Microchip Technology 25LC080C-E/MS

Overview

25LC080C-E/MS from Microchip Technology Inc. is an 8 Kbit SPI Serial EEPROM with 1024 × 8-bit organization, 16-byte page size, and industrial-automotive temperature support (−40°C to +125°C). It operates from 2.5V to 5.5V, supports up to 10 MHz clock frequency, and delivers 5 mA read/write current at 5.5V - used for nonvolatile configuration storage in automotive control modules, industrial PLCs, and embedded sensor nodes.

For engineers reviewing the 25LC080C-E/MS datasheet, 25LC080C-E/MS pinout, 25LC080C-E/MS application, or 25LC080C-E/MS equivalent, key selection criteria include its MSOP-8 package compatibility, hardware write-protection via WP pin and STATUS register, HOLD functionality for interrupt-safe SPI pauses, and guaranteed >1 million erase/write cycles with >200-year data retention.

Technical Context

The 25LC080C-E/MS implements a standard SPI Mode 0,0 interface with separate SI (data-in) and SO (data-out) lines, requiring CS, SCK, and optional HOLD/WP signals. Its internal architecture includes a 16-byte page latch, status register with WIP/WEL/BP0/BP1 bits, and high-voltage generator for EEPROM programming.

Write operations require explicit WREN instruction followed by WRITE command and address; page writes are bounded to 16-byte physical pages, and crossing boundaries causes wraparound. The device enters low-power standby (5 µA) when CS is high and supports seamless hold/resume during active transfers without sequence restart.

Key Specifications

Pinout & Package

25LC080C-E/MS is housed in an 8-lead MSOP (Mini Small Outline Package), 3.0 mm × 4.4 mm body, 0.65 mm pitch, RoHS-compliant and Pb-free. Pin 1 is marked with a dot or beveled corner; package thickness is 1.00 mm nominal.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 25LC080C-E/MS, the 25LC080D-E/MS offers higher write throughput per cycle but demands stricter page-boundary management, while the AT25080B-MAHL-T reduces cost at the expense of automotive qualification and long-term reliability metrics.

Availability

25LC080C-E/MS is available at Aetrix Electronics and suitable for automotive engine control units, industrial programmable logic controllers, and medical diagnostic sensor nodes requiring stable component supply across extended temperature and lifecycle requirements.

Supply support for 25LC080C-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 microcontroller, analog, and Flash-IP solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.

The 25LC080C-E/MS belongs to Microchip's 25XX080C/D family of SPI Serial EEPROMs, engineered for robust nonvolatile storage in automotive, industrial, and medical systems demanding high endurance and extended temperature operation.

FAQ

What is the maximum clock frequency supported by the 25LC080C-E/MS?

The 25LC080C-E/MS supports up to 10 MHz clock frequency when VCC is 4.5V to 5.5V. At 2.5V ≤ VCC < 4.5V, the maximum clock drops to 5 MHz, and at 1.8V ≤ VCC < 2.5V it is 3 MHz. These limits are defined in Table 1-2 of the DS22151B datasheet and ensure reliable timing margins across voltage and temperature ranges. The 25LC080C-E/MS must be operated within these AC specifications to guarantee correct read/write behavior.

Does the 25LC080C-E/MS support hardware write protection?

Yes, the 25LC080C-E/MS supports hardware write protection via the WP pin in conjunction with the WPEN bit in the STATUS register. When WP is low and WPEN = 1, writes to nonvolatile STATUS register bits are blocked - protecting configuration lock settings. All other functions remain operational. This dual-control mechanism prevents accidental corruption during power cycling or software faults, and is fully documented in Section 2.6 and Table 2-4 of the 25LC080C-E/MS datasheet.

What is the page size of the 25LC080C-E/MS, and why does it matter?

The 25LC080C-E/MS has a fixed 16-byte page size, meaning up to 16 consecutive bytes can be written in a single page write operation - provided they reside within the same physical page boundary (e.g., addresses 0000h–000Fh, 0010h–001Fh, etc.). Crossing a boundary causes wraparound, overwriting earlier bytes in the page. This constraint affects firmware design: applications must align multi-byte writes or implement page-aware buffering. The 25LC080C-E/MS page size is explicitly stated in the Device Selection Table on page 1 of DS22151B.

How does the HOLD function work on the 25LC080C-E/MS?

The HOLD pin on the 25LC080C-E/MS suspends ongoing SPI communication without resetting the internal address pointer or command state. When pulled low while SCK is low, SI/SO/SCK inputs are ignored and SO goes high-impedance. To resume, HOLD must be raised while SCK remains low. This allows host MCUs to service time-critical interrupts and return seamlessly to the same transaction - a capability confirmed in Section 3.6 and Figure 1-1 of the 25LC080C-E/MS datasheet.

What temperature range is guaranteed for the 25LC080C-E/MS?

The 25LC080C-E/MS is specified for the Automotive (E) temperature range of −40°C to +125°C, as confirmed in the Device Selection Table (page 1) and Electrical Characteristics sections of DS22151B. This rating applies to all DC and AC parameters under VCC = 2.5V to 5.5V. The 'E' suffix in the part number explicitly denotes this extended grade, distinguishing it from industrial-only variants like 25LC080C-I/MS (−40°C to +85°C).