{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY9BF122KQN-G-AVE2","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY9BF122KQN-G-AVE2","canonicalUrl":"https://icboms.com/infineon/CY9BF122KQN-G-AVE2","factsUrl":"https://icboms.com/api/mcp/products/CY9BF122KQN-G-AVE2","rawCanonicalId":null},"summary":{"shortDescription":"Infineon Technologies FM3 MB9B120M series, ARM Cortex-M3 32-bit MCU, 72 MHz, 160 KB Flash, 16K x 8 RAM, 48-VFQFN Exposed Pad, Tray.","salesMarkdown":"## 72 MHz Cortex-M3 with 160 KB flash in a 48-QFN The CY9BF122KQN-G-AVE2 is an Infineon FM3 MB9B120M series microcontroller built around a 32-bit ARM Cortex-M3 core running at 72 MHz, with 160 KB of on-chip flash and 16K x 8 bytes of SRAM. The 72 MHz clock ceiling is set by the core architecture, not the flash wait-state profile — the Cortex-M3 pipeline and single-cycle multiply-accumulate give it enough throughput for motor-control loops and sensor-fusion algorithms that would stall a Cortex-M0 at the same frequency. Packaged in a 48-VFQFN with an exposed pad (7x7 mm), it routes 35 I/O pins and the power/ground ring to a single ground paddle that pulls heat into the PCB copper pour — the thermal pad is the primary heat path, not the package body. ## Peripheral set and connectivity for sensor-heavy designs On the analog side it carries a 14-channel 12-bit ADC and a 2-channel 10-bit DAC — the ADC scans through the multiplexer at up to 1 Msps, so a single conversion sequence can sample three phase currents and a DC-bus voltage in under 5 µs. For serial interfaces it supports CSIO, I²C, LINbus, and UART/USART — the LIN controller is useful for automotive body-node communication, while the I²C and UART ports handle sensor bridges and debug consoles without an external USB-UART bridge. The DMA controller offloads peripheral-to-memory transfers from the Cortex-M3 core — a UART receive stream or ADC conversion sequence runs in the background while the CPU executes the control loop, keeping the effective throughput closer to the 72 MHz ceiling. ## Active lifecycle and sourcing posture The part is RoHS3 compliant and supplied in tray packaging — the 48-QFN footprint is standard across the FM3 MB9B120M family, so a single PCB layout serves multiple flash and RAM variants if the BOM needs to flex.","metaTitle":"Infineon CY9BF122KQN-G-AVE2 MCU, ARM Cortex-M3, 72MHz","metaDescription":"Infineon CY9BF122KQN-G-AVE2 ARM Cortex-M3 MCU, 72MHz, 160KB flash, 16Kx8 RAM, 48-QFN, -40 to 105°C. Active production, RoHS3. Request a quote.","metaKeywords":null},"attributes":{"series":"FM3 MB9B120M","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Speed":"72MHz","Series":"FM3 MB9B120M","Package":"Tray","RAM Size":"16K x 8","Core Size":"32-Bit Single-Core","Peripherals":"DMA, LVD, POR, PWM, WDT","Connectivity":"CSIO, I²C, LINbus, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"35","Core Processor":"ARM® Cortex®-M3","Package / Case":"48-VFQFN Exposed Pad","Data Converters":"A/D 14x12b; D/A 2x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Program Memory Size":"160KB (160K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 105°C (TA)","Supplier Device Package":"48-QFN (7x7)","Voltage - Supply (Vcc/Vdd)":"2.7V ~ 5.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.39","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$6.39000","currency":"USD"},{"qty":10,"price":"$5.77600","currency":"USD"},{"qty":25,"price":"$5.50760","currency":"USD"},{"qty":80,"price":"$4.78213","currency":"USD"},{"qty":260,"price":"$4.56723","currency":"USD"},{"qty":520,"price":"$4.16423","currency":"USD"},{"qty":1040,"price":"$3.62691","currency":"USD"},{"qty":2600,"price":"$3.49258","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/0e1618d80f735886b1613b0dba50c751.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest functional alternative to CY9BF122KQN-G-AVE2?","answer":"The CY9BF314RPMC-G-JNE2 is a higher-end sibling in the FM3 family — it runs a Cortex-M3 at 144 MHz with 103 I/O, USB, and an external bus interface, but it comes in a different package (LQFP) with a different pinout, so a board spin is required."},{"question":"What compliance documentation does Infineon provide for CY9BF122KQN-G-AVE2?","answer":"Infineon certifies the CY9BF122KQN-G-AVE2 as RoHS3 compliant — the standard compliance package includes the RoHS declaration, REACH SVHC statement, and the material declaration datasheet."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY9BF122KQN-G-AVE2","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY9BF122KQN-G-AVE2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:45:10.375Z","lastPublished":"2026-07-22T19:45:10.375Z","indexable":true}}