{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY8C3866PVI-070","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY8C3866PVI-070","canonicalUrl":"https://icboms.com/infineon/CY8C3866PVI-070","factsUrl":"https://icboms.com/api/mcp/products/CY8C3866PVI-070","rawCanonicalId":null},"summary":{"shortDescription":"Infineon PSoC® 3 CY8C38xx, CY8C3866PVI-070, 8-Bit 8051 MCU, 67MHz, 64KB Flash, 8K x 8 RAM, 2K x 8 EEPROM, 1.71V ~ 5.5V, -40°C ~ 85°C, 48-SSOP, Surface Mount.","salesMarkdown":"## 67 MHz 8051 — why the speed matters for the BOM The 67 MHz core speed is the headline difference versus older PSoC 1 parts such as the CY8C29466-24PVXI, which tops out at 24 MHz. That clock advantage directly translates to tighter loop rates for the on-chip ADC and CapSense scanning — the 20-bit ADC can run at a higher oversampling rate without stalling the firmware thread. For a BOM decision, the 67 MHz 8051 means this part can handle a combined sensor read + CAN message + PWM update cycle in the same time window a 24 MHz part would need to drop a task. ## 20-bit ADC and analog front-end — no external converter needed The 16-channel 20-bit delta-sigma ADC is the strongest analog feature on this die. It eliminates the need for a separate precision ADC in applications like weigh-scale front-ends, thermocouple linearisation, or strain-gauge bridges. The four 8-bit DACs cover auxiliary set-point or trim outputs. Combined with the internal oscillator, the chip can run a complete mixed-signal control loop with no external clock or converter IC — a single 48-SSOP package replaces what would otherwise be an MCU plus an ADC plus a DAC plus a CAN transceiver (external transceiver still required for the physical layer). ## Lifecycle and sourcing — active, no LTB pressure The CY8C3866PVI-070 carries an active lifecycle status and is ROHS3 compliant. There is no last-time-buy window or NRND flag on this line. For a BOM freeze or a new-design qualification, this part does not carry the obsolescence risk that older PSoC 1 variants (CY8C29466-24PVXI, CY8C29566-24AXIT) may eventually face.","metaTitle":"CY8C3866PVI-070 PSoC 3 MCU, 8051 67MHz, 64KB Flash, 48-SSOP","metaDescription":"Infineon/Cypress CY8C3866PVI-070 PSoC 3 8-bit MCU: 8051 core at 67MHz, 64KB Flash, 8Kx8 RAM, 2Kx8 EEPROM, 16x20b ADC, 4x8b DAC, CAN/I²C/SPI, -40 to 85°C","metaKeywords":null},"attributes":{"series":"PSOC® 3 CY8C38xx","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Speed":"67MHz","Series":"PSOC® 3 CY8C38xx","Package":"Tube","RAM Size":"8K x 8","Core Size":"8-Bit","EEPROM Size":"2K x 8","Peripherals":"CapSense, DMA, LCD, POR, PWM, WDT","Connectivity":"CANbus, EBI/EMI, I²C, LINbus, SPI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"25","Core Processor":"8051","Package / Case":"48-BSSOP (0.295\\\", 7.50mm Width)","Data Converters":"A/D 16x20b; D/A 4x8b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Program Memory Size":"64KB (64K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"48-SSOP","Voltage - Supply (Vcc/Vdd)":"1.71V ~ 5.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$20.55","stockQuantity":0,"priceTiers":[{"qty":50,"price":"$12.40000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/bce109168f5bfb1a2b6d3f9ab94fe849.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What are the equivalent or replacement parts for CY8C3866PVI-070?","answer":"Within the PSoC family, the CY8C29466-24PVXI (PSoC 1, 24 MHz, 24 I/O) and CY8C4245LQI-483 (PSoC 4, ARM Cortex-M0, 48 MHz) are different architecture tiers. The closest functional peer in the PSoC 3 line is the CY8C3866PVI-070 itself; no direct pin-compatible second source is listed. For a drop-in replacement, verify the firmware and peripheral mapping against the original design."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY8C3866PVI-070","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY8C3866PVI-070 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}}