25C160/P

Memory IC Overview

The Microchip Technology 25C160/P is a 16 Kbit (2048 x 8-bit) Serial Electrically Erasable PROM. It features an SPI-compatible serial bus interface with a maximum clock frequency of 3 MHz and operates within a supply voltage range of 4.5 V to 5.5 V. The device utilizes an 8-pin PDIP package and supports industrial (-40°C to +85°C) and automotive (-40°C to +125°C) temperature ranges. Key electrical characteristics include a typical standby current of 500 nA, a write cycle time of 5 ms maximum, and data retention exceeding 200 years.

Memory IC Feature Summary

• Supports block write protection for none, 1/4, 1/2, or all array segments via status register configuration.
• Includes built-in power on/off data protection circuitry and a dedicated write-protect pin.
• Features a hold input to pause serial communication without resetting the sequence.

Memory IC Applications

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

Memory IC Procurement Notes

Verify that the specific ordering suffix matches the required package type and temperature grade. Confirm the voltage range requirements align with the 4.5 V to 5.5 V specification. Check for any manufacturer change notifications regarding component updates or lifecycle status before finalizing procurement plans.

Memory IC Selection Notes

Select this component when a 5V-only operating environment is available and high-temperature automotive reliability is required. Ensure the host microcontroller supports SPI Mode 0,0 or Mode 1,1 timing. Verify that the 3 MHz maximum clock frequency meets the system's data throughput requirements.

Memory IC Part Context

This part belongs to the 25XX160 family of 16 Kbit Serial EEPROMs from Microchip Technology. It shares architectural similarities with the 25AA160 and 25LC160 but is specifically optimized for higher voltage operation. The datasheet indicates it is not recommended for new designs, suggesting newer alternatives may be preferred.

Memory IC Replacement Considerations

Public confirmed substitute part numbers: None identified in source material.

Memory IC FAQ

How does the HOLD pin function during serial communication?

The HOLD pin suspends transmission mid-sequence without resetting the serial pointer. It must be held low while SCK is low to pause, and brought high while SCK is low to resume.

What is the purpose of the WPEN bit in the Status Register?

The WPEN bit acts as an enable for the hardware Write-Protect (WP) pin. When set high, the WP pin can disable writes; when low, the WP pin function is blocked regardless of its state.