25C080/P

Memory IC Overview

The Microchip Technology 25C080/P is an 8 Kbit (1024 x 8-bit) Serial Electrically Erasable PROM accessed via a SPI-compatible serial bus. It operates within a VCC range of 4.5V to 5.5V with a maximum clock frequency of 3 MHz. The device features low-power CMOS technology, offering a typical standby current of 500 nA and read current of 500 µA. It supports self-timed erase and write cycles with a maximum cycle time of 5 ms. The component provides high reliability with 1 million endurance cycles and data retention exceeding 200 years. It includes block write protection and power-on/off data protection circuitry.

Memory IC Feature Summary

• Supports sequential read operations and page-level writes up to 16 bytes per cycle.
• Includes built-in hardware write protection via the WP pin and software control through the Status register.
• Features power-on/off data protection circuitry and a write enable latch to prevent inadvertent writes.

Memory IC Applications

• Microcontroller system configuration storage
• Parameter and calibration data logging
• Embedded application code storage

Memory IC Procurement Notes

Verify that the specific part number matches the required voltage range and temperature grade. Confirm package type availability as this component is not recommended for new designs. Check manufacturer documentation for any errata sheets or replacement recommendations before finalizing procurement specifications.

Memory IC Selection Notes

Select this component only if the design requires a 5.0V supply range and industrial or extended temperature operation. Ensure the host microcontroller supports SPI communication or can emulate it via discrete I/O lines. Consider newer alternatives like the 25AA080A/B or 25LC080A/B for new designs due to updated feature sets and broader voltage compatibility.

Memory IC Part Context

The 25C080 belongs to the 25XX080 family of 8 Kbit SPI Serial EEPROMs from Microchip Technology. This family also includes the 25AA080 and 25LC080 variants, which differ primarily in operating voltage ranges and supported clock frequencies. The 25C080 specifically targets applications requiring a 4.5V to 5.5V supply.

Memory IC Replacement Considerations

Publicly confirmed substitutes include the 25LC080A and 25AA080A/B series. These newer devices offer improved performance characteristics and are recommended by the manufacturer for new designs instead of the legacy 25C080.

Memory IC FAQ

What is the maximum clock frequency for the 25C080?

The maximum clock frequency is 3 MHz when operating within the 4.5V to 5.5V supply voltage range.

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, while other operations function normally.