25LC160A-I/MS

Overview

The Microchip Technology 25LC160A-I/MS 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 operates within a supply voltage range of 2.5 V to 5.5 V and supports industrial temperature ranges from -40°C to +85°C. It is housed in an 8-lead MSOP package.

Feature Summary

• Supports 16-byte page write operations for efficient data storage.
• Includes built-in power-on/off data protection circuitry and a write enable latch.
• Features programmable block write protection allowing partial or full array locking.
• Provides a HOLD pin to pause serial communication without resetting the sequence.

Applications

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

Procurement Notes

Verify the specific suffix 'I' confirms the industrial temperature range (-40°C to +85°C) and 'MS' denotes the MSOP package. Confirm RoHS compliance status as required by your assembly specifications. Ensure the design accounts for the 16-byte page boundary restrictions during software implementation.

Selection Notes

Select this component when a low-pin-count, non-volatile memory solution is required for small data sets. The 16Kbit capacity suits applications needing persistent storage for settings or logs. Verify that the host microcontroller supports SPI Mode 0,0 or Mode 1,1 timing requirements.

Part Context

This part belongs to the 25XX160A/B family of 16 Kbit Serial EEPROMs. The 'LC' designation indicates a 2.5V minimum operating voltage, distinguishing it from the AA series which supports lower voltages. The 'A' version specifies a 16-byte page size, whereas the 'B' version offers 32-byte pages.

Replacement Considerations

Public confirmed substitute part numbers: 25LC160B-I/MS (32-byte page), 25AA160A-I/MS (1.8V support).

FAQ

How does the HOLD pin function during operation?

The HOLD pin allows the user to pause serial communication without resetting the sequence. Transitions on SI, SCK, and SO are ignored while held low, and communication resumes when the pin is brought high.

What happens if a page write crosses a physical boundary?

If a Page Write command attempts to cross a physical page boundary, the data wraps around to the beginning of the current page instead of writing to the next page.