25AA080B-I/P

Memory IC Overview

The Microchip Technology 25AA080B-I/P is an 8 Kbit (1024 x 8-bit) Serial Electrically Erasable PROM. It features a 32-byte page size and operates via a standard SPI-compatible serial bus with SCK, SI, SO, and CS signals. The device supports a maximum clock frequency of 10 MHz and functions within a supply voltage range of 1.8 V to 5.5 V. It utilizes low-power CMOS technology and includes self-timed erase and write cycles. The component is housed in an 8-lead PDIP package and is designed for industrial temperature ranges.

Memory IC Feature Summary

• Supports block write protection allowing selective array segment locking
• Includes built-in power-on/off data protection circuitry
• Features a hold pin to pause serial communication without resetting the sequence

Memory IC Applications

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

Memory IC Procurement Notes

Verify the specific suffix 'I' confirms the Industrial temperature rating (-40°C to +85°C). Confirm the 'P' designation matches the required 8-lead PDIP through-hole package. Ensure the 'B' version is selected for the 32-byte page size rather than the 16-byte 'A' version. Cross-reference the datasheet revision to confirm current manufacturing status.

Memory IC Selection Notes

Select this part when a 32-byte page size is required for efficient sequential writes. Choose the PDIP package if through-hole mounting is necessary for the application. Verify that the 1.8 V minimum operating voltage meets the lowest system rail requirements. Consider the 10 MHz maximum clock speed against the host microcontroller's SPI capabilities.

Memory IC Part Context

This component belongs to the 25XX080A/B family of 8 Kbit Serial EEPROMs from Microchip Technology. The family shares identical functional architectures but varies by voltage range ('AA' vs 'LC'), page size ('A' vs 'B'), and physical packaging options. The 25AA080B variant specifically targets applications requiring operation down to 1.8 V.

Memory IC Replacement Considerations

25AA080A-I/P

Memory IC FAQ

How does the HOLD pin function during serial communication?

The HOLD pin allows the user to pause transmission to the device mid-sequence without resetting the serial pointer. Transitions on other pins are ignored while held low.

What determines the write protection level of the array?

Write protection levels are determined by the BP1 and BP0 bits in the Status Register, which can be configured to protect none, one-quarter, one-half, or all of the memory array.