Microchip Technology 25LC080C-I/P

Overview

25LC080C-I/P from Microchip Technology is an 8 Kbit SPI Serial EEPROM with 1024 × 8-bit organization, 16-byte page size, and industrial temperature range (–40°C to +85°C). It operates from 2.5V to 5.5V, supports up to 10 MHz clock frequency, and features hardware write protection via WP pin and STATUS register control. It is used for nonvolatile parameter storage in microcontroller-based embedded systems requiring reliable, low-power data retention.

For engineers reviewing the 25LC080C-I/P datasheet, 25LC080C-I/P pinout, 25LC080C-I/P application, or 25LC080C-I/P equivalent, key selection criteria include SPI interface compatibility, 16-byte page write capability, industrial-grade temperature operation, VCC range (2.5–5.5V), and hardware/software write-protection flexibility.

Technical Context

The 25LC080C-I/P implements a standard SPI Mode 0,0 (CPOL = 0, CPHA = 0) interface with separate SI (data in) and SO (data out) lines, CS-controlled selection, and HOLD pin for transaction suspension. Its internal architecture includes a 1024-byte EEPROM array, page latches, HV generator for programming, and status register with WIP, WEL, BP0/BP1, and WPEN bits.

Write operations require explicit WREN instruction before WRITE, and CS must go high after final data bit to initiate self-timed internal write cycle (≤5 ms). Block protection allows selective write-disable of 0%, 25%, 50%, or 100% of memory via BP0/BP1 bits, while WP pin enables hardware-level lock when WPEN = 1 and WP = low.

Key Specifications

Pinout & Package

25LC080C-I/P is housed in an 8-lead PDIP (Plastic Dual In-Line Package) with 300-mil body width, RoHS-compliant matte tin lead finish, and through-hole mounting. Pin 1 is marked by notch or dot; package meets JEDEC MS-001 standard.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 25AA080C-I/P, the 25LC080C-I/P trades 1.8V operation for tighter VCC min (2.5V) but maintains identical pinout and feature set; versus AT25080B-SSHL-T, it lacks AEC-Q100 qualification but adds HOLD pin for deterministic bus arbitration in real-time systems.

Availability

25LC080C-I/P is available at Aetrix Electronics and suitable for industrial sensor nodes, medical device calibration storage, and automotive body control modules requiring stable component supply, long-term data integrity, and SPI-compatible nonvolatile memory.

Supply support for 25LC080C-I/P 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 25LC080C-I/P belongs to Microchip's serial EEPROM product line, designed specifically for robust, low-power, SPI-based nonvolatile data storage in cost-sensitive embedded systems across industrial, medical, and consumer applications.

FAQ

What is the maximum clock frequency supported by the 25LC080C-I/P?

The 25LC080C-I/P supports up to 10 MHz clock frequency when VCC is 4.5V to 5.5V. At lower supply voltages (2.5V ≤ VCC < 4.5V), the maximum clock drops to 5 MHz. This voltage-dependent specification ensures reliable timing margins across its full operating range. The 25LC080C-I/P datasheet defines these limits in Table 1-2 under FCLK parameter.

Does the 25LC080C-I/P have built-in write protection, and how is it configured?

Yes, the 25LC080C-I/P includes dual-layer write protection: hardware-based via the WP pin (when WPEN bit is set) and software-based via BP0/BP1 bits in the STATUS register. The WP pin disables writes to nonvolatile STATUS bits when pulled low and WPEN = 1; BP0/BP1 allow selective locking of 0%, 25%, 50%, or 100% of memory. Configuration is done using WRSR instruction per DS22151B Section 2.6.

What package type is used for the 25LC080C-I/P, and what are its key mechanical features?

The 25LC080C-I/P uses an 8-lead PDIP (Plastic Dual In-Line Package) with 300-mil body width, through-hole leads, and RoHS-compliant matte tin finish. Key dimensions include 0.100" pitch, 0.365" nominal length, and 0.130" molded thickness. Pin 1 is identified by a notch or dot per Microchip drawing C04-018B.

How does the HOLD pin function on the 25LC080C-I/P, and when should it be used?

The HOLD pin on the 25LC080C-I/P suspends ongoing SPI communication without resetting the internal state, allowing the host MCU to service higher-priority interrupts. It must be asserted while SCK is low and released under the same condition to resume. This feature is essential in real-time systems where deterministic bus arbitration is required, such as motor control or safety-critical diagnostics.

What is the page size of the 25LC080C-I/P, and why does it matter for write operations?

The 25LC080C-I/P has a 16-byte page size, meaning up to 16 consecutive bytes can be written in a single page-write command. Crossing a page boundary causes wraparound instead of automatic advancement, so firmware must validate address alignment before initiating multi-byte writes. This constraint directly impacts write efficiency and error handling in data-logging applications.