial bus with a maximum clock frequency of 10 MHz. The device features a 32-byte page size for efficient data writing. It operates within a supply voltage range of 2.5V to 5.5V and supports an industrial temperature range from -40°C to +85°C. The component is housed in an 8-lead PDIP package.

Feature Summary

• Supports high-speed SPI communication up to 10 MHz
• Includes hardware write protection via dedicated pin and status register bits
• Features self-timed erase and write cycles with internal timing control
• Provides block-level write protection for specific memory segments

Applications

• Microcontroller system data storage
• Configuration parameter retention
• Calibration value storage
• Small data logging applications

Procurement Notes

Verify the 'I' suffix confirms the industrial temperature range (-40°C to +85°C). Confirm the '/PG' suffix corresponds to the 8-lead PDIP package type. Ensure the 'B' designation indicates the 32-byte page size variant rather than the 16-byte 'A' version. Check datasheet revision history for any packaging or marking updates.

Selection Notes

Select this part when a 16 Kbit capacity is required with SPI interface compatibility. Choose the 'B' version over 'A' if 32-byte page writes are preferred for efficiency. Ensure the operating environment falls within the specified industrial temperature limits. Verify that the 2.5V minimum supply voltage aligns with the system power rails.

Part Context

This component belongs to the 25XX160A/B family of 16 Kbit Serial EEPROMs manufactured by Microchip Technology. The family includes variants with different voltage ranges (AA vs LC) and page sizes (A vs B). The 25LC160B specifically denotes the 2.5V-5.5V operation range with 32-byte pages, distinguishing it from the lower-voltage AA series.

Replacement Considerations

Direct replacements include other 25LC160B variants with different packages (e.g., SOIC, TSSOP) or the 25LC160A series if 16-byte pages are acceptable. Cross-referencing with 25AA160B is possible if lower voltage operation is needed, though electrical characteristics differ.