25C080T/SN

Memory IC Overview

The Microchip Technology 25C080T/SN is an 8 Kbit (1024 x 8-bit) Serial Electrically Erasable PROM. It utilizes a SPI-compatible serial bus for data access, requiring SCK, SI, SO, and CS signals. The device operates within a supply voltage range of 4.5V to 5.5V with a maximum clock frequency of 3 MHz. It 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 and a maximum write cycle time of 5 ms.

Memory IC Feature Summary

• Integrated hardware write protection via the WP pin and Status register bits.
• Supports sequential read operations with automatic address pointer incrementation.
• Includes self-timed erase and write cycles controlled by a write enable latch.

Memory IC Applications

• Microcontroller system data storage
• Industrial control applications
• Automotive electronic modules

Memory IC Procurement Notes

Verify that the specific ordering suffix matches the required package type and temperature grade. Confirm the device revision aligns with design requirements, noting that this family may be superseded by newer variants like the 25LC080A/B. Ensure compatibility with the target system's SPI interface timing constraints and voltage levels before finalizing procurement.

Memory IC Selection Notes

Select this component when a high-temperature automotive rating or extended industrial range is required alongside standard SPI connectivity. Compare against the 25LC080 if lower voltage operation is needed, as the 25C080 requires a minimum of 4.5V. Evaluate the 16-byte page write capability against application update frequencies to optimize write cycle efficiency.

Memory IC Part Context

This part belongs to the 25XX080 family of 8 Kbit Serial EEPROMs from Microchip Technology. It shares architectural similarities with the 25AA080 and 25LC080 but is distinguished by its specific voltage and temperature specifications. The datasheet indicates it is not recommended for new designs, suggesting consideration of updated alternatives.

Memory IC Replacement Considerations

Public confirmed substitute part numbers: 25LC080T-I/SN, 25AA080T-I/SN.

Memory IC FAQ

How does the HOLD pin function during serial communication?

The HOLD pin suspends transmission without resetting the sequence. It must be pulled low while SCK is low to pause communication, tri-stating the SO line until brought high again.

What is the purpose of the Write Enable Latch?

The Write Enable Latch must be set via the WREN instruction before any write operation can be completed. It resets automatically after power-up, successful write execution, or WRDI instruction.