Microchip Technology 25LC080A-I/MS

Overview

25LC080A-I/MS from Microchip Technology Inc. is an 8 Kbit SPI Serial EEPROM with 1024 × 8-bit organization, 16-byte page size, 10 MHz max clock, and industrial temperature range (−40°C to +85°C). It operates from 2.5–5.5 V, supports hardware write protection via WP pin, and delivers 1,000,000 erase/write cycles for embedded firmware storage in microcontroller-based systems.

For engineers reviewing the 25LC080A-I/MS datasheet, 25LC080A-I/MS pinout, 25LC080A-I/MS application, or 25LC080A-I/MS equivalent, key selection criteria include SPI interface compatibility, MSOP-8 package footprint, 16-byte page write constraint, industrial-grade reliability, and integrated block write protection for configuration data integrity.

Technical Context

The 25LC080A-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 control signals. Its internal architecture includes a write-enable latch, status register with WIP/WEL/BP bits, and page latches enabling burst writes within 16-byte boundaries.

It features dual-level write protection: software-controlled BP0/BP1 bits for 0%, 25%, 50%, or 100% array protection, and hardware-enforced protection when WPEN=1 and WP=low. The device enters high-impedance SO state on CS high or HOLD low, supporting multi-device SPI bus sharing.

Key Specifications

Pinout & Package

25LC080A-I/MS is housed in an 8-lead MSOP (Micro Small Outline Package), 3.0 mm × 4.9 mm body, 0.65 mm pitch, RoHS-compliant Pb-free construction.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 25LC080A-I/MS, the 25AA080A-I/MS offers lower-voltage operation without trade-offs in reliability or package, while the AT25080B-MAHL-T trades HOLD functionality for speed-making the 25LC080A-I/MS optimal for interrupt-aware, industrial-temp designs requiring robust pause capability.

Availability

25LC080A-I/MS is available at Aetrix Electronics and suitable for industrial sensor calibration, medical device configuration, automotive body control modules, and consumer appliance parameter storage requiring stable component supply across extended product lifecycles.

Supply support for 25LC080A-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 microcontroller, analog, FPGA, and memory solutions, serving industrial, automotive, communications, and consumer markets with high-reliability silicon and development tools.

The 25LC080A-I/MS belongs to Microchip's 25XX080A/B family of SPI Serial EEPROMs, designed specifically for cost-sensitive, space-constrained embedded systems needing dependable nonvolatile storage with minimal external components and proven field reliability.

FAQ

What is the maximum clock frequency supported by the 25LC080A-I/MS?

The 25LC080A-I/MS supports a maximum SPI clock frequency of 10 MHz when VCC is 4.5–5.5 V. At 2.5–4.5 V, the limit drops to 5 MHz, and at 1.8–2.5 V it is 3 MHz - though the latter is not applicable to this part, as its minimum VCC is 2.5 V. These values are specified in Table 1-2 of the DS21808D datasheet and define real-time throughput for read/write operations.

Does the 25LC080A-I/MS support page write operations, and what is the page size?

Yes, the 25LC080A-I/MS supports page write operations with a fixed 16-byte page size. Up to 16 bytes can be written in a single transaction, provided all addresses fall within the same physical page boundary (e.g., 0x000–0x00F). Crossing a boundary causes wraparound - a critical design constraint verified in Section 2.3 and Figure 2-3 of the datasheet.

How does hardware write protection work on the 25LC080A-I/MS?

Hardware write protection on the 25LC080A-I/MS requires both the WP pin (Pin 3) to be low and the WPEN bit (Status Register Bit 7) to be set to 1. When both conditions are met, writes to the nonvolatile Status Register bits (BP0, BP1, WPEN) are blocked - preserving configuration integrity. This behavior is fully documented in Table 2-4 and Section 2.6 of DS21808D.

What is the endurance and data retention specification for the 25LC080A-I/MS?

The 25LC080A-I/MS guarantees 1,000,000 erase/write cycles and greater than 200 years of data retention at +85°C ambient, as confirmed in Table 1-3 (Note 2) and Section 1.0 of DS21808D. These figures are characterized, not tested per unit, and apply across the full industrial temperature range.

Is the 25LC080A-I/MS pin-compatible with other packages in the 25XX080A/B family?

Yes, the 25LC080A-I/MS in MSOP-8 is pin-compatible with the PDIP, SOIC, and TSSOP variants of the same part number (e.g., 25LC080A-I/P, -I/SN, -I/ST), sharing identical pin functions and electrical behavior. This allows direct PCB footprint substitution without schematic changes, as stated in the "Package Types" section on DS21808D-page 1.