{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"25C040-I/P","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"25C040-I-P","canonicalUrl":"https://icboms.com/microchip/25C040-I-P","factsUrl":"https://icboms.com/api/mcp/products/25C040-I%2FP","rawCanonicalId":null},"summary":{"shortDescription":"Microchip 25C040-I/P, 4Kbit SPI EEPROM, 512 x 8 organization, 3 MHz clock, 4.5V to 5.5V supply, 8-PDIP through-hole, -40°C to 85°C.","salesMarkdown":"The Microchip 25C040-I/P is a 4 Kbit serial EEPROM organized as 512 x 8 bits, accessed over an SPI bus at up to 3 MHz. The 8-pin PDIP through-hole package suits prototyping boards, socketed memory modules, or retrofit applications where an SMT footprint is impractical. ## 3 MHz SPI clock — bus timing and margin The 3 MHz SPI clock is the ceiling for read and write operations. A page write plus the 5 ms write cycle dominates the transaction time. ## Through-hole PDIP — board integration The 8-DIP (0.300\" row spacing) and 8-PDIP supplier package are the same physical footprint: a 7.62 mm-wide dual-in-line package for through-hole soldering or socket insertion. ## Industrial temperature grade — deployment envelope It is not qualified to AEC-Q100, so it is not the part for under-hood automotive or mission-critical avionics without additional screening. The 85°C upper limit is the standard industrial ceiling; designs that see sustained junction temperatures above that should look at extended-range EEPROMs or derate the operating conditions.","metaTitle":"Microchip 25C040-I/P EEPROM, 4Kbit SPI 3MHz, 8-PDIP","metaDescription":"Microchip 25C040-I/P 4Kbit SPI EEPROM, 3 MHz clock, 4.5V-5.5V supply, 8-PDIP through-hole package. Industrial temp range -40°C to 85°C. Active lifecycle.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Package":"Tube","Technology":"EEPROM","Memory Size":"4Kbit","Memory Type":"Non-Volatile","Memory Format":"EEPROM","Mounting Type":"Through Hole","Package / Case":"8-DIP (0.300\\\", 7.62mm)","Clock Frequency":"3 MHz","lifecycle_stage":"eol_hot","Memory Interface":"SPI","Voltage - Supply":"4.5V ~ 5.5V","Memory Organization":"512 x 8","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"8-PDIP","Write Cycle Time - Word, Page":"5ms"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.82","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.82000","currency":"USD"},{"qty":25,"price":"$0.78440","currency":"USD"},{"qty":100,"price":"$0.75000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/3308cff76fa888c1f3cd83e17d644a98.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is 25C040-I/P compatible with 25LC040?","answer":"The 25C040-I/P and 25LC040 share the same 8-pin PDIP footprint and SPI interface, but the 25LC040 operates at 2.5V while the 25C040 requires 4.5V to 5.5V. They are not drop-in compatible on a 3.3 V bus. On a 5 V bus, the 25LC040 may tolerate the voltage if rated, but the 25C040 is the correct 5 V part."},{"question":"What is the write cycle time of 25C040-I/P?","answer":"The write cycle time is 5 ms per word or page. After initiating a write, the host must wait at least 5 ms before the next operation, or poll the status register for the write-in-progress bit."},{"question":"What package is 25C040-I/P available in?","answer":"The 25C040-I/P is supplied in an 8-DIP (0.300\", 7.62 mm) through-hole package, also designated as 8-PDIP. It ships in Tube form."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/25C040-I-P","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/25C040-I-P when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}