{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"COP8ACC728M9-XE","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"COP8ACC728M9-XE","canonicalUrl":"https://icboms.com/texas-instruments/COP8ACC728M9-XE","factsUrl":"https://icboms.com/api/mcp/products/COP8ACC728M9-XE","rawCanonicalId":null},"summary":{"shortDescription":"National Semiconductor COP8™ 8 A series, COP8ACC728M9-XE, 8-Bit COP8 MCU, 4 MHz, 4 KB OTP, 23 I/O, Microwire/Plus (SPI), A/D 6x12b, 2.7 V supply, 0°C to 70°C, 28-SOIC.","salesMarkdown":"## 4 MHz COP8 core — 4 KB OTP, 23 I/O, 6x12-bit ADC The National Semiconductor COP8ACC728M9-XE is an 8-bit microcontroller from the COP8™ 8 A series, built around the COP8 core running at 4 MHz. It carries 4 KB of one-time-programmable (OTP) program memory — firmware is locked at the factory, with no field-update path. On-chip peripherals include 23 general-purpose I/O lines, a 6-channel 12-bit ADC, PWM and watchdog timer, plus a Microwire/Plus (SPI) serial interface. ## OTP memory — no firmware changes after programming The 4 KB OTP program memory means the code image is permanent once the device is programmed. This is a deliberate choice for high-volume, cost-sensitive designs where the application is finalised before production ramp. It also means the BOM line is tied to the original firmware — no software patches, no field upgrades. For development or prototyping, an EPROM or Flash-based sibling in the COP8 family is the practical alternative. ## Commercial temperature range — indoor, controlled environments It is not specified for automotive under-hood, outdoor telecom cabinets, or industrial motor drives where extended-temperature or AEC-Q100 qualification would be required. For an OTP device that has been in the market for many years, active status is a positive signal — no last-time-buy clock is running.","metaTitle":"National Semiconductor COP8ACC728M9-XE 8-bit MCU, 4 MHz, OTP","metaDescription":"COP8ACC728M9-XE 8-bit COP8 MCU, 4 MHz, 4 KB OTP, 23 I/O, 6x12-bit ADC, 2.7 V supply, 0°C to 70°C, 28-SOIC. Active lifecycle.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"series":"COP8™ 8 A","has_mpn":"COP8ACC728","cpu_core":"COP8","frame_size":"8-Bit","fuse_speed":"4 MHz","connectivity":"Microwire/Plus (SPI)","package_type":"Bulk","Number Of I/O":"23","mounting_type":"Surface Mount","product_status":"Active","Data Converters":"A/D 6x12b","Oscillator Type":"External","lifecycle_stage":"eol_hot","peripheral_types":"PWM, WDT","supply_voltage_v":"2.7","Program Memory Type":"OTP","Operating Temperature High":"0°C to 70°C (TA)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.21","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/9e3651bc2a877d78c48ab20d6aaba29b.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/COP8ACC728M9-XE/alternatives.json"},"ai":{"faq":[{"question":"Can COP8ACC728M9-XE be replaced by a flash version?","answer":"The COP8 family includes Flash-based variants that are pin-compatible across the density options, allowing in-system reprogramming. For a direct OTP-to-Flash swap, verify the exact memory size and peripheral set against the target Flash part's datasheet."},{"question":"Is COP8ACC728M9-XE equivalent to COP8ACC728M9 without the -XE suffix?","answer":"The -XE suffix typically denotes a specific packaging or temperature grade variant. Without a cross-reference document, the safest assumption is that the two suffixes are not automatically interchangeable — confirm the full order code against your BOM's approved vendor list."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/COP8ACC728M9-XE","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/COP8ACC728M9-XE when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}