Microchip Technology 25LC080BT-I/MS

Overview

25LC080BT-I/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, and industrial temperature range (–40°C to +85°C). It operates from 2.5V to 5.5V and features hardware write protection via WP pin and status register, self-timed write cycles (≤5 ms), and 1 million erase/write endurance - used for firmware storage, calibration data retention, and configuration memory in embedded control systems.

For engineers reviewing the 25LC080BT-I/MS datasheet, 25LC080BT-I/MS pinout, 25LC080BT-I/MS application, or 25LC080BT-I/MS equivalent, key selection criteria include VCC operating range (2.5–5.5 V), page size (32 bytes), HOLD functionality for interrupt-safe SPI pausing, block write protection granularity (none/¼/½/all), and MSOP-8 package compatibility with space-constrained PCB layouts.

Technical Context

The 25LC080BT-I/MS implements a standard SPI Mode 0,0/Master-Slave interface with separate SI (data in) and SO (data out) lines, requiring CS, SCK, and HOLD for full protocol support. Its internal architecture includes a page latch buffer, status register with WIP/WEL/BP bits, and high-voltage generator for EEPROM programming.

Write operations require explicit WREN instruction followed by CS high-to-low transition to initiate self-timed internal write cycle; read operations support sequential addressing with automatic address roll-over at 03FFh. Hardware write protection is enabled only when WP = low AND WPEN bit = 1, allowing selective lockdown of upper 1/4, 1/2, or entire memory array.

Key Specifications

Pinout & Package

25LC080BT-I/MS is housed in an 8-lead MSOP (Micro Small Outline Package) with 0.65 mm pitch, 3.00 mm × 4.90 mm body, and exposed pad not present. Pin 1 is marked by a beveled corner or dot; device orientation follows JEDEC standard with pin 1 at top-left when notch faces up.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 25LC080AT-I/MS, the 25LC080BT-I/MS offers larger page writes (32 vs. 16 bytes) for faster bulk updates, while AT25080B-MAU-10 trades HOLD support for higher clock speed - making 25LC080BT-I/MS optimal for interrupt-driven hosts needing deterministic pause/resume behavior.

Availability

25LC080BT-I/MS is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, and smart metering applications requiring stable component supply, long-term data retention, and RoHS-compliant packaging.

Supply support for 25LC080BT-I/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, with global design and manufacturing operations.

The 25LC080BT-I/MS belongs to Microchip's 25XX080A/B family of SPI EEPROMs, designed specifically for reliable, low-power, pin-efficient nonvolatile storage in resource-constrained embedded systems.

FAQ

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

The 25LC080BT-I/MS supports up to 10 MHz SPI 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 3 MHz - though the latter is not applicable since 25LC080BT-I/MS has a 2.5 V minimum VCC rating. This ensures timing compliance across its specified voltage range without external clock dividers.

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

Yes, the 25LC080BT-I/MS supports hardware write protection through the combination of the WP pin and WPEN bit in the status register. When WPEN = 1 and WP = low, writes to the nonvolatile status register bits are disabled. The 25LC080BT-I/MS also supports software-controlled block protection (BP0/BP1) for memory array segments - both mechanisms operate independently to secure critical configuration data.

What package type is used for the 25LC080BT-I/MS?

The 25LC080BT-I/MS uses an 8-lead MSOP (Micro Small Outline Package) with 0.65 mm lead pitch, 3.00 mm × 4.90 mm body dimensions, and surface-mount construction. The "T" suffix in the part number explicitly denotes the MSOP package, and the "I" indicates industrial temperature grade (–40°C to +85°C). This compact footprint is ideal for dense PCB layouts in space-constrained applications.

How many erase/write cycles does the 25LC080BT-I/MS guarantee?

The 25LC080BT-I/MS guarantees 1,000,000 erase/write cycles per memory location, validated under industrial temperature conditions. This endurance rating applies to individual bytes and pages alike, and is maintained across the full VCC range (2.5 V to 5.5 V) and operating temperature range. Field reliability is further enhanced by built-in power-on write protection and write-enable latch discipline.

Can the 25LC080BT-I/MS be used with a 3.3 V microcontroller SPI interface?

Yes, the 25LC080BT-I/MS is fully compatible with 3.3 V microcontroller SPI interfaces. Its VCC range of 2.5 V to 5.5 V includes 3.3 V nominal operation, and its input thresholds (VIH1 = 2.0 V min, VIL1 = 0.8 V max at VCC ≥ 2.7 V) ensure robust logic-level recognition. Output drive strength (VOL = 0.4 V at 2.1 mA) meets standard 3.3 V CMOS loading requirements without level-shifting circuitry.