Microchip Technology 25LC080BT-E/MS

Overview

25LC080BT-E/MS from Microchip Technology Inc. is an 8 Kbit SPI serial EEPROM with 1024 × 8-bit organization, 32-byte page size, 10 MHz max clock frequency, and industrial-temperature operation (–40°C to +85°C) in an 8-lead MSOP package. It serves as nonvolatile configuration storage in microcontroller-based systems requiring reliable, low-power data retention.

For engineers reviewing the 25LC080BT-E/MS datasheet, 25LC080BT-E/MS pinout, 25LC080BT-E/MS application, or 25LC080BT-E/MS equivalent, key selection criteria include VCC range (2.5–5.5 V), write endurance (1,000,000 cycles), data retention (>200 years), hardware write protection via WP pin, and HOLD functionality for interrupt-safe SPI bus arbitration.

Technical Context

The 25LC080BT-E/MS implements a standard SPI Mode 0,0 or 1,1 interface with separate SI and SO lines, CS-controlled device selection, and HOLD-driven pause/resume capability. Its internal architecture includes a write-enable latch, status register with WIP/WEL/BP bits, and page latches supporting up to 32-byte page writes within aligned 32-byte boundaries.

It features self-timed erase/write cycles (5 ms max), block write protection covering none/¼/½/all memory array, and power-on reset of the write-enable latch. The device supports sequential read with automatic address increment and rollover from 03FFh to 0000h, enabling continuous streaming of stored configuration or calibration data.

Key Specifications

Pinout & Package

8-lead MSOP (Micro Small Outline Package), 3.0 mm × 4.9 mm body, 0.65 mm pitch, Pb-free and RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar serial EEPROM applications.

Compared with 25LC080AT-E/MS, the 25LC080BT-E/MS enables faster bulk writes via its 32-byte page; compared with AT25080B-MAHL-T, it lacks AEC-Q100 certification but offers identical electrical performance at lower cost for industrial use.

Availability

25LC080BT-E/MS is available at Aetrix Electronics and suitable for industrial sensor calibration, smart meter parameter storage, and embedded firmware bootloader storage requiring stable component supply across extended product lifecycles.

Supply support for 25LC080BT-E/MS includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Microchip Technology Inc. is a leading provider of microcontrollers, analog components, and memory solutions, headquartered in Chandler, Arizona.

The 25LC080BT-E/MS belongs to Microchip's 25XX080A/B family of SPI serial EEPROMs, designed specifically for robust, low-power nonvolatile data storage in space-constrained industrial and embedded systems.

FAQ

What is the maximum clock frequency supported by the 25LC080BT-E/MS?

The 25LC080BT-E/MS supports up to 10 MHz clock frequency when VCC is 4.5 V to 5.5 V. At 2.5 V ≤ VCC < 4.5 V, the maximum clock drops to 5 MHz, and at 1.8 V ≤ VCC < 2.5 V, it is rated for 3 MHz. These limits ensure reliable setup/hold timing across voltage and temperature ranges specified for the industrial grade.

Does the 25LC080BT-E/MS support hardware write protection?

Yes, the 25LC080BT-E/MS supports hardware write protection through the combination of the WP pin and the WPEN bit in the Status Register. When WPEN = 1 and WP = low, writes to the nonvolatile Status Register bits are disabled. Memory array writes remain enabled unless blocked by block protection bits (BP0/BP1), allowing selective lockdown of critical configuration registers.

How does the HOLD pin function during SPI communication with the 25LC080BT-E/MS?

The HOLD pin on the 25LC080BT-E/MS suspends an ongoing SPI transaction without resetting the internal state. When pulled low while SCK is low, the device tri-states SO, ignores SI/SCK transitions, and retains its position in the command sequence. Resuming requires bringing HOLD high while SCK remains low-enabling deterministic interruption handling in real-time microcontroller systems.

What is the page size of the 25LC080BT-E/MS and why does it matter?

The 25LC080BT-E/MS has a 32-byte page size, meaning up to 32 consecutive bytes can be written in a single page-write command-as long as they reside within the same physical page boundary (addresses 0000h–001Fh, 0020h–003Fh, etc.). Exceeding this boundary causes wraparound, overwriting earlier bytes in the page. Proper software alignment is essential to avoid data corruption during bulk writes.

Is the 25LC080BT-E/MS compatible with standard SPI interfaces?

Yes, the 25LC080BT-E/MS is fully compatible with standard SPI interfaces operating in Mode 0,0 (CPOL = 0, CPHA = 0) or Mode 1,1 (CPOL = 1, CPHA = 1). It uses separate SI (input) and SO (output) lines, supports CS-driven selection, and complies with SPI timing requirements including setup/hold times, clock frequency, and data validity windows as defined in its AC characteristics table.