{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY9AF131KAPMC-G-UNE2","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY9AF131KAPMC-G-UNE2","canonicalUrl":"https://icboms.com/infineon/CY9AF131KAPMC-G-UNE2","factsUrl":"https://icboms.com/api/mcp/products/CY9AF131KAPMC-G-UNE2","rawCanonicalId":null},"summary":{"shortDescription":"Infineon FM3 MB9A130LA series, CY9AF131KAPMC-G-UNE2, 32-bit ARM Cortex-M3 MCU, 20 MHz, 64 KB Flash, 8K x 8 RAM, 6x12-bit ADC, 37 I/O, 1.8V-5.5V, -40°C to 85°C, 48-LQFP (7x7), Tray.","salesMarkdown":"## 20 MHz Cortex-M3 for cost-sensitive control — what this part is and where it fits The Infineon CY9AF131KAPMC-G-UNE2 is a 32-bit ARM Cortex-M3 MCU clocked at 20 MHz with 64 KB of Flash and 8 KB of RAM. The 1.8 V to 5.5 V supply range and -40°C to 85°C rating suit industrial environments. ## 64 KB Flash, 8 KB RAM — sizing the firmware budget 64 KB of program Flash and 8 KB of SRAM fit a single Modbus RTU stack with a PID loop and digital I/O, or a basic sensor-fusion algorithm reading the six 12-bit ADC channels. ## 20 MHz — why the clock matters for your BOM decision The 20 MHz core speed is the single biggest differentiator between this part and the faster FM3 siblings. The CY9BF314RPMC-G-JNE2 runs at 144 MHz and carries 103 I/O plus USB — that part is for throughput-heavy applications like a printer controller or a multi-axis motion coordinator. The CY9AF131KAPMC-G-UNE2 at 20 MHz is the right fit when the loop time is in the hundreds of microseconds, not nanoseconds, and the BOM cost per MCU matters more than raw MIPS. If your firmware already runs on a 20 MHz Cortex-M3, this part drops in without retiming the bus. ## Peripherals and I/O — what's on the chip 37 I/O lines are brought out to the 48-LQFP package, enough for a keypad matrix, a small character LCD, and a few sensor interrupts. On-chip peripherals include LVD (low-voltage detect), POR (power-on reset), PWM outputs, and a watchdog timer — the basics for a reliable embedded controller without external supervisor ICs. Connectivity covers CSIO, I²C, and UART/USART, so it talks to common serial peripherals and industrial sensor modules directly. ## Six 12-bit ADC channels — analog front-end on board The 6-channel 12-bit ADC handles analog inputs like potentiometer feedback, current-sense resistor voltage, or thermistor dividers. No external ADC needed for a basic control loop — the MCU reads the sensor, runs the PID, and drives the PWM output in one chip. For applications requiring more than six analog inputs or higher resolution, an external multiplexer or a different FM3 variant with more ADC channels would be needed. ## Active lifecycle — no LTB clock ticking It's ROHS3 compliant.","metaTitle":"CY9AF131KAPMC-G-UNE2 Infineon FM3 ARM Cortex-M3 MCU, 20 MHz","metaDescription":"Infineon CY9AF131KAPMC-G-UNE2 32-bit ARM Cortex-M3 MCU, 20 MHz, 64 KB Flash, 8 KB RAM, 6x12-bit ADC, -40°C to 85°C, 48-LQFP. Active, RoHS3.","metaKeywords":null},"attributes":{"series":"FM3 MB9A130LA","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Speed":"20MHz","Series":"FM3 MB9A130LA","Package":"Tray","RAM Size":"8K x 8","Core Size":"32-Bit Single-Core","Peripherals":"LVD, POR, PWM, WDT","Connectivity":"CSIO, I²C, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"37","Core Processor":"ARM® Cortex®-M3","Package / Case":"48-LQFP","Data Converters":"A/D 6x12b","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-LQFP (7x7)","Voltage - Supply (Vcc/Vdd)":"1.8V ~ 5.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$8.65","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$8.65000","currency":"USD"},{"qty":10,"price":"$7.81700","currency":"USD"},{"qty":25,"price":"$7.45360","currency":"USD"},{"qty":80,"price":"$6.47213","currency":"USD"},{"qty":250,"price":"$6.18120","currency":"USD"},{"qty":500,"price":"$5.63580","currency":"USD"},{"qty":1000,"price":"$4.90860","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/39075ff45b5846d3016e7f74b5eacb37.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Can CY9AF131KAPMC-G-UNE2 be programmed with standard ARM tools like Keil or IAR?","answer":"Yes. The ARM Cortex-M3 core is supported by Keil MDK, IAR Embedded Workbench, and GCC-based toolchains. No proprietary compiler lock-in."},{"question":"Is CY9AF131KAPMC-G-UNE2 RoHS compliant and lead-free?","answer":"Yes, it is ROHS3 compliant."},{"question":"What are the recommended alternatives to CY9AF131KAPMC-G-UNE2 for a drop-in replacement?","answer":"The CY9BF314RPMC-G-JNE2 is a higher-performance FM3 sibling (144 MHz, 103 I/O, USB) but is not pin-compatible — it comes in a larger package. For a true drop-in within the same FM3 MB9A130LA series, look at other 48-LQFP variants with matching Flash and RAM; the CY9AF131KAPMC-G-UNE2 is the specific 64 KB / 8 KB configuration. No exact pin-compatible second source is listed in the official cross-reference."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY9AF131KAPMC-G-UNE2","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY9AF131KAPMC-G-UNE2 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}}