25LC080BT-E/SN

Overview

The Microchip Technology 25LC080BT-E/SN 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 clock frequencies up to 10 MHz. The device supports a supply voltage range of 2.5V to 5.5V and is housed in an 8-lead TSSOP package. It is rated for automotive temperature ranges from -40°C to +125°C.

Feature Summary

• Supports high-speed SPI communication with a maximum clock frequency of 10 MHz
• Includes programmable block write protection for selective array security
• Features built-in power-on/off data protection and self-timed write cycles
• Provides hardware write protection capability through the dedicated WP pin

Applications

• Automotive electronic control units requiring extended temperature operation
• Industrial systems needing reliable non-volatile data storage
• Embedded devices utilizing SPI interfaces for configuration memory

Procurement Notes

Verify that the specific suffix 'BT' corresponds to the Automotive grade (-E) and TSSOP package (ST). Confirm the datasheet revision matches the required specifications, as older versions may list different package codes or temperature ratings. Ensure the ordering information aligns with the exact part number variant intended for production.

Selection Notes

Select this component when automotive-grade reliability and extended temperature operation are required. The 32-byte page size offers higher throughput compared to 16-byte variants. Ensure the system design accommodates the 2.5V to 5.5V supply range and utilizes the HOLD pin if bus pausing functionality is necessary for interrupt handling.

Part Context

This device belongs to the 25XX080A/B family of 8 Kbit Serial EEPROMs. The 'B' designation indicates a 32-byte page size, distinguishing it from the 'A' version which uses 16 bytes. The 'T' suffix typically denotes the TSSOP package type, while 'E' specifies the automotive temperature rating.

Replacement Considerations

25LC080A-I/ST

FAQ

What is the difference between the 25LC080A and 25LC080B versions?

The primary difference is the page size; the 25LC080A has a 16-byte page size, while the 25LC080B has a 32-byte page size.

How does the HOLD pin function during SPI communication?

The HOLD pin allows the user to pause serial communication without resetting the sequence. When pulled low, inputs are ignored except for Chip Select, allowing the host to service interrupts before resuming.