25C160-E/P

Memory IC Overview

The Microchip Technology 25C160-E/P is a 16 Kbit (2048 x 8-bit) Serial Electrically Erasable PROM featuring an SPI-compatible interface. It operates within a voltage range of 4.5V to 5.5V with a maximum clock frequency of 3 MHz. The device supports industrial and automotive temperature ranges (-40°C to +125°C for the 'E' suffix). Key electrical characteristics include a typical standby current of 1 µA, read current of 500 µA, and write current of 3 mA. It offers 1 M cycle endurance, >200 years data retention, and ESD protection exceeding 4000V.

Memory IC Feature Summary

• Supports block-level write protection allowing selection of none, 1/4, 1/2, or all array segments.
• Includes built-in power on/off data protection circuitry and a write enable latch mechanism.
• Features a hold pin capability to pause serial communication without resetting the sequence.

Memory IC Applications

• Microcontroller system data storage
• Industrial control applications
• Automotive electronics

Memory IC Procurement Notes

Verify the specific ordering suffixes to confirm package type and temperature grade. The 'P' suffix indicates an 8-lead PDIP package, while 'SN' denotes SOIC. The 'E' suffix specifies the extended automotive temperature range. Confirm RoHS compliance status through official manufacturer documentation prior to procurement.

Memory IC Selection Notes

Select this component for designs requiring robust write protection and high reliability in harsh environments. Ensure the supply voltage remains within the 4.5V to 5.5V operational window. Consider the 5 ms internal write cycle time when designing timing-critical sequences. Verify that the host microcontroller supports the required SPI modes and signal levels.

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 variants but is distinguished by its wider operating voltage range and extended temperature capabilities suitable for automotive applications.

Memory IC Replacement Considerations

Microchip recommends using the 25AA160A/B or 25LC160A/B series instead of this product for new designs.

Memory IC FAQ

How does the Write Protect (WP) pin function?

The WP pin works in conjunction with the WPEN bit in the Status register. When WP is low and WPEN is high, writing to nonvolatile bits in the Status register is disabled. If WPEN is low, the WP pin function is blocked.

What happens to the write enable latch during operation?

The write enable latch is reset upon power-up, after a successful WRDI instruction, after a successful WRSR instruction, and after any completed WRITE instruction.