{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7953-8LL00-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7953-8LL00-0AA0","canonicalUrl":"https://aoctrl.com/siemens/6ES7953-8LL00-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7953-8LL00-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC S7 Micro Memory Card, Flash-EPROM, 2 Mbyte, for S7-300/C7/ET 200S IM151 CPU, 3.3 V NFLASH, 50 g.","salesMarkdown":"The Siemens 6ES7953-8LL00-0AA0 is a SIMATIC S7 Micro Memory Card built around Flash-EPROM technology, providing 2 Mbyte of non-volatile program storage. It is designed for the S7-300, C7, and ET 200S IM151 CPU families, operating at 3.3 V. This is the card you slot into the CPU to hold the user program, configuration data, and any recipe blocks — it is the load memory, not the work memory. ## What the 2 Mbyte rating means for your program 2 Mbyte of Flash-EPROM is the capacity for the compiled PLC program and data blocks. For an S7-300 CPU, this typically accommodates a medium-sized control application — think a packaging line with several hundred I/O points, a few PID loops, and a modest HMI data buffer. If your existing program image is under 1.5 Mbyte, this card gives you headroom. Above that, you are looking at the 4 Mbyte or 8 Mbyte variants in the same form factor.","metaTitle":"Siemens 6ES7953-8LL00-0AA0 S7 Micro Memory Card, 2 Mbyte","metaDescription":"Siemens SIMATIC S7 Micro Memory Card for S7-300/C7/ET 200S CPUs. Flash-EPROM, 2 Mbyte, 3.3 V. Mature lifecycle; sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["PLC Accessories"],"specifications":{"Memory size":"2 Mbyte","Type of memory":"Flash-EPROM","Weight, approx.":"50 g","lifecycle_stage":"mature","Belongs To Product":"S7-300/C7/ET 200S IM151 CPU"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$133.73","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=140602&mlfb=6ES7953-8LL00-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6ES7953-8LL00-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the memory size and type?","answer":"It provides 2 Mbyte of Flash-EPROM storage. Flash-EPROM is non-volatile, meaning the program is retained when power is removed, and it can be electrically erased and reprogrammed in the field."},{"question":"Which CPUs is this memory card compatible with?","answer":"It is designed for the SIMATIC S7-300, C7, and ET 200S IM151 CPU families. These are the standard S7-300 CPUs (e.g., CPU 314, CPU 315-2 DP) and the compact C7 control panels as well as the ET 200S distributed I/O interface modules that accept a memory card."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7953-8LL00-0AA0","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/6ES7953-8LL00-0AA0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}