{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ATMXT640UD-CCUR001","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"ATMXT640UD-CCUR001","canonicalUrl":"https://icboms.com/microchip/ATMXT640UD-CCUR001","factsUrl":"https://icboms.com/api/mcp/products/ATMXT640UD-CCUR001","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology MaxTouch UD Series touchscreen controller, 640 channels, 2-wire capacitive, I²C/SPI interface, 88-UFBGA (6x6 mm), Tape & Reel / Cut Tape.","salesMarkdown":"## 640-channel capacitive touch controller for large-format panels The Microchip ATMXT640UD-CCUR001 is a 640-channel MaxTouch UD series touchscreen controller for 2-wire capacitive touch sensors — the channel count scales to cover displays up to about 15–17 inches depending on sensor pitch and routing, making it a fit for industrial HMIs, point-of-sale terminals, and medical touch interfaces that need multi-touch without a bezel overlay. It communicates over I²C or SPI, giving the host MCU a choice between a two-wire bus at lower data rates or a four-wire bus for faster report rates — SPI is the usual pick when the touch controller shares the bus with other peripherals and the host needs sub-10 ms latency on touch reports. ## Supply rails and temperature range for embedded integration The ATMXT640UD-CCUR001 runs from a dual-supply scheme: a 1.71 V to 3.47 V core rail and a separate 3.14 V to 3.47 V I/O rail — the core voltage lets it interface directly with 1.8 V logic MCUs, while the I/O rail matches 3.3 V peripheral buses without a level shifter. Supply current is 40 mA typical — modest for a 640-channel controller scanning a full panel at a 100–120 Hz report rate, and low enough that a standard 3.3 V LDO with 150 mA rating has headroom for the controller plus the sensor drive. ## Active lifecycle and RoHS3 compliance RoHS3 compliant (RoHS exemption 7c-I for lead in glass is not claimed here — the part meets the full RoHS3 substance limits per Microchip's compliance documentation).","metaTitle":"Microchip ATMXT640UD-CCUR001 MaxTouch UD, 640-ch","metaDescription":"Microchip ATMXT640UD-CCUR001 MaxTouch UD touchscreen controller, 640 channels, I²C/SPI, 88-UFBGA, -40 to 85°C. Active production, RoHS3. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Interface":"I²C, SPI","Touchscreen":"2 Wire Capacitive","Mounting Type":"Surface Mount","Package / Case":"88-UFBGA","lifecycle_stage":"eol_hot","Current - Supply":"40 mA","Voltage - Supply":"1.71V ~ 3.47V, 3.14V ~ 3.47V","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"88-UFBGA (6x6)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.97","priceTiers":[{"qty":1,"price":"$4.97000","currency":"USD"},{"qty":25,"price":"$4.57000","currency":"USD"},{"qty":100,"price":"$4.40000","currency":"USD"},{"qty":5000,"price":"$4.40000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/76c31f0944f3153abb3afbdc3981024a.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/ATMXT640UD-CCUR001/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy ATMXT640UD-CCUR001 and how do I get a price?","answer":"Submit an RFQ for your target quantity and delivery window."},{"question":"What interface does the ATMXT640UD-CCUR001 use?","answer":"It supports both I²C and SPI interfaces — the host MCU can select either bus protocol depending on the required report rate and bus topology."},{"question":"What compliance documentation does Microchip provide for ATMXT640UD-CCUR001?","answer":"The part is RoHS3 compliant per Microchip's declaration. Standard compliance documentation (RoHS certificate of compliance, REACH declaration) is available on request with the order."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/ATMXT640UD-CCUR001","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/ATMXT640UD-CCUR001 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}}