25AA080D-I/P

Memory IC Overview

The Microchip Technology 25AA080D-I/P is an 8 Kbit (1024 x 8-bit) Serial Electrically Erasable PROM accessed via a SPI-compatible serial bus. It operates within a supply voltage range of 1.8V to 5.5V and supports industrial temperatures from -40°C to +85°C. The device features a maximum clock frequency of 10 MHz, a 32-byte page size, and a 5 ms max self-timed write cycle. Key electrical characteristics include a standby current of 5 µA at 5.5V and read/write currents up to 5 mA.

Memory IC Feature Summary

• Supports hardware write protection via the WP pin and STATUS register bits for array security
• Includes built-in power-on/off data protection circuitry and a write enable latch
• Allows communication pausing via the HOLD pin without resetting the serial sequence

Memory IC Applications

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

Memory IC Procurement Notes

Verify the specific suffix 'I/P' corresponds to the Industrial temperature grade (-40°C to +85°C) and PDIP-8 package. Confirm the 'D' variant designation indicates the 32-byte page size rather than the 16-byte page found in 'C' versions. Ensure the 1.8V minimum operating voltage requirement aligns with the target system's power rails.

Memory IC Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside standard SPI compatibility. The 32-byte page size offers higher throughput compared to the 16-byte 'C' version variants. Consider the PDIP-8 package only if through-hole mounting is necessary for the mechanical design constraints.

Memory IC Part Context

This part belongs to the 25XX080C/D family of 8K SPI EEPROMs. The 'AA' prefix denotes support for 1.8V operation, while 'LC' variants require a minimum of 2.5V. The 'D' suffix specifically identifies the 32-byte page architecture, distinguishing it from the 16-byte page 'C' series devices.

Memory IC Replacement Considerations

25AA080C-I/P

Memory IC FAQ

How does the HOLD pin function during serial communication?

The HOLD pin suspends transmission to the device mid-sequence without resetting the serial pointer. Transitions on SI, SCK, and SO are ignored while held low, allowing the host to service interrupts before resuming.

What determines the block write protection levels?

Block protection is controlled by the BP1 and BP0 bits in the STATUS register, allowing protection of none, the upper 1/4, the upper 1/2, or all of the memory array.