25AA080-I/P

Memory IC Overview

The Microchip Technology 25AA080-I/P is an 8 Kbit (1024 x 8-bit) Serial Electrically Erasable PROM featuring a SPI-compatible serial bus interface. It operates within a supply voltage range of 1.8V to 5.5V and supports a maximum clock frequency of 1 MHz in the Industrial temperature range (-40°C to +85°C). The device utilizes low-power CMOS technology with typical standby current of 500 nA and read current of 500 µA. It offers high reliability with 1 million write cycle endurance, data retention exceeding 200 years, and ESD protection greater than 4000V.

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 write enable latch to prevent inadvertent writes.
• Features a dedicated Hold pin to suspend serial communication without resetting the sequence.

Memory IC Applications

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

Memory IC Procurement Notes

Verify the specific suffix 'I' confirms the Industrial temperature range (-40°C to +85°C) and 'P' indicates the 8-lead PDIP package. Confirm that the datasheet DS21230E applies, noting the device is marked as not recommended for new designs; check for updated equivalents like the 25AA080A/B series if required by design standards.

Memory IC Selection Notes

Select this component when a low-cost, through-hole EEPROM with SPI interface is required for industrial environments. Ensure the application does not exceed the 1 MHz clock limit at lower voltages. Consider the page write size of 16 bytes for memory management efficiency. Verify that the 1.8V minimum operating voltage aligns with the system's power rails.

Memory IC Part Context

This part belongs to the 25XX080 family, which includes variants like the 25LC080 and 25C080. These devices share similar functional architectures but differ in voltage ranges and clock speeds. The 25AA080 specifically targets applications requiring operation down to 1.8V, distinguishing it from the 2.5V minimum 25LC080 and 4.5V minimum 25C080.

Memory IC Replacement Considerations

Publicly confirmed substitutes include the 25AA080A-I/P and 25AA080B-I/P. These newer revisions are recommended over the original 25AA080 for new designs due to updated manufacturing processes while maintaining pin compatibility.